WoRMS taxon details
Cardium Linnaeus, 1758
137734 (urn:lsid:marinespecies.org:taxname:137734)
accepted
Genus
Cardium costatum Linnaeus, 1758 (type by subsequent designation)
Cardium (Cardium) Linnaeus, 1758 · unaccepted > superseded rank
Cardium (Tropidocardium) Römer, 1868 · unaccepted > junior objective synonym
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- Species Cardium agdschakendense Bobkova, 1956 †
- Species Cardium austeni d'Archiac & Haime, 1854 †
- Species Cardium bivirgatum Wanner & Hahn, 1935 †
- Species Cardium brongniarti d'Archiac, 1854 †
- Species Cardium bunburyi d'Archiac & Haime, 1854 †
- Species Cardium costatum Linnaeus, 1758
- Species Cardium deplanatum O. Boettger, 1875 †
- Species Cardium dimidiatum Bobkova, 1956 † (accepted > unreplaced junior homonym, junior homonym of Cardium dimidiatum Goldfuss, 1841)
- Species Cardium eduliforme O. Boettger, 1875 †
- Species Cardium egregium Yokoyama, 1926 †
- Species Cardium gulistanense Bobkova, 1956 †
- Species Cardium halaense d'Archiac & Haime, 1854 †
- Species Cardium hoernesianum M. Hörnes, 1861 †
- Species Cardium horneri d'Archiac & Haime, 1854 †
- Species Cardium jacquemonti d'Archiac & Haime, 1854 †
- Species Cardium lamaeforme d'Archiac & Haime, 1854 †
- Species Cardium martini O. Boettger, 1880 †
- Species Cardium maxicostatum ter Poorten, 2007
- Species Cardium parvulum K. Martin, 1879 † (accepted > unreplaced junior homonym)
- Species Cardium perobliquum K. Martin, 1883 †
- Species Cardium picteti d'Archiac & Haime, 1854 †
- Species Cardium salteri d'Archiac & Haime, 1854 †
- Species Cardium sharpei d'Archiac & Haime, 1854 †
- Species Cardium subalternatum H. M. Jenkins, 1864 †
- Species Cardium subfragile O. Boettger, 1875 †
- Species Cardium taurinum Michelotti, 1870 †
- Species Cardium tokunagai Yokoyama, 1922 †
- Species Cardium tokyoensis Tokunaga, 1906 †
- Species Cardium transcaucasicum Bobkova, 1949 †
- Species Cardium verbeeki K. Martin, 1879 †
- Subgenus Cardium (Acanthocardia) J. E. Gray, 1851 accepted as Acanthocardia J. E. Gray, 1851 (unaccepted > superseded rank)
- Species Cardium (Acanthocardia) barrandei Mayer-Eymar, 1900 † accepted as Acanthocardia turonica (Mayer, 1861) † (unaccepted > junior subjective synonym)
- Subspecies Cardium (Acanthocardia) barrandei schafferi Kautsky, 1925 † accepted as Acanthocardia turonica (Mayer, 1861) † (unaccepted > junior subjective synonym)
- Species Cardium (Acanthocardia) cancellatum Nomura, 1933 † accepted as Frigidocardium nomurai (Kuroda & T. Habe, 1951) † (invalid: junior homonym of Cardium cancellatum Gmelin, 1791; C. nomurai is a replacement name)
- Species Cardium (Acanthocardia) centumpanium Andrusov, 1911 † accepted as Acanthocardia centumpania (Andrusov, 1911) †
- Species Cardium (Acanthocardia) cheribonense Oostingh, 1935 † accepted as Vepricardium cheribonense (Oostingh, 1935) † (unaccepted > superseded combination)
- Species Cardium (Acanthocardia) denticostulatum Beets, 1941 † accepted as Acanthocardia denticostulata (Beets, 1941) †
- Species Cardium (Acanthocardia) exochum Melvill, 1907 accepted as Afrocardium exochum (Melvill, 1907) (unaccepted > superseded combination)
- Species Cardium (Acanthocardia) impar Zhizhchenko, 1936 † accepted as Acanthocardia centumpania (Andrusov, 1911) † (unaccepted > junior subjective synonym)
- Species Cardium (Acanthocardia) omanense Melvill, 1907 accepted as Papillicardium omanense (Melvill, 1907) (unaccepted > superseded combination)
- Species Cardium (Acanthocardia) praechinatum Hilber, 1882 † accepted as Acanthocardia praechinata (Hilber, 1882) †
- Species Cardium (Acanthocardia) serrula L. R. Cox, 1927 † accepted as Cardium burnupi G. B. Sowerby III, 1897 (unaccepted > junior subjective synonym)
- Species Cardium (Acanthocardia) vidali Cossmann & Peyrot, 1912 † accepted as Acanthocardia vidali (Cossmann & Peyrot, 1912) † (unaccepted > superseded rank)
- Subspecies Cardium (Acanthocardia) vidali ritzingense Sieber, 1956 † accepted as Acanthocardia ritzingense (Sieber, 1956) † (unaccepted > superseded rank)
- Species Cardium (Acanthocardia) barrandei Mayer-Eymar, 1900 † accepted as Acanthocardia turonica (Mayer, 1861) † (unaccepted > junior subjective synonym)
- Subgenus Cardium (Acanthocardium) Römer, 1868 accepted as Acanthocardia J. E. Gray, 1851 (unaccepted > junior objective synonym)
- Species Cardium (Acanthocardium) echinatum Linnaeus, 1758 accepted as Acanthocardia echinata (Linnaeus, 1758) (unaccepted > superseded combination)
- Subspecies Cardium (Acanthocardium) echinatum adriaticum Coen, 1941 accepted as Acanthocardia echinata (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Species Cardium (Acanthocardium) mucronatum Poli, 1791 accepted as Acanthocardia echinata (Linnaeus, 1758)
- Subspecies Cardium (Acanthocardium) mucronatum hirtissimum Coen, 1941 accepted as Acanthocardia echinata (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Subspecies Cardium (Acanthocardium) mucronatum submuticum Coen, 1941 accepted as Acanthocardia echinata (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Species Cardium (Acanthocardium) novum Coen, 1941 accepted as Acanthocardia echinata (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Species Cardium (Acanthocardium) echinatum Linnaeus, 1758 accepted as Acanthocardia echinata (Linnaeus, 1758) (unaccepted > superseded combination)
- Subgenus Cardium (Adacna) Eichwald, 1838 accepted as Adacna Eichwald, 1838 (unaccepted > superseded rank)
- Species Cardium (Adacna) boeckhi Halaváts, 1882 † accepted as Lymnocardium boeckhi (Halaváts, 1882) † (unaccepted > superseded combination)
- Species Cardium (Adacna) hofmanni Halaváts, 1882 † accepted as Lymnocardium hofmanni (Halaváts, 1882) † (unaccepted > superseded combination)
- Species Cardium (Adacna) pseudosuessi Halaváts, 1886 † accepted as Lymnocardium carnuntinum (M. Hörnes, 1861) † (unaccepted > junior subjective synonym)
- Species Cardium (Adacna) purocostatum Halaváts, 1886 † accepted as Lymnocardium purocostatum (Halaváts, 1886) † (unaccepted > superseded combination)
- Species Cardium (Adacna) rothi Halaváts, 1886 † accepted as Lymnocardium rothi (Halaváts, 1886) † (unaccepted > superseded combination)
- Species Cardium (Adacna) semseyi Halaváts, 1892 † accepted as Lymnocardium (Budmania) cristagalli (L. Róth, 1878) † (unaccepted > junior subjective synonym)
- Species Cardium (Adacna) tegulatum Halaváts, 1886 † accepted as Lymnocardium tegulatum (Halaváts, 1886) † (unaccepted > superseded combination)
- Species Cardium (Adacna) triangulatocostatum Halaváts, 1882 † accepted as Lymnocardium triangulatocostatum (Halaváts, 1882) † (unaccepted > superseded combination)
- Species Cardium (Adacna) winkleri Halaváts, 1882 † accepted as Lymnocardium winkleri (Halaváts, 1882) † (unaccepted > superseded combination)
- Subgenus Cardium (Americardia) R. B. Stewart, 1930 accepted as Americardia R. B. Stewart, 1930 (unaccepted > superseded rank)
- Species Cardium (Americardia) stewarti Olsson, 1932 † (uncertain > unassessed)
- Subgenus Cardium (Amphicardium) E. von Martens, 1880 accepted as Lyrocardium Meek, 1876 (unaccepted > junior objective synonym)
- Subgenus Cardium (Archicardium) F. Sandberger, 1863 accepted as Acanthocardia J. E. Gray, 1851 (unaccepted > junior subjective synonym)
- Subgenus Cardium (Avicardium) V. P. Kolesnikov, 1950 † accepted as Avicardium V. P. Kolesnikov, 1950 † (unaccepted > superseded rank)
- Species Cardium (Avicardium) latschinjani K. A. Ali-Zade, 1954 † accepted as Miricardium dahestanicum (Uspenskaja, 1931) † (tentative junior subjective synonym)
- Species Cardium (Avicardium) transcaspicum (Andrusov, 1902) † accepted as Avicula transcaspica Andrusov, 1902 †
- Species Cardium (Avicardium) trigonale K. A. Ali-Zade, 1954 † accepted as Aktschagylocardium aligerum (Uspenskaja, 1931) † (unaccepted > junior subjective synonym)
- Species Cardium (Avicardium) uspenskaiae V. P. Kolesnikov, 1950 † accepted as Aktschagylocardium uspenskaiae (V. P. Kolesnikov, 1950) † (unaccepted > superseded combination)
- Subgenus Cardium (Bucardium) J. E. Gray, 1853 accepted as Bucardium J. E. Gray, 1853 (unaccepted > superseded rank)
- Species Cardium (Bucardium) bazini Deshayes, 1858 † accepted as Bucardium bazini (Deshayes, 1858) † (unaccepted > superseded combination)
- Species Cardium (Bucardium) subfragile A. d'Orbigny, 1850 † accepted as Bucardium subfragile (A. d'Orbigny, 1850) † (unaccepted > superseded combination)
- Subgenus Cardium (Cardium) Linnaeus, 1758 accepted as Cardium Linnaeus, 1758 (unaccepted > superseded rank)
- Subgenus Cardium (Cerastoderma) Poli, 1795 accepted as Cerastoderma Poli, 1795 (unaccepted > superseded rank)
- Species Cardium (Cerastoderma) acerbum V. P. Kolesnikov, 1929 † accepted as Obsoletiformes acerbus (V. P. Kolesnikov, 1929) †
- Species Cardium (Cerastoderma) agheilensis Kaltenbach, 1949 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Species Cardium (Cerastoderma) arcaeforme O. Boettger, 1880 † accepted as Cerastoderma arcaeforme (O. Boettger, 1880) † (superseded combination)
- Species Cardium (Cerastoderma) bajarunasi V. P. Kolesnikov, 1929 † accepted as Obsoletiformes bajarunasi (V. P. Kolesnikov, 1929) †
- Subspecies Cardium (Cerastoderma) bajarunasi bajarunasi V. P. Kolesnikov, 1929 † accepted as Obsoletiformes bajarunasi bajarunasi (V. P. Kolesnikov, 1929) †
- Subspecies Cardium (Cerastoderma) bajarunasi urupensis V. P. Kolesnikov, 1929 † accepted as Obsoletiformes bajarunasi urupensis (V. P. Kolesnikov, 1929) †
- Species Cardium (Cerastoderma) bengasiensis Kaltenbach, 1943 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Subspecies Cardium (Cerastoderma) bengasiensis antiqua Kaltenbach, 1949 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Subspecies Cardium (Cerastoderma) bengasiensis berkaensis Kaltenbach, 1949 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Subspecies Cardium (Cerastoderma) bengasiensis hatzi Kaltenbach, 1949 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Species Cardium (Cerastoderma) boinitzense Kojumdgieva, 1969 † accepted as Replidacna boinitzensis (Kojumdgieva, 1969) † (unaccepted > superseded combination)
- Species Cardium (Cerastoderma) chersonense Nosovskiy, 1962 † accepted as Cerastoderma chersonense (Nosovskiy, 1962) † (unaccepted > superseded combination)
- Species Cardium (Cerastoderma) chipolanum Dall, 1900 † accepted as Dinocardium chipolanum (Dall, 1900) † (unaccepted > superseded combination)
- Species Cardium (Cerastoderma) concameratum Hölzl, 1957 † accepted as Cerastoderma concameratum (Hölzl, 1957) † (unaccepted > superseded combination)
- Species Cardium (Cerastoderma) desperatum (V. P. Kolesnikov, 1929) † accepted as Obsoletiformes desperatus (V. P. Kolesnikov, 1929) †
- Species Cardium (Cerastoderma) doengingki Sinzov, 1876 † accepted as Planacardium dongingii (Sinzov, 1876) † (unaccepted > superseded combination)
- Species Cardium (Cerastoderma) edule Linnaeus, 1758 accepted as Cerastoderma edule (Linnaeus, 1758) (unaccepted > superseded combination)
- Variety Cardium (Cerastoderma) edule var. mercatoria Coen, 1915 accepted as Cerastoderma edule (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Species Cardium (Cerastoderma) fittoni A. d'Orbigny, 1845 † accepted as Plicatiformes fittoni (A. d'Orbigny, 1845) †
- Species Cardium (Cerastoderma) fortelamellatum Hölzl, 1958 † accepted as Acanthocardia fortelamellata (Hölzl, 1958) † (unaccepted > superseded combination)
- Species Cardium (Cerastoderma) fucanum Dall, 1907 accepted as Keenocardium blandum (A. Gould, 1850) (unaccepted > junior subjective synonym)
- Species Cardium (Cerastoderma) gatuevi V. P. Kolesnikov, 1929 † accepted as Obsoletiformes gatuevi (V. P. Kolesnikov, 1929) †
- Subspecies Cardium (Cerastoderma) gatuevi gatuevi V. P. Kolesnikov, 1929 † accepted as Obsoletiformes gatuevi gatuevi (V. P. Kolesnikov, 1929) †
- Subspecies Cardium (Cerastoderma) gatuevi pseudomichailovi (V. P. Kolesnikov, 1929) † accepted as Obsoletiformes gatuevi pseudomichailovi (V. P. Kolesnikov, 1929) †
- Species Cardium (Cerastoderma) gleichenbergense A. Papp, 1954 † accepted as Replidacna nigra (Zhizhchenko, 1934) † (unaccepted > junior subjective synonym)
- Species Cardium (Cerastoderma) helmerseni Il'ina, 1960 † accepted as Cerastoderma prigorovskii (Bogachev, 1958) † (unaccepted > junior subjective synonym)
- Species Cardium (Cerastoderma) inflatum Sinzov, 1875 † accepted as Aviculocardium inflatum (Sinzov, 1875) †
- Species Cardium (Cerastoderma) ingratum V. P. Kolesnikov, 1929 † accepted as Obsoletiformes obsoletus ingratus (V. P. Kolesnikov, 1929) †
- Species Cardium (Cerastoderma) iranjanense Fischer-Piette, 1977 accepted as Fragum erugatum (Tate, 1889) (unaccepted > junior subjective synonym)
- Species Cardium (Cerastoderma) kishinevense (V. P. Kolesnikov, 1929) † accepted as Obsoletiformes kishinevensis (V. P. Kolesnikov, 1929) †
- Species Cardium (Cerastoderma) kolesnikovi Davitashvili, 1932 † accepted as Obsoletiforma beaumontiana ("A. d'Orbigny, 1844") † (unaccepted > junior subjective synonym)
- Subspecies Cardium (Cerastoderma) kolesnikovi kavarnense Kojumdgieva, 1969 † accepted as Obsoletiformes obsoletus kavarnensis (Kojumdgieva, 1969) † (unaccepted > superseded combination)
- Species Cardium (Cerastoderma) kujoricum Kojumdgieva, 1969 † accepted as Plicatiformes praeplicatus (Hilber, 1882) † (unaccepted > junior subjective synonym)
- Species Cardium (Cerastoderma) laevigatoloweni (V. P. Kolesnikov, 1929) † accepted as Kubanocardium laevigatoloweni (V. P. Kolesnikov, 1929) †
- Subspecies Cardium (Cerastoderma) laevigatoloweni laevigatoloweni V. P. Kolesnikov, 1929 † accepted as Kubanocardium laevigatoloweni (V. P. Kolesnikov, 1929) † (unaccepted > superseded rank)
- Subspecies Cardium (Cerastoderma) laevigatoloweni sartasense Nevesskaja, 1955 † accepted as Kubanocardium sartasense (Nevesskaja, 1955) †
- Species Cardium (Cerastoderma) lamarckii Reeve, 1845 accepted as Cerastoderma glaucum (Bruguière, 1789)
- Variety Cardium (Cerastoderma) lamarckii var. glaucacrassa Coen, 1915 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Variety Cardium (Cerastoderma) lamarckii var. syrthica Coen, 1915 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Species Cardium (Cerastoderma) lavrani Fischer-Piette, 1977 accepted as Cardium turtoni G. B. Sowerby III, 1894 (unaccepted > junior subjective synonym)
- Species Cardium (Cerastoderma) levinae Merklin, 1960 † accepted as Cerastoderma prigorovskii (Bogachev, 1958) † (unaccepted > junior subjective synonym)
- Species Cardium (Cerastoderma) lithopodolicum (Du Bois de Montpéreux, 1831) † accepted as Obsoletiformes lithopodolicus (Du Bois de Montpéreux, 1831) †
- Species Cardium (Cerastoderma) loweni Sinzov, 1875 † accepted as Kubanocardium loweni (Sinzov, 1875) †
- Subspecies Cardium (Cerastoderma) loweni squamata V. P. Kolesnikov, 1929 † accepted as Kubanocardium loweni (Sinzov, 1875) † (unaccepted > junior subjective synonym)
- Species Cardium (Cerastoderma) michailowi Toula, 1892 † accepted as Obsoletiformes michailowii (Toula, 1892) †
- Species Cardium (Cerastoderma) nefandum V. P. Kolesnikov, 1935 † accepted as Obsoletiformes nefanda (V. P. Kolesnikov, 1935) †
- Species Cardium (Cerastoderma) obsoletiformes V. P. Kolesnikov, 1929 † accepted as Obsoletiformes obsoletiformis (V. P. Kolesnikov, 1929) †
- Species Cardium (Cerastoderma) obsoletum Eichwald, 1830 † accepted as Obsoletiformes obsoletus (Eichwald, 1830) †
- Subspecies Cardium (Cerastoderma) obsoletum ghergutai Jekelius, 1944 † accepted as Obsoletiformes ghergutai (Jekelius, 1944) † (unaccepted > superseded rank)
- Subspecies Cardium (Cerastoderma) obsoletum ringeiseni Jekelius, 1944 † accepted as Obsoletiformes obsoletus ringeiseni (Jekelius, 1944) †
- Subspecies Cardium (Cerastoderma) obsoletum vindobonense Laskarev, 1903 † accepted as Obsoletiformes vindobonensis (Laskarev, 1903) †
- Species Cardium (Cerastoderma) plicatum Eichwald, 1830 † accepted as Plicatiformes plicatus (Eichwald, 1830) †
- Species Cardium (Cerastoderma) praefischerianum V. P. Kolesnikov, 1929 † accepted as Obsoletiformes praefischerianus (V. P. Kolesnikov, 1929) †
- Species Cardium (Cerastoderma) prigorovskii Bogachev, 1958 † accepted as Cerastoderma prigorovskii (Bogachev, 1958) † (unaccepted > superseded combination)
- Species Cardium (Cerastoderma) pseudosemiculcatum Andrusov, 1902 † accepted as Obsoletiformes pseudosemisulcatus (Andrusov, 1902) †
- Species Cardium (Cerastoderma) quadripartitum (V. P. Kolesnikov, 1929) † accepted as Obsoletiformes quadripartitus (V. P. Kolesnikov, 1929) †
- Subspecies Cardium (Cerastoderma) quadripartitum protractiformis V. P. Kolesnikov, 1929 † accepted as Kubanocardium loweni protractiforme (V. P. Kolesnikov, 1929) †
- Subspecies Cardium (Cerastoderma) quadripartitum quadripartitum V. P. Kolesnikov, 1929 † accepted as Obsoletiformes quadripartitus (V. P. Kolesnikov, 1929) †
- Species Cardium (Cerastoderma) rectidens Coen, 1915 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Species Cardium (Cerastoderma) sarmaticum (V. P. Kolesnikov, 1931) † accepted as Obsoletiformes sarmaticus (V. P. Kolesnikov, 1929) †
- Species Cardium (Cerastoderma) serogosicum Nosovskiy, 1962 † accepted as Cerastoderma serogosicum (Nosovskiy, 1962) † (unaccepted > superseded combination)
- Species Cardium (Cerastoderma) tzankovi Kojumdgieva, 1969 † accepted as Plicatiformes tzankovi (Kojumdgieva, 1969) † (unaccepted > superseded combination)
- Species Cardium (Cerastoderma) laqueatum Conrad, 1838 † represented as Cerastoderma laqueatum (Conrad, 1838) †
- Subspecies Cardium (Cerastoderma) laqueatum blountense Mansfield, 1932 † represented as Cerastoderma laqueatum blountense (Mansfield, 1932) †
- Subspecies Cardium (Cerastoderma) laqueatum laqueatum Conrad, 1838 † represented as Cerastoderma laqueatum laqueatum (Conrad, 1838) †
- Species Cardium (Cerastoderma) virginianum Conrad, 1839 † represented as Cerastoderma virginianum (Conrad, 1839) †
- Species Cardium (Cerastoderma) kokkupicum Andrusov, 1917 † (uncertain > taxon inquirendum)
- Species Cardium (Cerastoderma) ventricosum Hölzl, 1953 † (uncertain > taxon inquirendum)
- Subgenus Cardium (Clinocardium) Keen, 1936 accepted as Clinocardium Keen, 1936 (unaccepted > superseded rank)
- Species Cardium (Clinocardium) pseudofastosum Nomura, 1937 † accepted as Clinocardium pseudofastosum (Nomura, 1937) † (unaccepted > superseded rank)
- Subgenus Cardium (Corculum) Röding, 1798 accepted as Corculum Röding, 1798 (unaccepted > superseded rank)
- Species Cardium (Corculum) humanum Römer, 1869 accepted as Cardium cardissa Linnaeus, 1758 (unaccepted > junior homonym, non Cardium humanum Linnaeus, 1758)
- Subgenus Cardium (Ctenocardia) H. Adams & A. Adams, 1857 accepted as Ctenocardia H. Adams & A. Adams, 1857 (unaccepted > superseded rank)
- Species Cardium (Ctenocardia) translatum Prashad, 1932 accepted as Cardium robillardi G. B. Sowerby III, 1894 (unaccepted > junior subjective synonym, replacement name for Cardium rigidum Reeve, 1845, non W. Wood, 1815)
- Species Cardium (Ctenocardia) victor Angas, 1872 accepted as Freneixicardia victor (Angas, 1872) (unaccepted > superseded combination)
- Variety Cardium (Ctenocardia) victor var. pulcherrima Melvill, 1909 accepted as Freneixicardia victor (Angas, 1872) (unaccepted > junior subjective synonym)
- Subgenus Cardium (Didacna) Eichwald, 1838 accepted as Didacna Eichwald, 1838 (unaccepted > superseded rank)
- Species Cardium (Didacna) fuchsi Philippson, 1890 † accepted as Didacna fuchsi (Philippson, 1890) † (unaccepted > superseded combination)
- Species Cardium (Didacna) otiophorum (Brusina, 1884) † accepted as Pontalmyra otiophora (Brusina, 1884) † (unaccepted > superseded combination)
- Variety Cardium (Didacna) otiophorum var. orientalis Stevanović, 1951 † accepted as Pontalmyra otiophora orientalis (Stevanović, 1951) † (superseded rank and combination)
- Species Cardium (Didacna) plesiochorum Davitashvili, 1930 † accepted as Pontalmyra plesiochora (Davitashvili, 1930) † (unaccepted > superseded combination)
- Species Cardium (Didacna) dynamis Shvets, 1912 † (uncertain > taxon inquirendum)
- Subgenus Cardium (Dinocardium) Dall, 1900 accepted as Dinocardium Dall, 1900 (unaccepted > superseded rank)
- Species Cardium (Dinocardium) ecuadorialis Olsson, 1932 † accepted as Dinocardium ecuadoriale (Olsson, 1932) † (unaccepted > superseded rank)
- Subgenus Cardium (Discors) Deshayes, 1858 † accepted as Discors Deshayes, 1858 (unaccepted > superseded rank)
- Species Cardium (Discors) discrepans Basterot, 1825 † accepted as Divaricardium discrepans (Basterot, 1825) † (unaccepted > superseded combination)
- Species Cardium (Discors) gloriosus Kuroda, 1928 accepted as Lyrocardium aurantiacum (A. Adams & Reeve, 1850) (unaccepted > junior subjective synonym)
- Species Cardium (Discors) kelirensis K. Martin, 1917 † accepted as Divaricardium kelirense (K. Martin, 1917) † (unaccepted > superseded combination)
- Subgenus Cardium (Divaricardium) Dollfus & Dautzenberg, 1886 † accepted as Divaricardium Dollfus & Dautzenberg, 1886 † (unaccepted > superseded rank)
- Species Cardium (Divaricardium) discrepans Basterot, 1825 † accepted as Discors discrepans (Basterot, 1825) †
- Variety Cardium (Divaricardium) discrepans var. herculea Dollfus, Cotter & J. P. Gomes, 1904 † accepted as Discors herculeus (Dollfus, Cotter & J. P. Gomes, 1904) † (unaccepted > superseded rank)
- Species Cardium (Divaricardium) discrepans Basterot, 1825 † accepted as Discors discrepans (Basterot, 1825) †
- Subgenus Cardium (Divergicardium) Dunker, 1882 accepted as Lyrocardium Meek, 1876 (unaccepted > junior objective synonym)
- Subgenus Cardium (Eoprosodacna) Davitashvili, 1934 † accepted as Eoprosodacna Davitashvili, 1934 † (unaccepted > superseded rank)
- Species Cardium (Eoprosodacna) goriense Davitashvili, 1934 † accepted as Eoprosodacna goriensis (Davitashvili, 1934) † (unaccepted > superseded combination)
- Species Cardium (Eoprosodacna) kartlicum Davitashvili, 1934 † accepted as Eoprosodacna (Eoprosodacna) kartlica (Davitashvili, 1934) † (unaccepted > superseded combination)
- Subgenus Cardium (Ethmocardium) C. A. White, 1880 † accepted as Ethmocardium C. A. White, 1880 † (unaccepted > superseded rank)
- Subgenus Cardium (Eucardium) P. Fischer, 1887 accepted as Acanthocardia J. E. Gray, 1851 (unaccepted > junior objective synonym)
- Subgenus Cardium (Fragum) Röding, 1798 accepted as Fragum Röding, 1798 (unaccepted > superseded rank)
- Species Cardium (Fragum) alfuricum P. J. Fischer, 1921 † accepted as Fragum alfuricum (P. J. Fischer, 1921) † (unaccepted > superseded combination)
- Species Cardium (Fragum) centumliratum Melvill, 1907 accepted as Frigidocardium centumliratum (Melvill, 1907) (unaccepted > superseded combination)
- Species Cardium (Fragum) crenelloides Melvill, 1909 accepted as Cardium crenelloides Melvill, 1909 (unaccepted > junior subjective synonym)
- Species Cardium (Fragum) dolichum Suter, 1917 † accepted as Procardia dolicha (Suter, 1917) † (superseded combination)
- Species Cardium (Fragum) elattocostatum Woodring, 1925 † accepted as Cardium guppyi Thiele, 1910 (unaccepted > junior subjective synonym)
- Species Cardium (Fragum) eos Kuroda, 1929 accepted as Frigidocardium eos (Kuroda, 1929) (unaccepted > superseded combination)
- Species Cardium (Fragum) javanum Wanner & Hahn, 1935 † accepted as Fragum javanum (Wanner & Hahn, 1935) † (unaccepted > superseded combination)
- Species Cardium (Fragum) maorinum Suter, 1917 † accepted as Procardia dolicha (Suter, 1917) † (junior subjective synonym)
- Species Cardium (Fragum) medium Linnaeus, 1758 accepted as Americardia media (Linnaeus, 1758) (unaccepted > superseded combination)
- Species Cardium (Fragum) priscum Suter, 1917 † accepted as Hedecardium brunneri (Hector, 1886) † (junior subjective synonym)
- Species Cardium (Fragum) roseolum Melvill, 1909 accepted as Afrocardium richardi (Audouin, 1826) (unaccepted > junior subjective synonym)
- Species Cardium (Fragum) rubescens E. A. Smith, 1911 accepted as Afrocardium richardi (Audouin, 1826) (unaccepted > junior subjective synonym)
- Species Cardium (Fragum) simillimum E. A. Smith, 1896 accepted as Microcardium simillimum (E. A. Smith, 1896) (unaccepted > superseded combination)
- Species Cardium (Fragum) torresi E. A. Smith, 1885 accepted as Frigidocardium torresi (E. A. Smith, 1885) (unaccepted > superseded combination)
- Species Cardium (Fragum) haitense G. B. Sowerby I, 1850 † represented as Cardium haitense G. B. Sowerby I, 1850 †
- Subgenus Cardium (Fulvia) J. E. Gray, 1853 accepted as Fulvia J. E. Gray, 1853 (unaccepted > superseded rank)
- Species Cardium (Fulvia) peramabilis Dall, 1881 accepted as Microcardium peramabile (Dall, 1881) (unaccepted > superseded combination)
- Variety Cardium (Fulvia) peramabilis var. tinctum Dall, 1881 accepted as Microcardium tinctum (Dall, 1881) (unaccepted > superseded combination)
- Species Cardium (Fulvia) peramabilis Dall, 1881 accepted as Microcardium peramabile (Dall, 1881) (unaccepted > superseded combination)
- Subgenus Cardium (Glans) Megerle von Mühlfeld, 1811 accepted as Glans Megerle von Mühlfeld, 1811 (unaccepted > superseded rank)
- Species Cardium (Glans) kaiparaensis P. Marshall, 1918 † accepted as Glyptoactis subintermedia (Suter, 1917) † (junior subjective synonym)
- Subgenus Cardium (Hemidiscors) Rovereto, 1898 † accepted as Discors Deshayes, 1858 (unaccepted > junior subjective synonym)
- Species Cardium (Hemidiscors) rugiferum Rovereto, 1898 † (uncertain > taxon inquirendum)
- Subgenus Cardium (Inaequicostata) Paramonova, 1971 † accepted as Replidacna Jekelius, 1944 † (unaccepted > junior subjective synonym)
- Species Cardium (Inaequicostata) vasoevitshi V. P. Kolesnikov, 1929 † accepted as Obsoletiformes pseudofischerianus vasoevitshi (V. P. Kolesnikov, 1929) † (unaccepted > superseded combination)
- Species Cardium (Inaequicostata) wiesenense A. Papp, 1954 † accepted as Replidacna wiesenensis (A. Papp, 1954) † (unaccepted > superseded combination)
- Subgenus Cardium (Incacardium) Olsson, 1944 † accepted as Incacardium Olsson, 1944 † (unaccepted > superseded rank)
- Species Cardium (Incacardium) mellisum Olsson, 1944 † accepted as Incacardium mellisum (Olsson, 1944) † (unaccepted > superseded combination)
- Subgenus Cardium (Kathocardia) H. I. Tucker & D. Wilson, 1932 † accepted as Cardium (Trachycardium) Mörch, 1853 (unaccepted > junior subjective synonym)
- Species Cardium (Kathocardia) aclinensis H. I. Tucker & D. Wilson, 1932 † accepted as Trachycardium aclinense (H. I. Tucker & D. Wilson, 1932) † (unaccepted > superseded combination)
- Subgenus Cardium (Kubanocardium) Muskhelishvili, 1965 † accepted as Kubanocardium Muskhelishvili, 1965 † (unaccepted > superseded rank)
- Subgenus Cardium (Laevicardium) Swainson, 1840 accepted as Laevicardium Swainson, 1840 (unaccepted > superseded rank)
- Species Cardium (Laevicardium) auberti Abrard, 1947 † accepted as Nemocardium auberti (Abrard, 1947) † (unaccepted > superseded combination)
- Species Cardium (Laevicardium) automolos K. Martin, 1917 † accepted as Laevicardium automolos (K. Martin, 1917) † (unaccepted > superseded combination)
- Species Cardium (Laevicardium) clarionense Hertlein & A. M. Strong, 1947 accepted as Laevicardium clarionense (Hertlein & A. M. Strong, 1947) (unaccepted > superseded rank)
- Species Cardium (Laevicardium) glabratum Römer, 1869 accepted as Cardium pristis Bory de Saint-Vincent, 1827 (unaccepted > junior subjective synonym)
- Species Cardium (Laevicardium) jobanicum Yokoyama, 1924 † accepted as Leukoma jobanica (Yokoyama, 1924) † (unaccepted > superseded combination)
- Species Cardium (Laevicardium) mansfieldi Abrard, 1947 † accepted as Acrosterigma mansfieldi (Abrard, 1947) † (unaccepted > superseded combination)
- Species Cardium (Laevicardium) norvegicum Spengler, 1799 accepted as Laevicardium crassum (Gmelin, 1791)
- Variety Cardium (Laevicardium) norvegicum var. senegalensis Dautzenberg, 1891 accepted as Laevicardium senegalense (Dautzenberg, 1891) (unaccepted > superseded combination)
- Species Cardium (Laevicardium) serratum Linnaeus, 1758 accepted as Laevicardium serratum (Linnaeus, 1758) (unaccepted > superseded combination)
- Variety Cardium (Laevicardium) serratum var. multilineatum Dall & C. T. Simpson, 1901 accepted as Laevicardium pristis (Bory de Saint-Vincent, 1827) (unaccepted > junior subjective synonym, Replacement name for Cardium lineatum Krebs, 1864, non Gmelin, 1791)
- Species Cardium (Laevicardium) squalidum Yokoyama, 1924 † accepted as Serripes squalidum (Yokoyama, 1924) † (unaccepted > superseded combination)
- Species Cardium (Laevicardium) tristiculum Yokoyama, 1924 † accepted as Nemocardium tristiculum (Yokoyama, 1924) † (unaccepted > superseded combination)
- Species Cardium (Laevicardium) loxotenes O. Boettger, 1883 † (uncertain > taxon inquirendum)
- Species Cardium (Laevicardium) venustum Gabb, 1873 † (uncertain > unassessed)
- Subgenus Cardium (Limnocardium) [sic] † accepted as Lymnocardium Stoliczka, 1870 † (unaccepted > misspelling - incorrect subsequent spelling)
- Species Cardium (Limnocardium) latisulcum Münster, 1837 † accepted as Plicatiformes latisulcus (Münster, 1837) † (unaccepted > superseded combination)
- Species Cardium (Limnocardium) plicatolitorale Sinzov, 1897 † accepted as Pseudoprosodacna littoralis plicatolitoralis (Sinzov, 1897) † (superseded rank and combination)
- Species Cardium (Limnocardium) subpapyraceum Sinzov, 1897 † (uncertain > taxon inquirendum)
- Subgenus Cardium (Lophocardium) P. Fischer, 1887 accepted as Lophocardium P. Fischer, 1887 (unaccepted > superseded rank)
- Species Cardium (Lophocardium) annettae Dall, 1889 accepted as Lophocardium annettae (Dall, 1889) (unaccepted > superseded combination)
- Subgenus Cardium (Loxocardium) Cossmann, 1886 † accepted as Loxocardium Cossmann, 1886 † (unaccepted > superseded rank, original rank)
- Species Cardium (Loxocardium) djunggranganense K. Martin, 1917 † accepted as Loxocardium djunggranganense (K. Martin, 1917) † (unaccepted > superseded combination)
- Species Cardium (Loxocardium) karikalense Cossmann, 1924 † accepted as Cardium virgo Reeve, 1845 (unaccepted > junior subjective synonym)
- Subgenus Cardium (Monodacna) Eichwald, 1838 accepted as Monodacna Eichwald, 1838 (unaccepted > superseded rank)
- Species Cardium (Monodacna) falunica Shvets, 1912 † accepted as Monodacna falunica (Shvets, 1912) † (unaccepted > superseded combination)
- Species Cardium (Monodacna) jammense Hilber, 1891 † accepted as Plicatiformes latisulcus jammensis (Hilber, 1891) † (unaccepted > superseded combination)
- Subgenus Cardium (Nemocardium) Meek, 1876 accepted as Nemocardium Meek, 1876 (unaccepted > superseded rank)
- Species Cardium (Nemocardium) jogjacartense K. Martin, 1917 † accepted as Pseudofulvia jogjacartense (K. Martin, 1917) † (unaccepted > superseded combination)
- Species Cardium (Nemocardium) samarangae Makiyama, 1934 accepted as Keenaea samarangae (Makiyama, 1934) (unaccepted > superseded combination)
- Species Cardium (Nemocardium) toriii Nomura, 1933 † accepted as Nemocardium toriii (Nomura, 1933) † (unaccepted > superseded combination)
- Subgenus Cardium (Obsoletiforma) Paramonova, 1971 † accepted as Obsoletiformes Kojumdgieva, 1969 † (unaccepted > unjustified emendation)
- Subgenus Cardium (Obsoletiformes) Kojumdgieva, 1969 † accepted as Obsoletiformes Kojumdgieva, 1969 † (unaccepted > superseded rank)
- Subgenus Cardium (Orthocardium) Tremlett, 1950 † accepted as Orthocardium Tremlett, 1950 † (unaccepted > superseded rank)
- Species Cardium (Orthocardium) bouryi Cossmann, 1886 † accepted as Orthocardium bouryi (Cossmann, 1886) † (unaccepted > superseded combination)
- Species Cardium (Orthocardium) gratum (Defrance, 1829) † accepted as Orthocardium gratum (Defrance, 1829) † (unaccepted > superseded combination)
- Species Cardium (Orthocardium) hybridum Deshayes, 1829 † accepted as Orthocardium hybridum (Deshayes, 1829) † (unaccepted > superseded combination)
- Species Cardium (Orthocardium) moloti Staadt, 1913 † accepted as Orthocardium moloti (Staadt, 1913) † (unaccepted > superseded combination)
- Species Cardium (Orthocardium) morleti de Raincourt, 1870 † accepted as Orthocardium morleti (de Raincourt, 1870) † (unaccepted > superseded combination)
- Species Cardium (Orthocardium) munieri (Chavan, 1941) † accepted as Orthocardium munieri (Chavan, 1941) † (unaccepted > superseded combination)
- Species Cardium (Orthocardium) porulosum (Solander, 1766) † accepted as Orthocardium porulosum (Solander, 1766) † (unaccepted > superseded combination)
- Species Cardium (Orthocardium) stilpnaulax Cossmann, 1886 † accepted as Orthocardium stilpnaulax (Cossmann, 1886) † (unaccepted > superseded combination)
- Species Cardium (Orthocardium) trifidum Deshayes, 1858 † accepted as Orthocardium trifidum (Deshayes, 1858) † (unaccepted > superseded combination)
- Subgenus Cardium (Papillicardium) Sacco, 1899 accepted as Papillicardium Sacco, 1899 (unaccepted > superseded rank)
- Species Cardium (Papillicardium) papillosum Poli, 1791 accepted as Papillicardium papillosum (Poli, 1791) (unaccepted > superseded rank)
- Species Cardium (Papillicardium) praehispidiforme Bagdasarian, 1970 † accepted as Parvicardium praehispidiforme (Bagdasarian, 1970) † (unaccepted > superseded combination)
- Species Cardium (Papillicardium) sakharaulense Bagdasarian, 1970 † accepted as Parvicardium sakharaulense (Bagdasarian, 1970) † (unaccepted > superseded combination)
- Subgenus Cardium (Papyridea) Swainson, 1840 accepted as Papyridea Swainson, 1840 (unaccepted > superseded rank)
- Species Cardium (Papyridea) bulbosum Dall, 1900 † accepted as Papyridea bulbosa (Dall, 1900) †
- Species Cardium (Papyridea) crockeri A. M. Strong & Hertlein, 1937 accepted as Papyridea crockeri (A. M. Strong & Hertlein, 1937) (unaccepted > superseded combination, original combination)
- Species Cardium (Papyridea) hungerfordi G. B. Sowerby III, 1901 accepted as Fulvia (Laevifulvia) hungerfordi (G. B. Sowerby III, 1901) (unaccepted > superseded combination)
- Species Cardium (Papyridea) semisulcatum J. E. Gray, 1825 accepted as Papyridea semisulcata (J. E. Gray, 1825) (unaccepted > superseded rank)
- Species Cardium (Papyridea) spinosum (Meuschen, 1787) accepted as Papyridea lata (Born, 1778) (unaccepted > junior subjective synonym)
- Variety Cardium (Papyridea) spinosum var. turtoni Dall, 1900 † accepted as Papyridea soleniformis (Bruguière, 1789) (unaccepted > junior homonym, non Cardium turtoni G. B. Sowerby III, 1894)
- Subgenus Cardium (Paradacna) Andrusov, 1909 † accepted as Paradacna Andrusov, 1909 † (unaccepted > superseded rank)
- Subgenus Cardium (Parvicardium) Monterosato, 1884 accepted as Parvicardium Monterosato, 1884 (unaccepted > superseded rank, original rank)
- Species Cardium (Parvicardium) fragulinum Cossmann, 1896 † accepted as Parvicardium fragulinum (Cossmann, 1896) † (unaccepted > superseded rank)
- Species Cardium (Parvicardium) liverovskayae Merklin, 1950 † accepted as Parvicardium liverovskayae (Merklin, 1950) †
- Species Cardium (Parvicardium) minimum (R. A. Philippi, 1836) accepted as Papillicardium minimum (R. A. Philippi, 1836)
- Species Cardium (Parvicardium) papillosum Poli, 1791 † accepted as Papillicardium papillosum (Poli, 1791) (unaccepted > superseded combination)
- Species Cardium (Parvicardium) straeleni Glibert, 1945 † accepted as Parvicardium straeleni (Glibert, 1945) † (unaccepted > superseded combination)
- Species Cardium (Parvicardium) subhispidum Hilber, 1882 † accepted as Parvicardium subhispidum (Hilber, 1882) †
- Subgenus Cardium (Phyllicardium) [sic!] † accepted as Phyllocardium P. Fischer, 1887 † (unaccepted > misspelling - incorrect subsequent spelling)
- Species Cardium (Phyllicardium) dongingi Sinzov, 1876 † accepted as Planacardium dongingii (Sinzov, 1876) † (unaccepted > superseded combination)
- Subgenus Cardium (Plagiocardium) Cossmann, 1886 † accepted as Plagiocardium Cossmann, 1886 † (unaccepted > superseded rank, original rank)
- Species Cardium (Plagiocardium) hirsutum Bronn, 1831 † accepted as Afrocardium hirsutum (Bronn, 1831) †
- Species Cardium (Plagiocardium) plagiomorphum Cossmann, 1886 † accepted as Parvicardium plagiomorphum (Cossmann, 1886) † (unaccepted > superseded combination)
- Subgenus Cardium (Protocardia) Beyrich, 1845 † accepted as Protocardia Beyrich, 1845 † (unaccepted > superseded rank)
- Species Cardium (Protocardia) hornesi Deshayes, 1858 † accepted as Nemocardium hornesi (Deshayes, 1858) † (unaccepted > superseded combination)
- Species Cardium (Protocardia) appressum Gabb, 1877 † (uncertain > unassessed)
- Species Cardium (Protocardia) judaicum Hamlin, 1884 † (uncertain > unassessed)
- Species Cardium (Protocardia) linteum Conrad, 1860 † (uncertain > unassessed)
- Subgenus Cardium (Protocardium) Geinitz, 1874 † accepted as Protocardia Beyrich, 1845 † (unjustified emendation)
- Species Cardium (Protocardium) antisemigranulatum McCoy, 1877 † accepted as Pratulum antisemigranulatum (McCoy, 1877) † (unaccepted > superseded combination)
- Subgenus Cardium (Pseudocardita) Oppenheim, 1919 † accepted as Didacna Eichwald, 1838 (unaccepted > junior subjective synonym)
- Species Cardium (Pseudocardita) laodicaeense Oppenheim, 1919 † accepted as Didacna laodicaeensis (Oppenheim, 1919) † (unaccepted > superseded combination)
- Species Cardium (Pseudocardita) phrygicum Oppenheim, 1919 † accepted as Didacna phrygica (Oppenheim, 1919) † (unaccepted > superseded combination)
- Species Cardium (Pseudocardita) bukowskii Oppenheim, 1919 † (uncertain > taxon inquirendum)
- Species Cardium (Pseudocardita) chamaeforme Oppenheim, 1919 † (uncertain > taxon inquirendum)
- Species Cardium (Pseudocardita) denisluense Oppenheim, 1919 † (uncertain > taxon inquirendum)
- Species Cardium (Pseudocardita) philippsoni Oppenheim, 1919 † (uncertain > taxon inquirendum)
- Subgenus Cardium (Psilodon) Cobălcescu, 1883 † accepted as Prosodacna Tournouër, 1882 † (junior homonym of Psilodon Perty, 1830 [Coleoptera]; junior synonym)
- Subgenus Cardium (Replidacna) Jekelius, 1944 † accepted as Replidacna Jekelius, 1944 † (unaccepted > superseded rank)
- Species Cardium (Replidacna) azerbaidjanicum (A. A. Ali-Zade & Rybina, 1969) † accepted as Obsoletiformes obsoletus (Eichwald, 1830) † (unaccepted > junior subjective synonym)
- Species Cardium (Replidacna) krambergeri Sauerzopf, 1952 † accepted as Lymnocardium krambergeri (Sauerzopf, 1952) † (unaccepted > superseded combination)
- Species Cardium (Replidacna) nevesskajae A. A. Ali-Zade & Rybina, 1974 † accepted as Plicatiformes fittoni (A. d'Orbigny, 1845) † (unaccepted > junior subjective synonym)
- Species Cardium (Replidacna) partitum A. A. Ali-Zade & Ribina, 1974 † accepted as Replidacna partita (A. A. Ali-Zade & Ribina, 1974) † (unaccepted > superseded combination)
- Species Cardium (Replidacna) plancarinata A. Papp, 1954 † accepted as Replidacna plancarinata (A. Papp, 1954) † (unaccepted > superseded combination)
- Species Cardium (Replidacna) raricostatum A. A. Ali-Zade & Rybina, 1974 † accepted as Plicatiformes fittoni (A. d'Orbigny, 1845) † (unaccepted > junior subjective synonym)
- Species Cardium (Replidacna) speciosum A. A. Ali-Zade & Rybina, 1974 † accepted as Replidacna suessi (Barbot de Marny, 1869) † (unaccepted > junior subjective synonym)
- Species Cardium (Replidacna) tumidum A. A. Ali-Zade & Rybina, 1974 † accepted as Obsoletiformes pseudofischerianus vasoevitshi (V. P. Kolesnikov, 1929) † (unaccepted > junior subjective synonym)
- Subgenus Cardium (Ringicardium) P. Fischer, 1887 accepted as Bucardium J. E. Gray, 1853 (unaccepted > junior objective synonym)
- Species Cardium (Ringicardium) kunstleri Cossmann & Peyrot, 1912 † accepted as Procardium kunstleri (Cossmann & Peyrot, 1912) † (unaccepted > superseded combination)
- Species Cardium (Ringicardium) mansitii Otsuka, 1937 accepted as Maoricardium setosum (Redfield, 1846) (unaccepted > junior subjective synonym)
- Subgenus Cardium (Rudicardium) Coen, 1915 † accepted as Acanthocardia J. E. Gray, 1851 (unaccepted > junior subjective synonym)
- Species Cardium (Rudicardium) grande Hölzl, 1958 † accepted as Acanthocardia grandis (Hölzl, 1958) †
- Subgenus Cardium (Serripes) A. Gould, 1841 accepted as Serripes A. Gould, 1841 (unaccepted > superseded rank)
- Species Cardium (Serripes) adamsi Tryon, 1872 accepted as Keenaea samarangae (Makiyama, 1934) (unaccepted > junior homonym, non Cardium adamsii Reeve in A. Adams & Reeve, 1850)
- Species Cardium (Serripes) notabile G. B. Sowerby III, 1915 accepted as Serripes (Yagudinella) notabilis (G. B. Sowerby III, 1915) (unaccepted > superseded combination, original combination)
- Species Cardium (Serripes) bulla Gabb, 1873 † (uncertain > unassessed)
- Subgenus Cardium (Trachycardium) Mörch, 1853 accepted as Trachycardium Mörch, 1853 (unaccepted > superseded rank)
- Species Cardium (Trachycardium) beauforti Prashad, 1932 accepted as Acrosterigma impolitum (G. B. Sowerby II, 1834) (unaccepted > junior subjective synonym)
- Species Cardium (Trachycardium) bowdenense Dall, 1900 † accepted as Dallocardia bowdenensis (Dall, 1900) † (unaccepted > superseded combination)
- Species Cardium (Trachycardium) cantuariense Laws, 1933 † accepted as Hedecardium cantuariense (Laws, 1933) † (superseded combination)
- Species Cardium (Trachycardium) claibornensis Aldrich, 1911 † accepted as Agnocardia claibornensis (Aldrich, 1911) † (unaccepted > superseded combination)
- Species Cardium (Trachycardium) consors G. B. Sowerby I, 1833 accepted as Trachycardium consors (G. B. Sowerby I, 1833) (unaccepted > superseded rank)
- Variety Cardium (Trachycardium) consors var. laxum Dall, 1901 accepted as Trachycardium consors (G. B. Sowerby I, 1833) (unaccepted > junior subjective synonym)
- Species Cardium (Trachycardium) dianthinum Melvill & Standen, 1899 accepted as Acrosterigma dianthinum (Melvill & Standen, 1899) (unaccepted > superseded combination, basionym)
- Species Cardium (Trachycardium) emmonsi Conrad, 1867 † accepted as Trachycardium emmonsi (Conrad, 1867) † (unaccepted > superseded combination)
- Species Cardium (Trachycardium) evergladeensis Mansfield, 1931 † accepted as Trachycardium evergladeense (Mansfield, 1931) † (unaccepted > superseded combination)
- Species Cardium (Trachycardium) hornelli Tomlin, 1928 accepted as Acrosterigma pristipleura (Dall, 1901) (unnecessary replacement name for C. maculatum G.B. Sowerby II, 1840)
- Species Cardium (Trachycardium) hulshofi Pannekoek, 1936 † accepted as Freneixicardia victor (Angas, 1872) (unaccepted > junior subjective synonym)
- Species Cardium (Trachycardium) infantule Nomura & Zinbo, 1934 † accepted as Afrocardium exochum (Melvill, 1907) (unaccepted > junior subjective synonym)
- Species Cardium (Trachycardium) isocardia Linnaeus, 1758 accepted as Trachycardium isocardia (Linnaeus, 1758) (unaccepted > superseded rank)
- Species Cardium (Trachycardium) kenyanum L. R. Cox, 1930 † accepted as Vasticardium kenyanum (L. R. Cox, 1930) † (unaccepted > superseded combination)
- Species Cardium (Trachycardium) laddi Abrard, 1947 † accepted as Cardium (Trachycardium) sewelli Prashad, 1932 (unaccepted > junior subjective synonym)
- Species Cardium (Trachycardium) lingualeonis Guppy, 1866 † accepted as Phlogocardia lingualeonis (Guppy, 1866) † (unaccepted > superseded combination)
- Species Cardium (Trachycardium) moloti Staadt, 1913 † accepted as Orthocardium moloti (Staadt, 1913) † (unaccepted > superseded combination)
- Species Cardium (Trachycardium) muricatum Linnaeus, 1758 accepted as Dallocardia muricata (Linnaeus, 1758) (unaccepted > superseded combination)
- Species Cardium (Trachycardium) perstriatum Kuroda, 1928 accepted as Cardium (Trachycardium) transcendens Melvill & Standen, 1899 (unaccepted > junior subjective synonym)
- Species Cardium (Trachycardium) polycolpatum Cossmann & Peyrot, 1912 † accepted as Europicardium polycolpatum (Cossmann & Peyrot, 1912) † (unaccepted > superseded combination)
- Species Cardium (Trachycardium) pristipleura Dall, 1901 accepted as Acrosterigma pristipleura (Dall, 1901) (unaccepted > superseded combination)
- Species Cardium (Trachycardium) pseudoangulatum Bülow, 1905 accepted as Cardium philippinense Hedley, 1899 (unaccepted > junior subjective synonym)
- Species Cardium (Trachycardium) sedanense Pannekoek, 1936 † accepted as Trachycardium sedanense (Pannekoek, 1936) † (unaccepted > superseded combination)
- Species Cardium (Trachycardium) serricostatum Melvill & Standen, 1899 accepted as Vasticardium serricostatum (Melvill & Standen, 1899) (unaccepted > superseded combination)
- Species Cardium (Trachycardium) sewelli Prashad, 1932 accepted as Vasticardium sewelli (Prashad, 1932) (unaccepted > superseded combination)
- Species Cardium (Trachycardium) sokkohense K. Martin, 1917 † accepted as Trachycardium sokkohense (K. Martin, 1917) † (unaccepted > superseded combination)
- Species Cardium (Trachycardium) spolongense K. Martin, 1917 † accepted as Trachycardium spolongense (K. Martin, 1917) † (unaccepted > superseded combination)
- Species Cardium (Trachycardium) stilpnaulax Cossmann, 1886 † accepted as Orthocardium stilpnaulax (Cossmann, 1886) † (unaccepted > superseded rank)
- Species Cardium (Trachycardium) stiriatum A. P. Brown & Pilsbry, 1911 † accepted as Phlogocardia stiriata (A. P. Brown & Pilsbry, 1911) † (unaccepted > superseded combination)
- Subspecies Cardium (Trachycardium) stiriatum leonense Mansfield, 1932 † accepted as Phlogocardia leonense (Mansfield, 1932) † (unaccepted > superseded rank)
- Subspecies Cardium (Trachycardium) stiriatum stiriatum A. P. Brown & Pilsbry, 1911 † accepted as Phlogocardia stiriata (A. P. Brown & Pilsbry, 1911) † (unaccepted > superseded rank)
- Species Cardium (Trachycardium) subelongatum G. B. Sowerby II, 1840 accepted as Cardium subelongatum G. B. Sowerby II, 1840
- Species Cardium (Trachycardium) transcendens Melvill & Standen, 1899 accepted as Acrosterigma transcendens (Melvill & Standen, 1899) (unaccepted > superseded combination)
- Species Cardium (Trachycardium) waitakiensis Suter, 1907 † accepted as Hedecardium (Hedecardium) waitakiense (Suter, 1907) † (superseded combination)
- Species Cardium (Trachycardium) cinderellae Maury, 1917 † represented as Trachycardium cinderellae (Maury, 1917) †
- Species Cardium (Trachycardium) oedalium Dall, 1900 † represented as Trachycardium oedalium (Dall, 1900) †
- Subspecies Cardium (Trachycardium) oedalium harveyense Mansfield, 1932 † represented as Trachycardium oedalium harveyense (Mansfield, 1932) †
- Subspecies Cardium (Trachycardium) oedalium oedalium Dall, 1900 † represented as Trachycardium oedalium oedalium (Dall, 1900) †
- Species Cardium (Trachycardium) biarmatum O. Boettger, 1883 † (uncertain > unassessed)
- Species Cardium (Trachycardium) caroniense Maury, 1925 † (uncertain > unassessed)
- Species Cardium (Trachycardium) couvense Maury, 1925 † (uncertain > unassessed)
- Species Cardium (Trachycardium) dominicense Gabb, 1873 † (uncertain > unassessed)
- Species Cardium (Trachycardium) eufaulense Conrad, 1860 † (uncertain > unassessed)
- Species Cardium (Trachycardium) inconspicuum Guppy, 1866 † (uncertain > unassessed)
- Species Cardium (Trachycardium) machapooriensis Maury, 1925 † (uncertain > unassessed)
- Species Cardium (Trachycardium) niasense O. Boettger, 1883 † (uncertain > unassessed)
- Species Cardium (Trachycardium) peruvianum Spieker, 1922 † (uncertain > unassessed)
- Species Cardium (Trachycardium) sanctidavidis Maury, 1925 † (uncertain > unassessed)
- Species Cardium (Trachycardium) tamanense Maury, 1925 † (uncertain > unassessed)
- Species Cardium (Trachycardium) venadense Maury, 1925 † (uncertain > unassessed)
- Species Cardium (Trachycardium) zorritensis Spieker, 1922 † (uncertain > unassessed)
- Subgenus Cardium (Trigoniocardia) Dall, 1900 accepted as Trigoniocardia Dall, 1900 (unaccepted > superseded rank)
- Species Cardium (Trigoniocardia) aminense Dall, 1900 † accepted as Trigoniocardia aminensis (Dall, 1900) † (unaccepted > superseded combination)
- Species Cardium (Trigoniocardia) antillarum A. d'Orbigny, 1853 accepted as Trigoniocardia antillarum (A. d'Orbigny, 1853) (unaccepted > superseded combination)
- Species Cardium (Trigoniocardia) willcoxi Dall, 1900 † accepted as Trigoniocardia willcoxi (Dall, 1900) † (unaccepted > superseded combination)
- Species Cardium (Trigoniocardia) affinis (E. T. Nelson, 1870) † (uncertain > unassessed)
- Species Cardium (Trigoniocardia) carolinae Maury, 1912 † (uncertain > unassessed)
- Species Cardium (Trigoniocardia) castum Guppy, 1966 † (uncertain > unassessed)
- Variety Cardium (Trigoniocardia) castum var. brassicum Maury, 1925 † (uncertain > unassessed)
- Species Cardium (Trigoniocardia) deadenense Mansfield, 1932 † (uncertain > unassessed)
- Species Cardium (Trigoniocardia) hannai Olsson, 1932 † (uncertain > unassessed)
- Species Cardium (Trigoniocardia) manzanillense Maury, 1925 † (uncertain > unassessed)
- Species Cardium (Trigoniocardia) maturense Dall, 1900 † (uncertain > unassessed)
- Species Cardium (Trigoniocardia) mirandense Maury, 1925 † (uncertain > unassessed)
- Species Cardium (Trigoniocardia) periimeris Maury, 1925 † (uncertain > unassessed)
- Subgenus Cardium (Tropidocardium) Römer, 1868 accepted as Cardium Linnaeus, 1758 (unaccepted > junior objective synonym)
- Subgenus Cardium (Tulongocardium) C.-Z. Chen, J.-H. Chen & Z.-M. Zhang, 1976 † accepted as Tulongocardium C.-Z. Chen, J.-H. Chen & Z.-M. Zhang, 1976 † (unaccepted > superseded rank)
- Species Cardium (Tulongocardium) pluriradiatum C.-Z. Chen, J.-H. Chen & Z.-M. Zhang, 1976 † (uncertain > unassessed)
- Species Cardium abichi R. Hoernes, 1874 † accepted as Paradacna abichi (R. Hoernes, 1874) † (unaccepted > superseded combination)
- Variety Cardium abichi var. anconaetanum Capellini, 1879 † accepted as Pontalmyra anconaetana (Capellini, 1879) † (superseded rank and combination)
- Species Cardium abramovici A. A. Ali-Zade & Baba-Zade, 1967 † accepted as Raricardium konjuschevski (K. A. Ali-Zade, 1932) † (unaccepted > junior subjective synonym)
- Species Cardium abreki Uspenskaja, 1931 † accepted as Avicardium abreki (Uspenskaja, 1931) † (unaccepted > superseded combination)
- Species Cardium abundans Liverovskaya, 1939 † accepted as Plagiocardium abundans (Liverovskaya, 1939) † (unaccepted > superseded combination)
- Species Cardium acardo Deshayes, 1838 † accepted as Arcicardium acardo (Deshayes, 1838) † (unaccepted > superseded combination)
- Species Cardium acerbum V. P. Kolesnikov, 1929 † accepted as Obsoletiformes acerbus (V. P. Kolesnikov, 1929) † (unaccepted > superseded combination)
- Species Cardium aculcatum Aradas & Benoit, 1872 accepted as Acanthocardia aculeata (Linnaeus, 1758) (unaccepted > misspelling - incorrect subsequent spelling)
- Species Cardium aculeatum Linnaeus, 1758 accepted as Acanthocardia aculeata (Linnaeus, 1758) (unaccepted > superseded combination)
- Variety Cardium aculeatum var. alba Monterosato, 1872 accepted as Acanthocardia aculeata (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Variety Cardium aculeatum var. depressa J. T. Marshall, 1893 accepted as Acanthocardia aculeata (Linnaeus, 1758) (unaccepted > junior homonym, non Cardium depressum Deshayes, 1838)
- Variety Cardium aculeatum var. perrugosa Fontannes, 1882 † accepted as Acanthocardia perrugosa (Fontannes, 1882) † (unaccepted > superseded combination)
- Species Cardium acutecostatum A. d'Orbigny, 1843 † accepted as Cardium cleryi Deshayes, 1857 † (unaccepted > misspelling - incorrect subsequent spelling)
- Species Cardium acuticostatum A. d'Orbigny, 1843 † accepted as Cardium cleryi Deshayes, 1857 † (unaccepted > junior homonym, invalid: junior homonym of C. acuticostatum Münster, 1834)
- Species Cardium adacnoides Cheltsov, 1965 † accepted as Acobaecardium akobae (Cheltsov, 1965) † (subjective synonym)
- Species Cardium adamsii Reeve, 1850 accepted as Cardium fornicatum G. B. Sowerby II, 1840 (unaccepted > junior subjective synonym)
- Species Cardium adonisi A. A. Ali-Zade & Baba-Zade, 1967 † accepted as Miricardium caracutum (Uspenskaja, 1931) † (unaccepted > junior subjective synonym)
- Species Cardium aeolicum Gmelin, 1791 accepted as Lyrocardium aeolicum (Born, 1778)
- Species Cardium aeolicum Born, 1778 accepted as Lyrocardium aeolicum (Born, 1778) (unaccepted > superseded combination)
- Species Cardium aequale Deshayes, 1855 accepted as Cardium dionaeum Broderip & G. B. Sowerby I, 1829 (unaccepted > junior subjective synonym)
- Species Cardium agassizii Michelotti, 1839 † accepted as Cardiolucina agassizii (Michelotti, 1839) † (original combination)
- Species Cardium ainuanum Yokoyama, 1927 † accepted as Clinocardium ainuanum (Yokoyama, 1927) † (unaccepted > superseded combination)
- Species Cardium akobae Cheltsov, 1965 † accepted as Acobaecardium akobae (Cheltsov, 1965) † (unaccepted > superseded combination)
- Species Cardium aktamense A. A. Ali-Zade, 1967 † accepted as Cerastoderma dombra (Andrusov, 1902) † (tentative junior subjective synonym)
- Species Cardium aktschagilicum K. A. Ali-Zade, 1941 † accepted as Aktschagylocardium uspenskaiae (V. P. Kolesnikov, 1950) †
- Species Cardium alabastrum P. P. Carpenter, 1857 accepted as Trigoniocardia granifera (Broderip & G. B. Sowerby I, 1829) (unaccepted > junior subjective synonym)
- Species Cardium albanicum [sic] † accepted as Miricardium dahestanicum (Uspenskaja, 1931) † (incorrect subsequent spelling, tentative junior subjective synonym)
- Species Cardium albanum A. A. Ali-Zade & Baba-Zade, 1967 † accepted as Miricardium dahestanicum (Uspenskaja, 1931) † (tentative junior subjective synonym)
- Species Cardium alfuricum P. J. Fischer, 1921 † accepted as Fragum alfuricum (P. J. Fischer, 1921) † (unaccepted > superseded combination)
- Species Cardium aliforme J. De C. Sowerby, 1827 † accepted as Conocardium aliforme (J. De C. Sowerby, 1827) † (original combination)
- Species Cardium alternatum G. B. Sowerby II, 1840 accepted as Vasticardium angulatum (Lamarck, 1819) (unaccepted > junior subjective synonym)
- Species Cardium altum Cheltsov, 1965 † accepted as Cerastoderma altum (Cheltsov, 1965) † (unaccepted > superseded combination)
- Species Cardium amandum A. A. Ali-Zade, 1967 † accepted as Cerastoderma siphonophorum (Andrusov, 1902) † (unaccepted > junior subjective synonym)
- Species Cardium amboinense Gmelin, 1791 accepted as Tucetona pectunculus (Linnaeus, 1758)
- Species Cardium ameghinoi Ihering, 1907 † accepted as Hedecardium (Iheringicardium) ameghinoi (Ihering, 1907) † (unaccepted > superseded combination)
- Species Cardium ammoni Rzehak, 1893 † accepted as Limnopagetia ammoni (Rzehak, 1893) † (unaccepted > superseded combination)
- Species Cardium anapi A. A. Ali-Zade, 1967 † accepted as Miricardium caracutum (Uspenskaja, 1931) † (unaccepted > junior subjective synonym)
- Species Cardium andreae Dujardin, 1837 † accepted as Acanthocardia andreae (Dujardin, 1837) † (unaccepted > superseded combination)
- Species Cardium andrusovi Sokolov, 1899 † accepted as Acanthocardia andrusovi (Sokolov, 1899) † (unaccepted > superseded combination)
- Variety Cardium andrusovi var. pavlinovi Zhizhchenko, 1959 † accepted as Acanthocardia paucicostata (G. B. Sowerby II, 1834) (unaccepted > junior subjective synonym)
- Variety Cardium andrusovi var. tulskajensis Pavlinova-Ilyina, 1957 † accepted as Acanthocardia paucicostata (G. B. Sowerby II, 1834) (unaccepted > junior subjective synonym)
- Species Cardium angulatum A. A. Ali-Zade, 1967 † accepted as Miricardium caracutum (Uspenskaja, 1931) † (tentative junior subjective synonym)
- Species Cardium angulatum Lamarck, 1819 accepted as Vasticardium angulatum (Lamarck, 1819) (unaccepted > superseded combination)
- Species Cardium anguliferum F. Sandberger, 1863 † accepted as Habecardium cingulatum (Goldfuss, 1837) † (unaccepted > junior subjective synonym, Invalid: junior homonym of Cardium anguliferum Roemer, 1850)
- Species Cardium angulosum Deshayes, 1857 † accepted as Plagiodacna angulosa (Deshayes, 1857) † (unaccepted > superseded combination)
- Species Cardium angusticostatum Rousseau, 1842 † accepted as Stenodacna angusticostata (Rousseau, 1842) † (unaccepted > superseded combination)
- Species Cardium annae Pilsbry, 1904 accepted as Fulvia mutica (Reeve, 1844) (unaccepted > junior subjective synonym)
- Species Cardium antillarum A. d'Orbigny, 1853 accepted as Trigoniocardia antillarum (A. d'Orbigny, 1853) (unaccepted > superseded combination)
- Species Cardium antropovi A. A. Ali-Zade, 1967 † accepted as Miricardium dahestanicum (Uspenskaja, 1931) † (tentative junior subjective synonym)
- Species Cardium anubis A. A. Ali-Zade, 1967 † accepted as Acobaecardium akobae (Cheltsov, 1965) † (unaccepted > junior subjective synonym)
- Species Cardium apertum Chemnitz, 1782 accepted as Cardium apertum Bruguière, 1789 (unaccepted > unavailable name, published in a work rejected by ICZN direction 1; available from Bruguière, 1789)
- Species Cardium apertum Münster, 1837 † accepted as Lymnocardium subapertum (A. d'Orbigny, 1852) † (unaccepted > junior homonym, junior homonym of Cardium apertum Bruguière, 1789; Cardium subapertum is a replacement name)
- Species Cardium apertum Bruguière, 1789 accepted as Fulvia aperta (Bruguière, 1789) (unaccepted > superseded combination)
- Species Cardium aperturatum Deshayes, 1853 † accepted as Bosphoricardium aperturatum (Deshayes, 1853) † (unaccepted > superseded combination)
- Species Cardium apicinum (P. P. Carpenter, 1864) accepted as Laevicardium elenense (G. B. Sowerby II, 1840) (unaccepted > junior subjective synonym)
- Species Cardium apporectum A. A. Ali-Zade & Baba-Zade, 1967 † accepted as Miricardium caracutum (Uspenskaja, 1931) † (tentative junior subjective synonym)
- Species Cardium approbum A. A. Ali-Zade, 1967 † accepted as Miricardium dahestanicum (Uspenskaja, 1931) † (tentative junior subjective synonym)
- Species Cardium aquilinum Mittre, 1842 accepted as Parvicardium exiguum (Gmelin, 1791) (unaccepted > junior subjective synonym)
- Species Cardium aquitanicum Mayer, 1858 † accepted as Lyrocardium aquitanicum (Mayer, 1858) † (unaccepted > superseded combination)
- Species Cardium arabicus Issel, 1869 accepted as Afrocardium richardi (Audouin, 1826) (unaccepted > junior subjective synonym)
- Species Cardium aradasi Crema, 1903 † accepted as Papillicardium aradasi (Crema, 1903) † (unaccepted > superseded combination)
- Species Cardium arbacti A. A. Ali-Zade & Baba-Zade, 1967 † accepted as Miricardium dahestanicum (Uspenskaja, 1931) † (tentative junior subjective synonym)
- Species Cardium arcaeformis Chapman & Crespin, 1934 † accepted as Glans latissima (Tate, 1886) † (junior subjective synonym)
- Species Cardium arcella Dujardin, 1837 † accepted as Cerastoderma arcellum (Dujardin, 1837) † (unaccepted > superseded combination)
- Species Cardium arcticum G. B. Sowerby II, 1834 accepted as Cardium ciliatum O. Fabricius, 1780 (unaccepted > junior subjective synonym)
- Species Cardium arcuatulum G. B. Sowerby III, 1874 accepted as Fragum mundum (Reeve, 1845) (unaccepted > junior subjective synonym)
- Species Cardium arcuatum Montagu, 1803 accepted as Lucinella divaricata (Linnaeus, 1758) (synonym)
- Species Cardium arenatum P. P. Carpenter, 1857 accepted as Cardium quadragenarium Conrad, 1837 (unaccepted > junior subjective synonym)
- Species Cardium arenicolum Reeve, 1845 accepted as Cardium maculosum W. Wood, 1815 (unaccepted > junior subjective synonym)
- Species Cardium argovianum Mayer, 1865 † accepted as Protocardia argoviana (Mayer, 1865) † (original combination)
- Species Cardium arguni Uspenskaja, 1931 † accepted as Avicardium kamishense (Uspenskaja, 1931) † (subjective synonym)
- Species Cardium argutum A. A. Ali-Zade, 1967 † accepted as Miricardium dahestanicum (Uspenskaja, 1931) † (tentative junior subjective synonym)
- Species Cardium aristi A. A. Ali-Zade & Baba-Zade, 1967 † accepted as Cerastoderma altum (Cheltsov, 1965) † (tentative junior subjective synonym)
- Species Cardium arpadense M. Hörnes, 1861 † accepted as Lymnocardium arpadense (M. Hörnes, 1861) † (unaccepted > superseded combination)
- Species Cardium asaphum A. F. Leanza, 1942 † accepted as Asoella asapha (A. F. Leanza, 1942) † (unaccepted > superseded combination)
- Species Cardium asiaticum A. A. Ali-Zade, 1967 † accepted as Cerastoderma dombra vogdti (Andrusov, 1902) † (unaccepted > junior subjective synonym)
- Species Cardium asiaticum Chemnitz, 1782 accepted as Cardium asiaticum Bruguière, 1789 (unaccepted > unavailable name, published in a work rejected by ICZN direction 1; available from Bruguière, 1789)
- Species Cardium asiaticum Bruguière, 1789 accepted as Vepricardium asiaticum (Bruguière, 1789) (unaccepted > superseded combination)
- Species Cardium aspersum G. B. Sowerby I, 1833 accepted as Papyridea aspersa (G. B. Sowerby I, 1833) (unaccepted > superseded combination, original combination)
- Species Cardium asperulum Lamarck, 1805 † accepted as Vepricardium asperulum (Lamarck, 1805) † (unaccepted > superseded combination)
- Species Cardium assimile Reeve, 1844 accepted as Vasticardium assimile (Reeve, 1844) (unaccepted > superseded combination)
- Species Cardium atrocis A. A. Ali-Zade, 1967 † accepted as Miricardium dahestanicum (Uspenskaja, 1931) † (tentative junior subjective synonym)
- Species Cardium attenuatum G. B. Sowerby II, 1841 accepted as Acrosterigma attenuatum (G. B. Sowerby II, 1841) (unaccepted > superseded combination)
- Species Cardium auingeri T. Fuchs, 1870 † accepted as Plagiodacna auingeri (T. Fuchs, 1870) † (unaccepted > superseded combination)
- Species Cardium aurantiacum A. Adams & Reeve, 1850 accepted as Lyrocardium aurantiacum (A. Adams & Reeve, 1850) (unaccepted > superseded combination)
- Species Cardium auricula Niebuhr, 1775 accepted as Lunulicardia auricula (Niebuhr, 1775) (unaccepted > superseded combination)
- Species Cardium australe G. B. Sowerby II, 1834 accepted as Fulvia australis (G. B. Sowerby II, 1834) (unaccepted > superseded combination)
- Species Cardium australiense Reeve, 1844 accepted as Hemidonax australiensis (Reeve, 1844) (original combination)
- Species Cardium aventini A. A. Ali-Zade, 1967 † accepted as Miricardium caracutum (Uspenskaja, 1931) † (tentative junior subjective synonym)
- Species Cardium aviculare Deshayes, 1829 † accepted as Avicularium lithocardium (Linnaeus, 1771) † (Unjustified emendation of Cardita avicularia Lamarck, 1805)
- Species Cardium aviculare Sinzov, 1875 † accepted as Aviculocardium aviculare (Sinzov, 1875) † (unaccepted > superseded combination)
- Species Cardium avisanense Fontannes, 1879 † accepted as Procardium avisanense (Fontannes, 1879) † (unaccepted > superseded combination)
- Species Cardium azerbajdjanicum K. A. Ali-Zade, 1932 † accepted as Cerastoderma azerbajdjanicum (K. A. Ali-Zade, 1932) † (unaccepted > superseded combination)
- Species Cardium baeri Grimm, 1877 accepted as Didacna baeri (Grimm, 1877) (unaccepted > superseded combination)
- Species Cardium baericrassum Pavlov, 1925 † accepted as Didacna baericrassa (Pavlov, 1925) † (unaccepted > superseded combination)
- Species Cardium bajarunasi V. P. Kolesnikov, 1929 † accepted as Obsoletiformes bajarunasi (V. P. Kolesnikov, 1929) † (unaccepted > superseded combination)
- Variety Cardium bajarunasi var. urupensis V. P. Kolesnikov, 1929 † accepted as Obsoletiformes bajarunasi urupensis (V. P. Kolesnikov, 1929) † (unaccepted > superseded combination)
- Species Cardium balatonicum T. Fuchs, 1870 † accepted as Pseudocatillus balatonicus (T. Fuchs, 1870) † (unaccepted > superseded combination)
- Species Cardium balchanicum A. A. Ali-Zade, 1967 † accepted as Cerastoderma konschini (Andrusov, 1902) † (tentative junior subjective synonym)
- Species Cardium banaticum T. Fuchs, 1870 † accepted as Bosphoricardium banaticum (T. Fuchs, 1870) † (unaccepted > superseded combination)
- Species Cardium baranowense Hilber, 1882 † accepted as Laevicardium baranowense (Hilber, 1882) † (unaccepted > superseded combination)
- Species Cardium barbotdemarnii Grimm, 1877 accepted as Didacna barbotdemarnii (Grimm, 1877) (unaccepted > superseded combination, original combination)
- Species Cardium barboti R. Hoernes, 1874 † accepted as Replidacna barboti (R. Hoernes, 1874) † (unaccepted > superseded combination)
- Species Cardium barrandai Mayer-Eymar, 1900 † accepted as Acanthocardia turonica (Mayer, 1861) † (unaccepted > misspelling - incorrect subsequent spelling)
- Species Cardium barrandei Mayer-Eymar, 1900 † accepted as Cardium barrandai Mayer-Eymar, 1900 † (unaccepted > junior subjective synonym)
- Species Cardium bavaricum Ammon, 1888 † accepted as Limnopagetia bavarica (Ammon, 1888) † (unaccepted > superseded combination)
- Species Cardium bayeri Haanstra & Spiker, 1932 † accepted as Frigidocardium bayeri (Haanstra & Spiker, 1932) † (unaccepted > superseded combination)
- Species Cardium bayerni R. Hoernes, 1874 † accepted as Chartoconcha bayerni (R. Hoernes, 1874) † (unaccepted > superseded combination)
- Species Cardium bazini Deshayes, 1858 † accepted as Bucardium bazini (Deshayes, 1858) † (unaccepted > superseded combination)
- Species Cardium beaumonti "A. d'Orbigny, 1844" † accepted as Obsoletiformes obsoletus (Eichwald, 1830) † (unaccepted > junior objective synonym)
- Species Cardium beaumontianum "A. d'Orbigny, 1845" † accepted as Obsoletiformes obsoletus (Eichwald, 1830) † (unaccepted > junior objective synonym)
- Species Cardium bechei Reeve, 1847 accepted as Nemocardium bechei (Reeve, 1847) (unaccepted > superseded combination)
- Species Cardium belcheri Broderip & G. B. Sowerby I, 1829 accepted as Phlogocardia belcheri (Broderip & G. B. Sowerby I, 1829) (unaccepted > superseded combination)
- Species Cardium belgicum De Malzine, 1867 accepted as Cerastoderma edule (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Species Cardium beli A. A. Ali-Zade & Petrova, 1969 † accepted as Cerastoderma altum (Cheltsov, 1965) † (unaccepted > junior subjective synonym)
- Species Cardium bellulum A. A. Ali-Zade, 1967 † accepted as Cerastoderma dombra vogdti (Andrusov, 1902) † (unaccepted > junior subjective synonym)
- Species Cardium belticum Reeve, 1845 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Species Cardium belusi A. A. Ali-Zade, 1967 † accepted as Miricardium caracutum (Uspenskaja, 1931) † (unaccepted > junior subjective synonym)
- Species Cardium bengasiensis Kaltenbach, 1943 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Species Cardium benoisti Cossmann, 1896 † accepted as Parvicardium benoisti (Cossmann, 1896) † (unaccepted > superseded combination)
- Species Cardium bianconianum Cocconi, 1873 † accepted as Acanthocardia bianconiana (Cocconi, 1873) † (unaccepted > superseded combination)
- Species Cardium biangulatum Broderip & G. B. Sowerby I, 1829 accepted as Americardia biangulata (Broderip & G. B. Sowerby I, 1829) (unaccepted > superseded combination)
- Species Cardium biradiatum Bruguière, 1789 accepted as Acrosterigma biradiatum (Bruguière, 1789) (original combination)
- Species Cardium blandum A. Gould, 1850 accepted as Keenocardium blandum (A. Gould, 1850) (unaccepted > superseded combination, original combination)
- Species Cardium bogatchevi V. P. Kolesnikov, 1929 † accepted as Cerastoderma arcellum bogatchevi (V. P. Kolesnikov, 1929) † (superseded rank and combination)
- Species Cardium bollenense Mayer, 1871 † accepted as Pontalmyra bollenensis (Mayer, 1871) † (unaccepted > superseded combination)
- Variety Cardium bollenense var. sparsisulcata Fontannes, 1882 † (uncertain > taxon inquirendum)
- Species Cardium bollense [sic] † accepted as Pontalmyra bollenensis (Mayer, 1871) † (unaccepted > misspelling - incorrect subsequent spelling)
- Species Cardium bomasense K. Martin, 1917 † accepted as Freneixicardia bomasense (K. Martin, 1917) † (unaccepted > superseded combination)
- Species Cardium boreale Reeve, 1845 accepted as Cardium groenlandicum Mohr, 1786 (unaccepted > junior homonym, non Cardium boreale Broderip & G. B. Sowerby I, 1829)
- Species Cardium boreale Broderip & G. B. Sowerby I, 1829 accepted as Cardium californiense Deshayes, 1839 (unaccepted > junior subjective synonym, uncertain synonym)
- Species Cardium bouei Deshayes, 1858 † accepted as Loxocardium bouei (Deshayes, 1858) † (unaccepted > superseded combination)
- Species Cardium bourdoti Cossmann, 1882 † accepted as Parvicardium bourdoti (Cossmann, 1882) † (unaccepted > superseded combination)
- Species Cardium bouryi Cossmann, 1886 † accepted as Orthocardium bouryi (Cossmann, 1886) † (unaccepted > superseded combination)
- Species Cardium bozdagiense K. A. Ali-Zade, 1941 † accepted as Aktschagylocardium uspenskaiae (V. P. Kolesnikov, 1950) †
- Species Cardium brachytonum Suter, 1917 † accepted as Tucetona brachytona (Suter, 1917) † (superseded combination)
- Species Cardium brasilianum Lamarck, 1819 accepted as Laevicardium brasilianum (Lamarck, 1819) (unaccepted > superseded combination)
- Species Cardium braunsi Tokunaga, 1906 † accepted as Clinocardium braunsi (Tokunaga, 1906) † (unaccepted > superseded combination)
- Species Cardium brocchii Mayer, 1866 † accepted as Acanthocardia brocchii (Mayer, 1866) † (unaccepted > superseded combination)
- Species Cardium bruguierei Deshayes, 1857 † accepted as Conocardium elongatum (J. Sowerby, 1815) †
- Species Cardium brunneri Hector, 1886 † accepted as Hedecardium brunneri (Hector, 1886) † (original combination)
- Species Cardium brusinai Rzehak, 1893 † accepted as Limnopagetia moravica (Rzehak, 1883) † (unaccepted > junior subjective synonym)
- Species Cardium buelowi Rolle, 1896 accepted as Keenocardium buelowi (Rolle, 1896) (unaccepted > superseded combination, original combination)
- Species Cardium bullatum (Linnaeus, 1758) sensu Lamarck, 1819 accepted as Papyridea soleniformis (Bruguière, 1789) (unaccepted > misapplication)
- Species Cardium bullatum Locard, 1891 accepted as Acanthocardia echinata (Linnaeus, 1758) (unaccepted > junior homonym, non Cardium bullatum (Linnaeus, 1858) sensu Lamarck, 1819)
- Species Cardium bülowi Rolle, 1896 accepted as Keenocardium buelowi (Rolle, 1896) (unaccepted > misspelling - incorrect original spelling)
- Species Cardium burchardti Dunker, 1877 accepted as Acrosterigma burchardi (Dunker, 1877) (unaccepted > misspelling - incorrect original spelling)
- Species Cardium burdigalinum Lamarck, 1819 † accepted as Bucardium burdigalinum (Lamarck, 1819) † (original combination)
- Species Cardium burnupi G. B. Sowerby III, 1897 accepted as Vepricardium burnupi (G. B. Sowerby III, 1897) (unaccepted > superseded combination)
- Species Cardium calcitrapoides Lamarck, 1805 † accepted as Paraglans calcitrapoides (Lamarck, 1805) † (original combination)
- Species Cardium californianum Conrad, 1837 accepted as Clinocardium nuttallii (Conrad, 1837) (unaccepted > junior subjective synonym)
- Species Cardium californiense Deshayes, 1839 accepted as Keenocardium californiense (Deshayes, 1839) (unaccepted > superseded combination)
- Variety Cardium californiense var. comoxense Dall, 1900 † accepted as Cardium ciliatum O. Fabricius, 1780 (unaccepted > junior subjective synonym)
- Species Cardium campechiense Röding, 1798 accepted as Dallocardia muricata (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Species Cardium cantuariense Laws, 1933 † accepted as Hedecardium cantuariense (Laws, 1933) † (superseded combination)
- Species Cardium caparti Nicklès, 1955 accepted as Europicardium caparti (Nicklès, 1955) (unaccepted > superseded combination)
- Species Cardium capsoides Bayan, 1873 † accepted as Parvicardium capsoides (Bayan, 1873) † (unaccepted > superseded combination)
- Species Cardium caracutum Uspenskaja, 1931 † accepted as Miricardium caracutum (Uspenskaja, 1931) † (unaccepted > superseded combination)
- Species Cardium cardissa Linnaeus, 1758 accepted as Corculum cardissa (Linnaeus, 1758) (unaccepted > superseded combination)
- Species Cardium carditaeforme Reeve, 1845 accepted as Afrocardium richardi (Audouin, 1826) (unaccepted > junior subjective synonym)
- Species Cardium carinatum Deshayes, 1838 † accepted as Plagiodacna angulosa (Deshayes, 1857) † (unaccepted > junior homonym, non Cardium carinatum Bronn, 1831)
- Variety Cardium carinatum var. major R. Hoernes, 1874 † accepted as Plagiodacna angulosa (Deshayes, 1857) † (unaccepted > junior subjective synonym)
- Variety Cardium carinatum var. densecostata Almera & Bofill y Poch, 1894 † (uncertain > taxon inquirendum)
- Variety Cardium carinatum var. elongatum Capellini, 1879 † (uncertain > taxon inquirendum)
- Variety Cardium carinatum var. filicostata Almera & Bofill y Poch, 1894 † (uncertain > taxon inquirendum)
- Variety Cardium carinatum var. magnocardo Almera & Bofill y Poch, 1894 † (uncertain > taxon inquirendum)
- Variety Cardium carinatum var. minor Almera & Bofill y Poch, 1894 † (uncertain > taxon inquirendum)
- Species Cardium carneosum da Costa, 1779 accepted as Strigilla carnaria (Linnaeus, 1758)
- Species Cardium carnuntinum M. Hörnes, 1861 † accepted as Lymnocardium carnuntinum (M. Hörnes, 1861) † (unaccepted > superseded combination)
- Variety Cardium carnuntinum var. etruscum Capellini, 1873 † (uncertain > taxon inquirendum)
- Species Cardium carolinensis Conrad, 1863 † accepted as Dinocardium robustum ([Lightfoot], 1786) (unaccepted > junior subjective synonym)
- Species Cardium carolinum A. d'Orbigny, 1844 † accepted as Granocardium carolinum (A. d'Orbigny, 1844) † (unaccepted > superseded combination)
- Species Cardium carpatinum (Jekelius, 1944) † accepted as Replidacna carpatina Jekelius, 1944 † (unaccepted > superseded combination)
- Species Cardium casertanum Poli, 1791 accepted as Euglesa casertana (Poli, 1791) (unaccepted > superseded combination)
- Species Cardium caspium A. A. Ali-Zade, 1967 † accepted as Cerastoderma karelini (Andrusov, 1902) † (unaccepted > junior subjective synonym)
- Species Cardium castellinense Capellini, 1873 † accepted as Pontalmyra castellinensis (Capellini, 1873) † (unaccepted > superseded combination)
- Species Cardium castum Guppy, 1866 † accepted as Cardium (Trigoniocardia) castum Guppy, 1966 † (unaccepted > superseded combination)
- Species Cardium caudatum K. A. Ali-Zade, 1941 † accepted as Aktschagylocardium uspenskaiae (V. P. Kolesnikov, 1950) †
- Species Cardium cazecae Andrusov, 1890 † accepted as Pseudocatillus cazecae (Andrusov, 1890) † (unaccepted > superseded combination)
- Species Cardium cekusi Gorjanović-Kramberger, 1890 † accepted as Paradacna cekusi (Gorjanović-Kramberger, 1890) † (unaccepted > superseded combination)
- Species Cardium centopleurum Andrusov, 1902 † accepted as Obsoletiformes centopleurus (Andrusov, 1902) † (unaccepted > superseded combination)
- Species Cardium centumliratum Melvill, 1907 accepted as Frigidocardium centumliratum (Melvill, 1907) (unaccepted > superseded combination)
- Species Cardium centumpanium Andrusov, 1911 † accepted as Acanthocardia centumpania (Andrusov, 1911) † (unaccepted > superseded combination)
- Species Cardium centumpleurum [sic] † accepted as Obsoletiformes centopleurus (Andrusov, 1902) † (unaccepted > misspelling - incorrect subsequent spelling)
- Species Cardium ceramidum Dall, 1886 accepted as Trigoniocardia antillarum (A. d'Orbigny, 1853) (unaccepted > junior subjective synonym)
- Species Cardium chartaceum Brusina, 1874 † accepted as Parvidacna chartacea (Brusina, 1874) † (unaccepted > superseded combination)
- Species Cardium chazaricum A. A. Ali-Zade, 1967 † accepted as Cerastoderma altum (Cheltsov, 1965) † (tentative junior subjective synonym)
- Species Cardium chiae Almera, 1894 † accepted as Pontalmyra incerta chiae (Almera, 1894) † (superseded rank and combination)
- Species Cardium chorasanicum A. A. Ali-Zade, 1967 † accepted as Cerastoderma konschini (Andrusov, 1902) † (tentative junior subjective synonym)
- Species Cardium chorezmicum A. A. Ali-Zade, 1967 † accepted as Cerastoderma dombra (Andrusov, 1902) † (unaccepted > junior subjective synonym)
- Species Cardium ciliatum O. Fabricius, 1780 accepted as Ciliatocardium ciliatum (O. Fabricius, 1780) (unaccepted > superseded combination)
- Species Cardium cingulatum Goldfuss, 1837 † accepted as Habecardium cingulatum (Goldfuss, 1837) † (unaccepted > superseded combination)
- Species Cardium citrinum W. Wood, 1815 accepted as Cardium serratum Linnaeus, 1758 (unaccepted > junior subjective synonym)
- Species Cardium civicum Yokoyama, 1927 † accepted as Cardiolucina civica (Yokoyama, 1927) (unaccepted > superseded combination)
- Species Cardium clavatum Hilber, 1879 † accepted as Acanthocardia clavata (Hilber, 1879) † (unaccepted > superseded combination)
- Species Cardium clodiense Brocchi, 1814 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Species Cardium cochleatum Quenstedt, 1852 † accepted as Pterocardia cochleata (Quenstedt, 1852) † (original combination)
- Species Cardium coefiensis Kaltenbach, 1943 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Subspecies Cardium coefiensis cyrenaica Kaltenbach, 1949 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Subspecies Cardium coefiensis heilmeieri Kaltenbach, 1949 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Species Cardium collineum Buvignier, 1852 † accepted as Protocardia collinea (Buvignier, 1852) † (original combination)
- Species Cardium complanatum T. Fuchs, 1870 † accepted as Phyllocardium complanatum (T. Fuchs, 1870) † (unaccepted > superseded combination)
- Species Cardium conjungens M. Hörnes, 1861 † accepted as Lymnocardium conjungens (M. Hörnes, 1861) † (unaccepted > superseded combination)
- Species Cardium consors G. B. Sowerby I, 1833 accepted as Trachycardium consors (G. B. Sowerby I, 1833) (original combination)
- Variety Cardium consors var. laxum Dall, 1901 accepted as Trachycardium consors (G. B. Sowerby I, 1833) (unaccepted > junior subjective synonym)
- Species Cardium conspectum Cheltsov, 1965 † accepted as Acobaecardium conspectum (Cheltsov, 1965) † (unaccepted > superseded combination)
- Species Cardium convexum A. A. Ali-Zade, 1967 † accepted as Miricardium dahestanicum (Uspenskaja, 1931) † (junior homonym of Cardium convexum Deshayes, 1858, and tentative junior subjective synonym)
- Species Cardium convexum Deshayes, 1858 † accepted as Agnocardia convexa (Deshayes, 1858) † (unaccepted > superseded combination)
- Species Cardium cooperii Gabb, 1864 † accepted as Nemocardium cooperii (Gabb, 1864) † (original combination)
- Variety Cardium cooperii var. lorenzanum Arnold, 1908 † accepted as Anechinocardium lorenzanum (Arnold, 1908) † (unaccepted > superseded combination)
- Species Cardium copiosum Cheltsov, 1965 † accepted as Acobaecardium akobae (Cheltsov, 1965) † (tentative subjective synonym)
- Species Cardium corallinum Leymerie, 1846 † accepted as Pterocardia corallina (Leymerie, 1846) †
- Species Cardium corallinum Linnaeus, 1758 accepted as Mactra corallina (Linnaeus, 1758) (unaccepted > superseded combination)
- Species Cardium corbis Martyn, 1784 accepted as Clinocardium nuttallii (Conrad, 1837) (unaccepted > unavailable name, non-binominal)
- Species Cardium corbuloides Deshayes, 1838 † accepted as Pseudocatillus corbuloides (Deshayes, 1838) † (unaccepted > superseded combination)
- Species Cardium coronatum Schröter, 1786 accepted as Vepricardium coronatum (Schröter, 1786) (unaccepted > superseded combination)
- Species Cardium coronatum Spengler, 1799 accepted as Vepricardium coronatum (Schröter, 1786) (unaccepted > junior homonym, non Cardium coronatum Schröter, 1786)
- Species Cardium cosmetum Cossmann, 1886 † accepted as Parvicardium cosmetum (Cossmann, 1886) † (unaccepted > superseded combination)
- Species Cardium coxi Hector, 1886 † accepted as Maoricardium coxi (Hector, 1886) † (original combination)
- Species Cardium cracentis A. A. Ali-Zade & Baba-Zade, 1967 † accepted as Avicardium litorosum (A. A. Ali-Zade & Kabakova, 1967) † (subjective synonym)
- Species Cardium crassatellatum Deshayes, 1838 † accepted as Pontalmyra crassatellata (Deshayes, 1838) † (unaccepted > superseded combination)
- Species Cardium crassispinosum G. B. Sowerby II, 1834 accepted as Acanthocardia echinata (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Species Cardium crassum Eichwald, 1829 accepted as Cardium eichwaldi Krynicki, 1837 (unaccepted > junior homonym, invalid: non Cardium crassum Gmelin, 1791; Cardium eichwaldi Krynicki, 1837 is a replacement name)
- Species Cardium crassum Gmelin, 1791 accepted as Laevicardium crassum (Gmelin, 1791) (original combination)
- Species Cardium crenelloides Melvill, 1909 accepted as Afrocardium richardi (Audouin, 1826) (unaccepted > superseded combination)
- Species Cardium crenulatum Lamarck, 1819 accepted as Cerastoderma edule (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Species Cardium crenulatum Rousseau, 1842 † accepted as Pontalmyra crenulata (Rousseau, 1842) † (unaccepted > junior homonym, non Cardium crenulatum Lamarck, 1819)
- Species Cardium cristagalli L. Róth, 1878 † accepted as Lymnocardium cristagalli (L. Róth, 1878) † (unaccepted > superseded combination)
- Species Cardium cruentatum A. Gould, 1855 accepted as Laevicardium substriatum (Conrad, 1837) (unaccepted > junior subjective synonym)
- Species Cardium cruentum G. Perry, 1811 accepted as Fragum unedo (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Species Cardium cucullatum Goldfuss, 1837 † accepted as Eotrapezium cucullatum (Goldfuss, 1837) † (unaccepted > superseded combination)
- Species Cardium cuculloides Tate, 1886 † accepted as Notocallista (Striacallista) cuculloides (Tate, 1886) † (unaccepted > superseded combination)
- Species Cardium cucurtense Andrusov, 1902 † accepted as Avicardium lecanoideum (Andrusov, 1902) † (subjective synonym)
- Species Cardium cumingii Broderip, 1833 accepted as Lophocardium cumingii (Broderip, 1833) (unaccepted > superseded combination)
- Species Cardium cygnorum Deshayes, 1855 accepted as Acrosterigma cygnorum (Deshayes, 1855) (unaccepted > superseded combination)
- Species Cardium cypricardioides Capellini, 1880 † accepted as Plagiodacna cypricardioides (Capellini, 1880) † (unaccepted > superseded combination)
- Species Cardium cyreniforme Buvignier, 1852 † accepted as Isocyprina cyreniformis (Buvignier, 1852) † (unaccepted > superseded combination)
- Species Cardium cyrense K. A. Ali-Zade, 1941 † accepted as Aktschagylocardium uspenskaiae (V. P. Kolesnikov, 1950) †
- Species Cardium dahestanicum Uspenskaja, 1931 † accepted as Miricardium dahestanicum (Uspenskaja, 1931) † (unaccepted > superseded combination)
- Variety Cardium dahestanicum var. parvulus Uspenskaja, 1931 † accepted as Miricardium dahestanicum (Uspenskaja, 1931) † (subjective synonym)
- Species Cardium dalli Heilprin, 1887 † accepted as Acrosterigma dalli (Heilprin, 1887) † (unaccepted > superseded combination)
- Species Cardium danatense A. A. Ali-Zade, 1967 † accepted as Cerastoderma dombra (Andrusov, 1902) † (unaccepted > junior subjective synonym)
- Species Cardium danovi V. P. Kolesnikov, 1929 † accepted as Limnocardium danovi (V. P. Kolesnikov, 1929) † (unaccepted > superseded combination)
- Species Cardium danubianum Mayer, 1866 † accepted as Procardium danubianum (Mayer, 1866) † (unaccepted > superseded combination)
- Species Cardium darwini Mayer, 1866 accepted as Cardium indicum Lamarck, 1819 (unnecessary replacement name)
- Species Cardium davidaschvilii V. P. Kolesnikov, 1950 † accepted as Cerastoderma davidaschvilii (V. P. Kolesnikov, 1950) † (unaccepted > superseded combination)
- Species Cardium daviesi Dey, 1962 † accepted as Freneixicardia daviesi (Dey, 1962) † (unaccepted > superseded combination)
- Species Cardium dawsoni W. Stimpson, 1862 † accepted as Cardium ciliatum O. Fabricius, 1780 (unaccepted > junior subjective synonym, uncertain synonym)
- Species Cardium decorticatum S. V. Wood, 1853 † accepted as Laevicardium decorticatum (S. V. Wood, 1853) † (unaccepted > superseded combination)
- Species Cardium decorum T. Fuchs, 1870 † accepted as Lymnocardium decorum (T. Fuchs, 1870) † (unaccepted > superseded combination)
- Species Cardium decussatum Mantell, 1822 † accepted as Procardia decussata (Mantell, 1822) † (original combination)
- Species Cardium deformis A. A. Ali-Zade & Petrova, 1969 † accepted as Miricardium dahestanicum (Uspenskaja, 1931) † (tentative junior subjective synonym)
- Species Cardium degrangei Cossmann, 1896 † accepted as Plagiocardium degrangei (Cossmann, 1896) † (unaccepted > superseded combination)
- Species Cardium delicatulum E. A. Smith, 1915 accepted as Dallocardia delicatula (E. A. Smith, 1915) (unaccepted > superseded combination)
- Species Cardium delpeutum McGill, 1964 accepted as Cardium indicum Lamarck, 1819 (unaccepted > junior subjective synonym)
- Species Cardium denisevici A. A. Ali-Zade, 1967 † accepted as Cerastoderma dombra vogdti (Andrusov, 1902) † (unaccepted > junior subjective synonym)
- Species Cardium depressum Deshayes, 1838 † accepted as Oraphocardium depressum (Deshayes, 1838) † (unaccepted > superseded combination)
- Species Cardium descriptum Volkova, 1953 † accepted as Obsoletiformes descriptus (Volkova, 1953) † (unaccepted > superseded combination)
- Species Cardium desertum Stoliczka, 1862 † accepted as Pontalmyra deserta (Stoliczka, 1862) † (unaccepted > superseded combination)
- Species Cardium deshayesianum Bianconi, 1856 accepted as Fulvia fragilis (Forsskål, 1775) (unaccepted > junior subjective synonym)
- Species Cardium deshayesii Payraudeau, 1826 accepted as Acanthocardia deshayesii (Payraudeau, 1826) (unaccepted > superseded combination)
- Species Cardium desperatum V. P. Kolesnikov, 1929 † accepted as Obsoletiformes desperatus (V. P. Kolesnikov, 1929) † (unaccepted > superseded combination)
- Species Cardium diluvianum Lamarck, 1819 † accepted as Procardium diluvianum (Lamarck, 1819) † (unaccepted > superseded combination)
- Species Cardium dimidiatum Goldfuss, 1841 † accepted as Mytilus dimidiatus (Goldfuss, 1841) † (unaccepted > superseded combination)
- Species Cardium dingdense Lehmann, 1885 † accepted as Habecardium dingdense (Lehmann, 1885) † (unaccepted > superseded combination)
- Species Cardium dionaeum Broderip & G. B. Sowerby I, 1829 accepted as Corculum dionaeum (Broderip & G. B. Sowerby I, 1829) (unaccepted > superseded combination)
- Species Cardium discors Lamarck, 1805 † accepted as Cardium parisiense A. d'Orbigny, 1850 † (unaccepted > junior homonym, junior homonym of Cardium discors Montagu, 1803)
- Species Cardium discors Montagu, 1803 accepted as Tellina pisiformis Linnaeus, 1758 (unaccepted > junior subjective synonym)
- Species Cardium discrepans Basterot, 1825 † accepted as Divaricardium discrepans (Basterot, 1825) † (unaccepted > superseded combination)
- Species Cardium dissimile J. De C. Sowerby, 1827 † accepted as Protocardia dissimilis (J. De C. Sowerby, 1827) † (unaccepted > superseded combination)
- Species Cardium diversum Conrad, 1847 † accepted as Nemocardium diversum (Conrad, 1847) † (unaccepted > superseded combination)
- Species Cardium djanelidzei Kharatishvili, 1952 † accepted as Fragum djanelidzei (Kharatishvili, 1952) † (unaccepted > superseded combination)
- Species Cardium dolichum Suter, 1917 † accepted as Procardia dolicha (Suter, 1917) † (superseded combination)
- Species Cardium dombra Andrusov, 1902 † accepted as Cerastoderma dombra (Andrusov, 1902) † (unaccepted > superseded combination)
- Variety Cardium dombra var. angusta Andrusov, 1902 † accepted as Cerastoderma dombra (Andrusov, 1902) † (subjective synonym)
- Variety Cardium dombra var. attenuata Andrusov, 1902 † accepted as Cerastoderma dombra (Andrusov, 1902) † (subjective synonym)
- Variety Cardium dombra var. elongata Andrusov, 1902 † accepted as Cerastoderma dombra (Andrusov, 1902) † (subjective synonym)
- Variety Cardium dombra var. magna K. A. Ali-Zade, 1954 † accepted as Cerastoderma dombra (Andrusov, 1902) † (unaccepted > junior subjective synonym)
- Species Cardium donaciforme Bruguière, 1789 accepted as Hemidonax donaciformis (Bruguière, 1789) (original combination)
- Species Cardium dongingii Sinzov, 1876 † accepted as Planacardium dongingii (Sinzov, 1876) † (unaccepted > superseded combination)
- Subspecies Cardium dongingii praeformis A. Papp, 1954 † accepted as Planacardium dongingii praeforme (A. Papp, 1954) † (unaccepted > superseded combination)
- Species Cardium duboisi Mayer, 1856 † accepted as Panticapaea duboisi (Mayer, 1856) † (unaccepted > superseded combination)
- Species Cardium duboisi Mikhailovski, 1903 † accepted as Acanthocardia brocchii (Mayer, 1866) † (unaccepted > junior homonym)
- Species Cardium dulce Deshayes, 1863 accepted as Fulvia (Fulvia) dulcis (Deshayes, 1863) (unaccepted > superseded combination)
- Species Cardium dulcinea Dall, 1916 accepted as Cardium procerum G. B. Sowerby I, 1833 (unaccepted > junior subjective synonym)
- Species Cardium dupinianum A. d'Orbigny, 1844 † accepted as Integricardium dupinianum (A. d'Orbigny, 1844) †
- Species Cardium dupuchense Reeve, 1845 accepted as Vasticardium dupuchense (Reeve, 1845) (unaccepted > superseded combination)
- Species Cardium duregnei Monterosato, 1891 accepted as Acanthocardia echinata (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Species Cardium dyoniseum Buvignier, 1852 † accepted as Protocardia dyonisea (Buvignier, 1852) †
- Species Cardium ebaranum Yokoyama, 1927 † accepted as Afrocardium richardi (Audouin, 1826) (unaccepted > junior subjective synonym)
- Species Cardium ebersini V. P. Kolesnikov, 1950 † accepted as Cerastoderma dombra (Andrusov, 1902) † (unaccepted > junior subjective synonym)
- Species Cardium eburniferum Guppy, 1869 accepted as Trachycardium isocardia (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Species Cardium echinatum Bruguière, 1789 accepted as Cardium spinosum [Lightfoot], 1786 (unaccepted > junior homonym, non Cardium echinatum Linnaeus, 1758)
- Species Cardium echinatum Linnaeus, 1758 accepted as Acanthocardia echinata (Linnaeus, 1758) (unaccepted > superseded combination)
- Variety Cardium echinatum var. expansa Jeffreys, 1864 accepted as Acanthocardia echinata (Linnaeus, 1758)
- Variety Cardium echinatum var. ovata Jeffreys, 1864 accepted as Acanthocardia echinata (Linnaeus, 1758)
- Species Cardium edentula Montagu, 1808 accepted as Cardium edentulum Montagu, 1808 (unaccepted > junior subjective synonym)
- Species Cardium edentulum Deshayes, 1838 † accepted as Pteradacna subedentula (A. d'Orbigny, 1852) † (unaccepted > junior homonym, junior homonym of Cardium edentulum Montagu, 1808; Cardium subedentulum is a replacement name)
- Species Cardium edentulum Montagu, 1808 accepted as Cardium groenlandicum Mohr, 1786 (unaccepted > junior subjective synonym)
- Species Cardium edesma Almera & Bofill y Poch, 1894 † accepted as Euxinicardium edesma (Almera & Bofill y Poch, 1894) † (unaccepted > superseded combination)
- Species Cardium edule Linnaeus, 1758 accepted as Cerastoderma edule (Linnaeus, 1758) (unaccepted > superseded combination)
- Subspecies Cardium edule burchanae Girscher, 1938 † accepted as Cerastoderma edule (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Subspecies Cardium edule picolina Kaltenbach, 1943 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Variety Cardium edule var. altior Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Variety Cardium edule var. batesoni Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Cerastoderma edule (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Variety Cardium edule var. fulva Dautzenberg, 1890 accepted as Cerastoderma edule (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Variety Cardium edule var. intermedia Milaschewitsch, 1916 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Variety Cardium edule var. libenicense Brusina, 1870 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Variety Cardium edule var. loppensi Mars, 1951 accepted as Cerastoderma edule (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Variety Cardium edule var. maculata Dautzenberg, 1890 accepted as Cerastoderma edule (Linnaeus, 1758) (unaccepted > junior homonym, Invalid: junior homonym of Cardium maculatum Gmelin, 1791)
- Variety Cardium edule var. maeotica Milaschewitsch, 1908 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Variety Cardium edule var. magna Golubjatniknov, 1908 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior homonym, non Cardium magnum Linnaeus, 1758; nec Born, 1778)
- Variety Cardium edule var. major Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Cerastoderma edule (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Variety Cardium edule var. mareotica Pallary, 1912 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Variety Cardium edule var. nuciformis Milaschewitsch, 1916 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior homonym, non Cardium nuciforme A. d’Orbigny, 1850)
- Variety Cardium edule var. paludosa Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Variety Cardium edule var. picta Milaschewitsch, 1916 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Variety Cardium edule var. quadrata Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Variety Cardium edule var. regularis Pallary, 1900 accepted as Cerastoderma edule (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Variety Cardium edule var. umbonatum S. V. Wood, 1853 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior homonym, non Cardium umbonatum J. Sowerby, 1817)
- Variety Cardium edule var. carinulatum Almera & Bofill y Poch, 1894 † (uncertain > taxon inquirendum)
- Variety Cardium edule var. papiolensis Almera & Bofill y Poch, 1894 † (uncertain > taxon inquirendum)
- Variety Cardium edule var. rastellensis Fontannes, 1882 † (uncertain > taxon inquirendum)
- Species Cardium edwardsi Deshayes, 1858 † accepted as Nemocardium edwardsi (Deshayes, 1858) † (unaccepted > superseded combination)
- Species Cardium egmontianum Shuttleworth, 1856 accepted as Trachycardium (Trachycardium) egmontianum (Shuttleworth, 1856) (unaccepted > superseded combination)
- Species Cardium eichwaldi Reeve, 1845 accepted as Cerastoderma glaucum (Bruguière, 1789) (synonym)
- Species Cardium eichwaldi Krynicki, 1837 accepted as Didacna eichwaldi (Krynicki, 1837) (unaccepted > superseded combination, original combination)
- Species Cardium eichwaldii Reeve, 1845 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Species Cardium elatum G. B. Sowerby I, 1833 accepted as Laevicardium elatum (G. B. Sowerby I, 1833) (unaccepted > superseded combination)
- Species Cardium eldaricum V. P. Kolesnikov, 1950 † accepted as Cerastoderma dombra (Andrusov, 1902) † (unaccepted > junior subjective synonym)
- Species Cardium elegantis Steklov, 1955 † accepted as Replidacna elegantis (Steklov, 1955) † (unaccepted > superseded combination)
- Species Cardium elegantulum Uspenskaja, 1931 † accepted as Aktschagylocardium uspenskaiae (V. P. Kolesnikov, 1950) † (unaccepted > junior homonym, junior homonym of Cardium elegantulum Møller, 1842; Cardium uspenskaiae is a replacement name)
- Species Cardium elegantulum C. F. Roemer, 1849 † accepted as Liopistha elegantulata H. E. Vokes, 1956 † (unaccepted > junior homonym, junior homonym of Cardium elegantulum Møller, 1842; Liopistha elegantulata is a replacement name)
- Species Cardium elegantulum Møller, 1842 accepted as Goethemia elegantula (Møller, 1842) (unaccepted > superseded combination)
- Species Cardium elenense G. B. Sowerby II, 1840 accepted as Laevicardium elenense (G. B. Sowerby II, 1840) (unaccepted > superseded combination)
- Species Cardium elongatum Bruguière, 1789 accepted as Vasticardium elongatum (Bruguière, 1789) (unaccepted > superseded combination)
- Species Cardium elongatum Montagu, 1803 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior homonym, non Cardium elongatum Bruguière, 1789)
- Species Cardium elongatum J. Sowerby, 1815 † accepted as Conocardium elongatum (J. Sowerby, 1815) † (unaccepted > superseded combination)
- Species Cardium emarginatum Deshayes, 1829 † accepted as Byssocardium emarginatum (Deshayes, 1829) †
- Species Cardium emarginatum Deshayes, 1838 † accepted as Bosphoricardium aperturatum (Deshayes, 1853) † (unaccepted > junior homonym, junior homonym of Cardium emarginatum Deshayes, 1829; Cardium aperturatum is a replacement name)
- Species Cardium enode G. B. Sowerby II, 1840 accepted as Vasticardium elongatum enode (G. B. Sowerby II, 1840) (unaccepted > superseded combination)
- Species Cardium erinaceum Lamarck, 1819 accepted as Acanthocardia spinosa ([Lightfoot], 1786) (unaccepted > junior subjective synonym)
- Variety Cardium erinaceum var. alba Monterosato, 1872 accepted as Acanthocardia spinosa ([Lightfoot], 1786) (unaccepted > junior subjective synonym)
- Species Cardium erinaceus accepted as Cardium erinaceum Lamarck, 1819 (unaccepted > misspelling - incorrect subsequent spelling, lapsus calami)
- Species Cardium erugatum Tate, 1889 accepted as Microfragum erugatum (Tate, 1889) (unaccepted > superseded combination)
- Species Cardium euglyptum G. B. Sowerby III, 1914 accepted as Afrocardium richardi (Audouin, 1826) (unaccepted > junior subjective synonym)
- Species Cardium euroum A. A. Ali-Zade, 1967 † accepted as Avicardium subleve Cheltsov, 1965 † (tentative junior subjective synonym)
- Species Cardium euryti A. A. Ali-Zade, 1967 † accepted as Cerastoderma dombra (Andrusov, 1902) † (tentative junior subjective synonym)
- Species Cardium exasperatum G. B. Sowerby II, 1839 accepted as Frigidocardium exasperatum (G. B. Sowerby II, 1839) (unaccepted > superseded combination)
- Species Cardium exiguum Gmelin, 1791 accepted as Parvicardium exiguum (Gmelin, 1791) (unaccepted > superseded combination)
- Variety Cardium exiguum var. albina Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Parvicardium exiguum (Gmelin, 1791) (unaccepted > junior subjective synonym)
- Variety Cardium exiguum var. commutata Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Parvicardium exiguum (Gmelin, 1791) (unaccepted > junior subjective synonym)
- Variety Cardium exiguum var. flavida Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Parvicardium exiguum (Gmelin, 1791) (unaccepted > junior subjective synonym)
- Variety Cardium exiguum var. hirta Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Parvicardium exiguum (Gmelin, 1791) (unaccepted > junior subjective synonym)
- Variety Cardium exiguum var. scripta Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Parvicardium scriptum (Bucquoy, Dautzenberg & Dollfus, 1892) (unaccepted > superseded combination)
- Variety Cardium exiguum var. subquadrata Jeffreys, 1864 accepted as Parvicardium exiguum (Gmelin, 1791) (unaccepted > junior homonym, non Cardium subquadratum Evans & Shumard, 1857)
- Species Cardium exile Dunker, 1861 accepted as Parvicardium exiguum (Gmelin, 1791) (unaccepted > junior subjective synonym)
- Species Cardium exstriatulum Sacco, 1899 accepted as Pratulum pulchellum (J. E. Gray, 1843) (unaccepted > junior subjective synonym)
- Species Cardium fabricii Deshayes, 1855 accepted as Cardium groenlandicum Mohr, 1786 (unaccepted > junior subjective synonym, uncertain synonym)
- Species Cardium facetum Suter, 1917 † accepted as Glyptoactis faceta (Suter, 1917) † (superseded combination)
- Species Cardium fasciatum Montagu, 1808 accepted as Parvicardium pinnulatum (Conrad, 1831) (unaccepted > junior homonym, non Cardium fasciatum Gmelin, 1791)
- Variety Cardium fasciatum var. alba Jeffreys, 1864 accepted as Parvicardium pinnulatum (Conrad, 1831)
- Variety Cardium fasciatum var. globosa Jeffreys, 1864 accepted as Parvicardium pinnulatum (Conrad, 1831)
- Species Cardium fasciatum Gmelin, 1791 accepted as Acanthocardia tuberculata (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Species Cardium fasetum Zhizhchenko, 1936 † accepted as Cerastoderma arcellum bogatchevi (V. P. Kolesnikov, 1929) † (unaccepted > junior subjective synonym)
- Species Cardium fastosum Yokoyama, 1927 † accepted as Keenocardium fastosum (Yokoyama, 1927) † (unaccepted > superseded combination)
- Species Cardium fedrighinii Capellini, 1879 † accepted as Monodacna fedrighinii (Capellini, 1879) † (unaccepted > superseded combination)
- Species Cardium ferrugineum Brusina, 1874 † accepted as Lymnocardium (Budmania) ferrugineum (Brusina, 1874) † (unaccepted > superseded combination)
- Species Cardium ferruginosum Reeve, 1845 accepted as Trachycardium (Mexicardia) procerum (G. B. Sowerby I, 1833) (unaccepted > junior subjective synonym)
- Species Cardium festivum Deshayes, 1855 accepted as Microfragum festivum (Deshayes, 1855) (unaccepted > superseded combination)
- Species Cardium fimbriatum Lamarck, 1819 accepted as Cardium coronatum Spengler, 1799 (unaccepted > junior homonym, non Cardium fimbriatum W. Wood, 1815)
- Species Cardium fimbriatum W. Wood, 1815 accepted as Cardium coronatum Schröter, 1786 (unaccepted > junior subjective synonym)
- Species Cardium finitima Grishkevich, 1961 † accepted as Replidacna finitima (Grishkevich, 1961) † (unaccepted > superseded combination)
- Species Cardium fischerianum Doenging, 1852 † accepted as Obsoletiformes fischerianus (Doenging, 1852) † (unaccepted > superseded combination)
- Species Cardium fischeriformis A. Papp, 1954 † accepted as Obsoletiformes fischeriformis (A. Papp, 1954) † (unaccepted > superseded combination)
- Species Cardium fittoni A. d'Orbigny, 1845 † accepted as Plicatiformes fittoni (A. d'Orbigny, 1845) † (unaccepted > superseded combination)
- Subspecies Cardium fittoni fittoni A. d'Orbigny, 1845 † accepted as Plicatiformes fittoni fittoni (A. d'Orbigny, 1845) †
- Subspecies Cardium fittoni rustovense Sultanov, 1953 † accepted as Plicatiformes fittoni rustovensis (Sultanov, 1953) †
- Variety Cardium fittoni var. rustovensis Sultanov, 1953 † accepted as Plicatiformes fittoni rustovensis (Sultanov, 1953) † (unaccepted > superseded combination)
- Species Cardium flavum Linnaeus, 1758 accepted as Vasticardium flavum (Linnaeus, 1758) (unaccepted > superseded combination)
- Species Cardium flexuosum Gmelin, 1791 accepted as Acanthocardia echinata (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Species Cardium floridanum Heilprin, 1886 † accepted as Trachycardium egmontianum (Shuttleworth, 1856) (unaccepted > junior subjective synonym)
- Species Cardium formidolosum A. A. Ali-Zade, 1967 † accepted as Avicardium subleve Cheltsov, 1965 † (tentative junior subjective synonym)
- Species Cardium formosum Deshayes, 1858 † accepted as Loxocardium formosum (Deshayes, 1858) † (original combination)
- Species Cardium fornasinianum Bianconi, 1856 accepted as Fulvia fragilis (Forsskål, 1775) (unaccepted > junior subjective synonym)
- Species Cardium fornicatum A. A. Ali-Zade, 1967 † accepted as Cerastoderma siphonophorum (Andrusov, 1902) † (unaccepted > junior subjective synonym)
- Species Cardium fornicatum G. B. Sowerby II, 1840 accepted as Ctenocardia fornicata (G. B. Sowerby II, 1840) (unaccepted > superseded combination)
- Species Cardium foveolatum G. B. Sowerby II, 1840 sensu Reeve, 1845 accepted as Acrosterigma punctolineatum Healy & Lamprell, 1992 (unaccepted > misapplication)
- Species Cardium fragile Reeve, 1845 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior homonym, non Cardium fragile Forsskål in Niebuhr, 1775)
- Species Cardium fragile Forsskål, 1775 accepted as Fulvia fragilis (Forsskål, 1775) (unaccepted > superseded combination)
- Species Cardium fragosum A. A. Ali-Zade, 1967 † accepted as Cerastoderma davidaschvilii (V. P. Kolesnikov, 1950) † (unaccepted > junior subjective synonym)
- Species Cardium fragulinum Cossmann, 1896 † accepted as Cardium (Parvicardium) fragulinum Cossmann, 1896 † (unaccepted > superseded combination)
- Species Cardium fragum Linnaeus, 1758 accepted as Fragum fragum (Linnaeus, 1758) (unaccepted > superseded combination)
- Species Cardium fraterculus Deshayes, 1858 † accepted as Nemocardium fraterculus (Deshayes, 1858) † (unaccepted > superseded combination)
- Species Cardium fraternum Mayer, 1864 † accepted as Acrosterigma fraternum (Mayer, 1864) † (original combination)
- Species Cardium friabile Krauss, 1852 † accepted as Limnopagetia friabilis (Krauss, 1852) † (unaccepted > superseded combination)
- Species Cardium fucanum Dall, 1907 accepted as Keenocardium blandum (A. Gould, 1850) (unaccepted > junior subjective synonym)
- Species Cardium fucatum Spengler, 1799 accepted as Vasticardium flavum (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Species Cardium fuchsi Neumayr, 1875 † accepted as Lymnocardium fuchsi (Neumayr, 1875) † (unaccepted > superseded combination)
- Species Cardium fuchsii [sic] † accepted as Cardium fuchsi Capellini, 1873 † (unaccepted > misspelling - incorrect subsequent spelling)
- Species Cardium fugax Cossmann, 1886 † accepted as Parvicardium fugax (Cossmann, 1886) † (unaccepted > superseded combination)
- Species Cardium fultoni G. B. Sowerby III, 1916 accepted as Vasticardium fultoni (G. B. Sowerby III, 1916) (unaccepted > superseded combination)
- Species Cardium fusiformis Uspenskaja, 1931 † accepted as Aktschagylocardium trinacria (Andrusov, 1902) † (unaccepted > junior subjective synonym)
- Species Cardium gabbi Rémond, 1863 † accepted as Pseudocardium densata (Conrad, 1857) †
- Species Cardium gaditanum Gmelin, 1791 accepted as Glycymeris nummaria (Linnaeus, 1758) (dubious synonym)
- Species Cardium gallicum Mayer, 1866 † accepted as Habecardium gallicum (Mayer, 1866) † (unaccepted > superseded combination)
- Species Cardium gatuevi V. P. Kolesnikov, 1929 † accepted as Obsoletiformes gatuevi (V. P. Kolesnikov, 1929) † (unaccepted > superseded combination)
- Variety Cardium gatuevi var. pseudomichailovi V. P. Kolesnikov, 1929 † accepted as Obsoletiformes gatuevi pseudomichailovi (V. P. Kolesnikov, 1929) † (unaccepted > superseded combination)
- Species Cardium geranicum K. A. Ali-Zade, 1954 † accepted as Raricardium naftalanicum (K. A. Ali-Zade, 1932) † (tentative junior subjective synonym)
- Species Cardium ghergutai Jekelius, 1944 † accepted as Obsoletiformes ghergutai (Jekelius, 1944) † (unaccepted > superseded combination)
- Species Cardium gigas Defrance, 1817 † accepted as Habecardium gigas (Defrance, 1817) † (unaccepted > superseded combination)
- Species Cardium gilchristi G. B. Sowerby III, 1904 accepted as Microcardium gilchristi (G. B. Sowerby III, 1904) (unaccepted > superseded combination)
- Species Cardium girondicum Mayer, 1866 † accepted as Acanthocardia subserrigera (A. d'Orbigny, 1852) †
- Species Cardium glabratum Römer, 1869 accepted as Laevicardium pristis (Bory de Saint-Vincent, 1827) (unaccepted > junior subjective synonym)
- Species Cardium glaucum Bruguière, 1789 accepted as Cerastoderma glaucum (Bruguière, 1789) (original combination)
- Subspecies Cardium glaucum marsi F. Nordsieck, 1969 accepted as Cardium glaucum Bruguière, 1789 (unaccepted > junior subjective synonym)
- Variety Cardium glaucum var. crassa Coen, 1915 accepted as Cerastoderma glaucum (Bruguière, 1789) (synonym)
- Variety Cardium glaucum var. rectidens Coen, 1915 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Variety Cardium glaucum var. syrthica Coen, 1915 accepted as Cerastoderma glaucum (Bruguière, 1789) (synonym)
- Species Cardium glaucum Poiret, 1789 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior homonym, non Cardium glaucum Bruguière, 1789)
- Variety Cardium glaucum var. coeni Mars, 1951 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Species Cardium gleichenbergense A. Papp, 1954 † accepted as Replidacna nigra (Zhizhchenko, 1934) † (unaccepted > junior subjective synonym)
- Species Cardium golubiatnikovi Andrusov, 1905 † accepted as Plagiocardium golubiatnikovi (Andrusov, 1905) † (unaccepted > superseded combination)
- Species Cardium golubiatnikowi Volkova, 1962 † accepted as Plagiocardium golubiatnikovi (Andrusov, 1905) † (unaccepted > misspelling - incorrect original spelling)
- Species Cardium gossei Deshayes, 1855 accepted as Dallocardia muricata (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Species Cardium gourieffi Deshayes, 1838 † accepted as Pontalmyra gourieffi (Deshayes, 1838) † (unaccepted > superseded combination)
- Variety Cardium gourieffi var. minor R. Hoernes, 1874 † (uncertain > taxon inquirendum)
- Species Cardium gracile Rzehak, 1893 † accepted as Limnopagetia gracilis (Rzehak, 1893) † (unaccepted > superseded combination)
- Species Cardium gracile Pusch, 1836 † accepted as Plicatiformes plicatus (Eichwald, 1830) † (unaccepted > junior subjective synonym)
- Variety Cardium gracile var. kasinkense V. P. Kolesnikov, 1929 † accepted as Plicatiformes plicatus (Eichwald, 1830) † (unaccepted > junior subjective synonym)
- Species Cardium gracilicostatum Jekelius, 1944 † accepted as Replidacna gracilicostata (Jekelius, 1944) † (unaccepted > superseded combination)
- Subspecies Cardium gracilicostatum oblongum A. A. Ali-Zade & Ribina, 1974 † (uncertain > taxon inquirendum)
- Species Cardium graniferum Broderip & G. B. Sowerby I, 1829 accepted as Trigoniocardia granifera (Broderip & G. B. Sowerby I, 1829) (unaccepted > superseded combination)
- Species Cardium granulosum Lamarck, 1805 † accepted as Plagiocardium granulosum (Lamarck, 1805) † (unaccepted > superseded combination, original combination)
- Species Cardium grateloupi Mayer, 1866 † accepted as Cardium hoernesianum M. Hörnes, 1861 † (unaccepted > junior subjective synonym, non Cardium grateloupi Michelotti, 1839)
- Species Cardium gratiosum Deshayes, 1855 accepted as Vasticardium flavum (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Species Cardium gratum A. A. Ali-Zade, 1967 † accepted as Miricardium dahestanicum (Uspenskaja, 1931) † (unaccepted > junior homonym, junior homonym of Cardium gratum Defrance, 1829, and tentative junior subjective synonym)
- Species Cardium gratum Defrance, 1829 † accepted as Orthocardium gratum (Defrance, 1829) † (unaccepted > superseded combination)
- Species Cardium greenoughi d'Archiac & Haime, 1854 † accepted as Maoricardium greenoughi (d'Archiac & Haime, 1854) † (unaccepted > superseded combination)
- Species Cardium greyi F. W. Hutton, 1873 † accepted as Hedecardium (Titanocardium) greyi (F. W. Hutton, 1873) † (superseded combination)
- Species Cardium groenlandicum Chemnitz, 1782 accepted as Cardium groenlandicum Mohr, 1786 (unaccepted > unavailable name, published in a work rejected by ICZN direction 1; available from Mohr, 1786)
- Species Cardium groenlandicum Mohr, 1786 accepted as Serripes (Serripes) groenlandicus (Mohr, 1786) (unaccepted > superseded combination)
- Subspecies Cardium groenlandicum unciangulare Khomenko, 1931 † accepted as Cardium groenlandicum Mohr, 1786 (unaccepted > junior subjective synonym)
- Species Cardium guanacastense Hertlein & A. M. Strong, 1947 accepted as Americardia planicostata (G. B. Sowerby I, 1833) (unnecessary replacement name; synonym)
- Species Cardium gubkini K. A. Ali-Zade, 1932 † accepted as Aktschagylocardium tchandyricum (Uspenskaja, 1931) † (unaccepted > junior subjective synonym)
- Species Cardium gudexi Laws, 1933 † accepted as Maoricardium gudexi (Laws, 1933) † (superseded combination)
- Species Cardium guichardi Bernardi, 1857 accepted as Lunulicardia hemicardium (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Species Cardium guppyi Thiele, 1910 accepted as Americardia guppyi (Thiele, 1910) (unaccepted > superseded combination)
- Species Cardium hantkeni T. Fuchs, 1870 † accepted as Lymnocardium hantkeni (T. Fuchs, 1870) † (unaccepted > superseded combination)
- Species Cardium hantoniense Koenen, 1867 † accepted as Nemocardium hantoniense (Koenen, 1867) † (unaccepted > superseded combination)
- Species Cardium harpa Münster, 1837 † accepted as Flabelliphoria harpa (Münster, 1837) † (unaccepted > superseded combination)
- Species Cardium hastiloides K. A. Ali-Zade, 1941 † accepted as Aktschagylocardium uspenskaiae (V. P. Kolesnikov, 1950) †
- Species Cardium hatchetigbeense Aldrich, 1886 † accepted as Schedocardia hatchetigbeensis (Aldrich, 1886) † (unaccepted > superseded combination)
- Species Cardium haueri M. Hörnes, 1861 † accepted as Lymnocardium haueri (M. Hörnes, 1861) † (unaccepted > superseded combination)
- Species Cardium hauniense Høpner Petersen & P. Russell, 1971 accepted as Parvicardium hauniense (Høpner Petersen & P. Russell, 1971) (unaccepted > superseded combination)
- Species Cardium hayesii W. Stimpson, 1864 accepted as Cardium ciliatum O. Fabricius, 1780 (unaccepted > junior subjective synonym)
- Species Cardium heeri Mayer-Eymar, 1859 † accepted as Parvicardium heeri (Mayer-Eymar, 1859) † (unaccepted > superseded combination)
- Species Cardium helleri Brusina, 1865 accepted as Parvicardium exiguum (Gmelin, 1791) (unaccepted > junior subjective synonym)
- Species Cardium hemicardium Linnaeus, 1758 accepted as Lunulicardia hemicardium (Linnaeus, 1758) (unaccepted > superseded combination)
- Species Cardium hemimeris Tate, 1887 † accepted as Pratulum hemimeris (Tate, 1887) † (unaccepted > superseded combination)
- Species Cardium heteroclitum Lamarck, 1805 † accepted as Choniocardia heteroclita (Lamarck, 1805) † (unaccepted > superseded combination)
- Species Cardium hians Brocchi, 1814 † accepted as Cardium diluvianum Lamarck, 1819 † (unaccepted > junior homonym, non Cardium hians Spengler, 1799)
- Species Cardium hians Spengler, 1799 accepted as Cardium apertum Bruguière, 1789 (unaccepted > junior objective synonym)
- Species Cardium hiatus Meuschen, 1787 accepted as Papyridea soleniformis (Bruguière, 1789) (unaccepted > unavailable name, rejected work: non-binominal)
- Species Cardium hillanum J. Sowerby, 1813 † accepted as Protocardia hillana (J. Sowerby, 1813) †
- Species Cardium hirsutum Bronn, 1831 † accepted as Afrocardium hirsutum (Bronn, 1831) † (unaccepted > superseded combination)
- Species Cardium hispidiforme Davitashvili, 1932 † accepted as Parvicardium michelottii (Deshayes, 1850) † (unaccepted > junior subjective synonym)
- Species Cardium hispidum Eichwald, 1830 † accepted as Papillicardium papillosum (Poli, 1791) (unaccepted > junior subjective synonym)
- Species Cardium hiulcum Reeve, 1845 accepted as Papyridea hiulca (Reeve, 1845) (unaccepted > superseded combination, original combination)
- Species Cardium holubicense Hilber, 1882 † accepted as Parvicardium holubicense (Hilber, 1882) † (unaccepted > superseded combination)
- Species Cardium honi Nyst & Le Hon, 1862 † accepted as Nemocardium honi (Nyst & Le Hon, 1862) † (unaccepted > superseded combination)
- Species Cardium hornesi Deshayes, 1858 † accepted as Nemocardium hornesi (Deshayes, 1858) † (unaccepted > superseded combination)
- Species Cardium hoshmensilicum Uspenskaja, 1931 † accepted as Avicardium nikitini (Andrusov, 1902) † (unaccepted > junior subjective synonym)
- Variety Cardium hoshmensilicum var. feminescens Uspenskaja, 1931 † accepted as Avicardium feminescens (Uspenskaja, 1931) † (superseded rank and combination)
- Species Cardium hudsoniense Deshayes, 1855 accepted as Parvicardium pinnulatum (Conrad, 1831) (unaccepted > junior subjective synonym)
- Species Cardium humanum Linnaeus, 1758 accepted as Glossus humanus (Linnaeus, 1758)
- Species Cardium humanum Römer, 1869 accepted as Cardium cardissa Linnaeus, 1758 (unaccepted > junior subjective synonym)
- Species Cardium hungaricum M. Hörnes, 1861 † accepted as Lymnocardium hungaricum (M. Hörnes, 1861) † (unaccepted > superseded combination)
- Species Cardium hungerfordi G. B. Sowerby III, 1901 accepted as Fulvia hungerfordi (G. B. Sowerby III, 1901) (unaccepted > superseded combination)
- Subspecies Cardium hungerfordi stigmaticum Pilsbry, 1904 accepted as Fulvia (Laevifulvia) undatopicta (Pilsbry, 1904) (unaccepted > junior subjective synonym)
- Subspecies Cardium hungerfordi undatopictum Pilsbry, 1904 accepted as Fulvia (Laevifulvia) undatopicta (Pilsbry, 1904) (unaccepted > superseded combination)
- Species Cardium huoti Deshayes, 1857 † accepted as Cardium subplanicostatum A. d'Orbigny, 1852 † (unaccepted > junior objective synonym)
- Species Cardium hybridum Deshayes, 1829 † accepted as Orthocardium hybridum (Deshayes, 1829) † (unaccepted > superseded combination)
- Species Cardium hyrcanicum A. A. Ali-Zade, 1967 † accepted as Cerastoderma altum (Cheltsov, 1965) † (tentative junior subjective synonym)
- Species Cardium hystrix Reeve, 1844 accepted as Ctenocardia virgo (Reeve, 1845) (unaccepted > junior homonym, non Cardium hystrix Lightfoot, 1786; Fragum symbolicum Iredale, 1929, is a replacement name)
- Species Cardium hystrix [Lightfoot], 1786 accepted as Acanthocardia echinata (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Species Cardium icari A. A. Ali-Zade, 1967 † accepted as Cerastoderma altum (Cheltsov, 1965) † (unaccepted > junior subjective synonym)
- Species Cardium ignotum A. A. Ali-Zade, 1967 † accepted as Raricardium konjuschevski (K. A. Ali-Zade, 1932) † (unaccepted > junior subjective synonym)
- Species Cardium imago A. A. Ali-Zade, 1967 † accepted as Miricardium alexinum (Cheltsov, 1964) † (unaccepted > junior subjective synonym)
- Species Cardium imbricatum Born, 1778 accepted as Fragum fragum (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Species Cardium imbricatum G. B. Sowerby II, 1840 accepted as Ctenocardia virgo (Reeve, 1845) (unaccepted > junior homonym, non Cardium imbricatum Born, 1778; Fragum perornatum Iredale, 1929, is a replacement name)
- Species Cardium impar Zhizhchenko, 1936 † accepted as Acanthocardia centumpania (Andrusov, 1911) † (unaccepted > junior subjective synonym)
- Species Cardium impeditum Deshayes, 1858 † accepted as Loxocardium impeditum (Deshayes, 1858) † (unaccepted > superseded combination)
- Species Cardium impolitum G. B. Sowerby II, 1834 accepted as Acrosterigma impolitum (G. B. Sowerby II, 1834) (unaccepted > superseded combination)
- Species Cardium impressum Leymerie, 1842 † accepted as Protocardia impressa (Leymerie, 1842) † (unaccepted > superseded combination, invalid: junior homonym of Cardium impressum [Lightfoot], 1786)
- Species Cardium impressum [Lightfoot], 1786 accepted as Corculum impressum ([Lightfoot], 1786) (unaccepted > superseded combination)
- Species Cardium inaspectum A. A. Ali-Zade, 1967 † accepted as Cerastoderma altum (Cheltsov, 1965) † (unaccepted > junior subjective synonym)
- Species Cardium incarnatum Reeve, 1844 accepted as Vepricardium incarnatum (Reeve, 1844) (unaccepted > superseded combination)
- Species Cardium incertum Deshayes, 1838 † accepted as Pontalmyra incerta (Deshayes, 1838) † (unaccepted > superseded combination)
- Species Cardium inconspicuum Guppy, 1866 † accepted as Cardium (Trachycardium) inconspicuum Guppy, 1866 † (unaccepted > superseded combination)
- Species Cardium incurvatum V. P. Kolesnikov, 1929 † accepted as Obsoletiformes incurvatus (V. P. Kolesnikov, 1929) † (unaccepted > superseded combination)
- Species Cardium indicum Lamarck, 1819 accepted as Procardium indicum (Lamarck, 1819) (unaccepted > superseded combination)
- Species Cardium induratum Zhizhchenko, 1936 † accepted as Parvicardium michelottii (Deshayes, 1850) † (unaccepted > junior subjective synonym)
- Species Cardium infantule Nomura & Zinbo, 1934 † accepted as Afrocardium exochum (Melvill, 1907) (unaccepted > junior subjective synonym)
- Species Cardium inflatum Sinzov, 1875 † accepted as Aviculocardium inflatum (Sinzov, 1875) † (unaccepted > superseded combination)
- Variety Cardium inflatum var. aviculaeformis V. P. Kolesnikov, 1929 † accepted as Aviculocardium inflatum (Sinzov, 1875) † (unaccepted > junior subjective synonym)
- Species Cardium ingratum Deshayes, 1858 † accepted as Loxocardium ingratum (Deshayes, 1858) † (unaccepted > superseded combination)
- Species Cardium ingratum V. P. Kolesnikov, 1929 † accepted as Obsoletiformes obsoletus ingratus (V. P. Kolesnikov, 1929) † (unaccepted > superseded combination)
- Variety Cardium ingratum var. firma V. P. Kolesnikov, 1929 † (uncertain > taxon inquirendum)
- Variety Cardium ingratum var. perfida V. P. Kolesnikov, 1929 † (uncertain > taxon inquirendum)
- Species Cardium ingustatum A. A. Ali-Zade & Kabakova, 1967 † accepted as Miricardium caracutum (Uspenskaja, 1931) † (unaccepted > junior subjective synonym)
- Species Cardium inopinatum Grishkevich, 1961 † accepted as Replidacna inopinata (Grishkevich, 1961) † (unaccepted > superseded combination)
- Species Cardium insperatum A. A. Ali-Zade, 1967 † accepted as Miricardium dahestanicum (Uspenskaja, 1931) † (tentative junior subjective synonym)
- Species Cardium intermedium (Eichwald, 1841) † accepted as Turcmena intermedia (Eichwald, 1841) † (unaccepted > superseded combination)
- Variety Cardium intermedium var. pluricostata Sinzov, 1912 † accepted as Turcmena intermedia (Eichwald, 1841) † (unaccepted > junior subjective synonym)
- Species Cardium interruptum S. V. Wood, 1853 † accepted as Cardium ciliatum O. Fabricius, 1780 (unaccepted > junior homonym, non Cardium interruptum d'Orbigny, 1850)
- Species Cardium intextum Münster, 1837 † accepted as Protocardia intexta (Münster, 1837) †
- Species Cardium inversum Lamarck, 1819 accepted as Cardium cardissa Linnaeus, 1758 (unaccepted > junior subjective synonym)
- Species Cardium invidiosum A. A. Ali-Zade, 1967 † accepted as Cerastoderma dombra (Andrusov, 1902) † (tentative junior subjective synonym)
- Species Cardium iphiti A. A. Ali-Zade, 1967 † accepted as Miricardium dahestanicum (Uspenskaja, 1931) † (tentative junior subjective synonym)
- Species Cardium irregulare Eichwald, 1830 † accepted as Obsoletiformes irregularis (Eichwald, 1830) † (unaccepted > superseded combination)
- Species Cardium irrepertum A. A. Ali-Zade, 1967 † accepted as Cerastoderma siphonophorum (Andrusov, 1902) † (unaccepted > junior subjective synonym)
- Species Cardium irrisor Uspenskaja, 1931 † accepted as Avicardium mainacaricum (Andrusov, 1905) † (unaccepted > junior subjective synonym)
- Species Cardium islandicum Chemnitz, 1782 accepted as Cardium islandicum Bruguière, 1789 (unaccepted > unavailable name, published in a work rejected by ICZN direction 1)
- Species Cardium islandicum Bruguière, 1789 accepted as Cardium ciliatum O. Fabricius, 1780 (unaccepted > junior subjective synonym)
- Species Cardium isocardia Linnaeus, 1758 accepted as Trachycardium isocardia (Linnaeus, 1758) (unaccepted > superseded combination)
- Species Cardium isthmicum Issel, 1869 accepted as Cerastoderma glaucum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Species Cardium janoscheki A. Papp, 1954 † accepted as Replidacna janoscheki (A. Papp, 1954) † (unaccepted > superseded combination)
- Species Cardium janusi A. A. Ali-Zade, 1967 † accepted as Cerastoderma siphonophorum (Andrusov, 1902) † (unaccepted > junior subjective synonym)
- Species Cardium japonicum Dunker, 1860 accepted as Fulvia (Fulvia) mutica (Reeve, 1844) (unaccepted > junior subjective synonym)
- Species Cardium jasoni A. A. Ali-Zade & Baba-Zade, 1967 † accepted as Cerastoderma davidaschvilii (V. P. Kolesnikov, 1950) † (tentative junior subjective synonym)
- Species Cardium jekechanensis A. A. Ali-Zade & Baba-Zade, 1969 † accepted as Miricardium caracutum (Uspenskaja, 1931) † (tentative junior subjective synonym)
- Species Cardium jucundum A. A. Ali-Zade, 1967 † accepted as Miricardium dahestanicum (Uspenskaja, 1931) † (tentative junior subjective synonym)
- Species Cardium jumudicum Uspenskaja, 1931 † accepted as Miricardium dahestanicum (Uspenskaja, 1931) † (subjective synonym)
- Species Cardium junoniae Lamarck, 1819 accepted as Corculum impressum ([Lightfoot], 1786) (unaccepted > junior subjective synonym)
- Species Cardium kaiparaensis P. Marshall, 1918 † accepted as Glyptoactis (Fasciculicardia) subintermedia (Suter, 1917) † (junior subjective synonym)
- Species Cardium kalamantanum A. Adams & Reeve, 1850 accepted as Lyrocardium lyratum (G. B. Sowerby II, 1840) (unaccepted > junior subjective synonym)
- Species Cardium kambai A. A. Ali-Zade, 1967 † accepted as Avicardium subleve Cheltsov, 1965 † (tentative junior subjective synonym)
- Species Cardium kamishense Uspenskaja, 1931 † accepted as Avicardium kamishense (Uspenskaja, 1931) † (unaccepted > superseded combination)
- Species Cardium kansasense Meek, 1871 † accepted as Pleuriocardia kansasense (Meek, 1871) † (unaccepted > superseded combination)
- Species Cardium karabugasicum Sidorova, 1961 † accepted as Obsoletiformes karabugasicus (Sidorova, 1961) † (unaccepted > superseded combination)
- Species Cardium karagiense Sidorova, 1961 † accepted as Obsoletiformes karagiensis (Sidorova, 1961) † (unaccepted > superseded combination)
- Species Cardium karelini Andrusov, 1902 † accepted as Cerastoderma karelini (Andrusov, 1902) † (unaccepted > superseded combination)
- Species Cardium karreri T. Fuchs, 1873 † accepted as Lymnocardium karreri (T. Fuchs, 1873) † (unaccepted > superseded combination)
- Species Cardium kasinkense V. P. Kolesnikov, 1929 † accepted as Plicatiformes plicatus (Eichwald, 1830) † (unaccepted > junior subjective synonym)
- Species Cardium kaundense Sidorova, 1961 † accepted as Obsoletiformes kaundensis (Sidorova, 1961) † (unaccepted > superseded combination)
- Species Cardium kazanbulagense A. A. Ali-Zade & Kabakova, 1967 † accepted as Avicardium kazanbulagense (A. A. Ali-Zade & Kabakova, 1967) † (unaccepted > superseded combination)
- Species Cardium kazancekense A. A. Ali-Zade, 1967 † accepted as Miricardium dahestanicum (Uspenskaja, 1931) † (tentative junior subjective synonym)
- Species Cardium kenyanum L. R. Cox, 1930 † accepted as Vasticardium kenyanum (L. R. Cox, 1930) † (unaccepted > superseded combination)
- Species Cardium kerkentchicum A. A. Ali-Zade & Petrova, 1969 † accepted as Raricardium konjuschevski (K. A. Ali-Zade, 1932) † (tentative junior subjective synonym)
- Species Cardium kishinevense V. P. Kolesnikov, 1929 † accepted as Obsoletiformes kishinevensis (V. P. Kolesnikov, 1929) † (unaccepted > superseded combination)
- Species Cardium kobelti Maltzan, 1885 accepted as Europicardium serrulatum (Deshayes, 1855) (unaccepted > junior subjective synonym)
- Species Cardium kochi O. Semper, 1861 † accepted as Parvicardium kochi (O. Semper, 1861) † (unaccepted > superseded combination)
- Species Cardium kolenatii Rzehak, 1893 † accepted as Limnopagetia ammoni (Rzehak, 1893) † (subjective synonym)
- Species Cardium kolesnikovi Davitashvili, 1932 † accepted as Obsoletiforma beaumontiana ("A. d'Orbigny, 1844") † (unaccepted > junior subjective synonym)
- Species Cardium konjuschevski K. A. Ali-Zade, 1932 † accepted as Raricardium konjuschevski (K. A. Ali-Zade, 1932) † (unaccepted > superseded combination)
- Species Cardium konjuschewskii [sic] † accepted as Raricardium konjuschevski (K. A. Ali-Zade, 1932) † (unaccepted > misspelling - incorrect subsequent spelling)
- Species Cardium konschini Andrusov, 1902 † accepted as Cerastoderma konschini (Andrusov, 1902) † (unaccepted > superseded combination)
- Species Cardium kraussi Mayer, 1876 † accepted as Limnopagetia kraussi (Mayer, 1876) † (unaccepted > superseded combination)
- Species Cardium kubanicum Zhizhchenko, 1936 † accepted as Parvicardium kubanicum (Zhizhchenko, 1936) † (unaccepted > superseded combination)
- Species Cardium kuebeckii Hauer, 1847 † accepted as Fragum kuebeckii (Hauer, 1847) † (unaccepted > superseded combination)
- Species Cardium kumli Uspenskaja, 1931 † accepted as Miricardium dahestanicum (Uspenskaja, 1931) † (subjective synonym)
- Species Cardium kumuchicum Andrusov, 1902 † accepted as Cerastoderma dombra (Andrusov, 1902) † (subjective synonym)
- Species Cardium kupradzei Kharatishvili, 1952 † accepted as Acanthocardia kupradzei (Kharatishvili, 1952) † (unaccepted > superseded combination)
- Species Cardium kurendagense A. A. Ali-Zade, 1967 † accepted as Miricardium dahestanicum (Uspenskaja, 1931) † (tentative junior subjective synonym)
- Species Cardium lacunosum Reeve, 1845 accepted as Vasticardium assimile lacunosum (Reeve, 1845) (unaccepted > superseded combination)
- Species Cardium laevigatoloweni V. P. Kolesnikov, 1929 † accepted as Kubanocardium laevigatoloweni (V. P. Kolesnikov, 1929) † (unaccepted > superseded combination)
- Subspecies Cardium laevigatoloweni aculeatum A. A. Ali-Zade & Ribina, 1974 † (uncertain > taxon inquirendum)
- Species Cardium laevigatum Linnaeus, 1758 accepted as Fulvia laevigata (Linnaeus, 1758) (unaccepted > superseded combination)
- Species Cardium laeviusculum Capellini, 1879 † accepted as Lymnocardium laeviusculum (Capellini, 1879) † (unaccepted > superseded combination)
- Species Cardium lamarcki Reeve, 1845 accepted as Cardium lamarckii Reeve, 1845 (unaccepted > misspelling - incorrect subsequent spelling)
- Species Cardium lamarckii Reeve, 1845 accepted as Cerastoderma lamarcki (Reeve, 1845) (unaccepted > superseded combination)
- Species Cardium lamarckii A. d'Orbigny, 1846 accepted as Cardium brasilianum Lamarck, 1819 (unaccepted > junior homonym, non Cardium lamarckii Reeve, 1845)
- Species Cardium lamellatum Spengler, 1799 accepted as Vepricardium asiaticum (Bruguière, 1789) (unaccepted > junior subjective synonym)
- Species Cardium laperousii Deshayes, 1839 accepted as Serripes (Serripes) laperousii (Deshayes, 1839) (unaccepted > superseded combination)
- Species Cardium laqueatum Conrad, 1838 † accepted as Cerastoderma laqueatum (Conrad, 1838) † (unaccepted > superseded combination)
- Species Cardium laticostatum Cheltsov, 1965 † accepted as Cerastoderma karelini (Andrusov, 1902) † (unaccepted > junior subjective synonym)
- Species Cardium laticostatum G. B. Sowerby I, 1833 accepted as Cardium procerum G. B. Sowerby I, 1833 (unaccepted > junior subjective synonym)
- Species Cardium laticostatum Mayer-Eymar, 1898 † accepted as Cardium paucicostatum G. B. Sowerby II, 1834 (unaccepted > junior homonym, non Cardium laticostatum G. B. Sowerby I, 1833)
- Species Cardium latisulcum Münster, 1837 † accepted as Plicatiformes latisulcus (Münster, 1837) † (unaccepted > superseded combination)
- Subspecies Cardium latisulcum jammense Hilber, 1891 † accepted as Plicatiformes latisulcus jammensis (Hilber, 1891) †
- Subspecies Cardium latisulcum latisulcum Hilber, 1891 † accepted as Plicatiformes latisulcus latisulcus (Münster, 1837) †
- Subspecies Cardium latisulcum nexingense A. Papp, 1954 † accepted as Plicatiformes latisulcus nexingensis (A. Papp, 1954) † (unaccepted > superseded combination)
- Species Cardium latum A. A. Ali-Zade, 1967 † accepted as Cerastoderma davidaschvilii (V. P. Kolesnikov, 1950) † (tentative junior subjective synonym)
- Species Cardium latum Born, 1778 accepted as Papyridea lata (Born, 1778) (unaccepted > superseded combination, original combination)
- Species Cardium lavrani Fischer-Piette, 1977 accepted as Cardium turtoni G. B. Sowerby III, 1894 (synonym)
- Species Cardium lawley Capellini, 1880 † accepted as Lymnocardium lawley (Capellini, 1880) † (unaccepted > superseded combination)
- Species Cardium laxum Dall, 1901 accepted as Trachycardium (Trachycardium) consors (G. B. Sowerby I, 1833) (unaccepted > junior subjective synonym)
- Species Cardium laytoni J. Morris, 1854 † accepted as Cardium plumstedianum J. Sowerby, 1813 † (unaccepted > junior subjective synonym)
- Species Cardium lecanoideum Andrusov, 1902 † accepted as Avicardium lecanoideum (Andrusov, 1902) † (unaccepted > superseded combination)
- Species Cardium lectotis Fontannes, 1882 † accepted as Didacna lectosis (Fontannes, 1882) † (unaccepted > superseded combination)
- Species Cardium lenacoldium [sic] † accepted as Avicardium lecanoideum (Andrusov, 1902) † (unaccepted > misspelling - incorrect subsequent spelling)
- Species Cardium lengebisicum A. A. Ali-Zade & Baba-Zade, 1969 † accepted as Miricardium caracutum (Uspenskaja, 1931) † (unaccepted > junior subjective synonym)
- Species Cardium lenzi R. Hoernes, 1874 † accepted as Paradacna lenzi (R. Hoernes, 1874) † (unaccepted > superseded combination)
- Species Cardium leognanense Mayer, 1866 † accepted as Acanthocardia leognanensis (Mayer, 1866) † (original combination)
- Species Cardium lepidum Sauvage & Rigaux, 1872 † accepted as Protocardia lepida (Sauvage & Rigaux, 1872) †
- Species Cardium leucostomum Born, 1780 accepted as Cardium magnum Linnaeus, 1758 (unaccepted > junior objective synonym)
- Species Cardium leve Anton, 1838 accepted as Vepricardium multispinosum (G. B. Sowerby II, 1839) (unaccepted > nomen oblitum, declared nomen oblitum by ter Poorten (2011))
- Species Cardium levesquei A. d'Orbigny, 1850 † accepted as Parvicardium levesquei (A. d'Orbigny, 1850) † (unaccepted > superseded combination)
- Species Cardium levisulcatum E. A. Smith, 1903 accepted as Fragum erugatum (Tate, 1889) (unaccepted > junior subjective synonym)
- Species Cardium lima Schröter, 1786 accepted as Vepricardium asiaticum (Bruguière, 1789) (synonym)
- Species Cardium lima Reeve, 1845 accepted as Dallocardia muricata (Linnaeus, 1758) (unaccepted > junior homonym, non Cardium lima Schröter, 1786; nec Lamarck, 1805)
- Species Cardium limosum Cheltsov, 1965 † accepted as Acobaecardium akobae (Cheltsov, 1965) † (tentative subjective synonym)
- Species Cardium lineatum Gmelin, 1791 accepted as Laevicardium serratum (Linnaeus, 1758) (unaccepted > junior subjective synonym)
- Species Cardium lingualeonis Guppy, 1866 † accepted as Phlogocardia lingualeonis (Guppy, 1866) † (unaccepted > superseded combination)
- Species Cardium lini A. A. Ali-Zade, 1967 † accepted as Cerastoderma dombra (Andrusov, 1902) † (tentative junior subjective synonym)
- Species Cardium linteum Conrad, 1855 † accepted as Nemocardium linteum (Conrad, 1855) † (unaccepted > superseded combination)
- Species Cardium lithocardium Linnaeus, 1771 † accepted as Avicularium lithocardium (Linnaeus, 1771) †
- Species Cardium lithopodolicum Du Bois de Montpéreux, 1831 † accepted as Obsoletiformes lithopodolicus (Du Bois de Montpéreux, 1831) † (unaccepted > superseded combination)
- Species Cardium litorosum A. A. Ali-Zade & Kabakova, 1967 † accepted as Avicardium litorosum (A. A. Ali-Zade & Kabakova, 1967) † (unaccepted > superseded combination)
- Species Cardium littorale Eichwald, 1850 † accepted as Pseudoprosodacna littoralis (Eichwald, 1850) †
- Variety Cardium littorale var. rostrata Sinzov, 1900 † accepted as Prosodacnomya rostrata (Sinzov, 1900) † (superseded rank and combination)
- Species Cardium liverovskayae Merklin, 1950 † accepted as Parvicardium liverovskayae (Merklin, 1950) † (unaccepted > superseded combination)
- Species Cardium lobulatum Deshayes, 1855 accepted as Pseudofulvia lobulata (Deshayes, 1855) (unaccepted > superseded combination)
- Species Cardium longipes Grimm, 1877 accepted as Didacna longipes (Grimm, 1877) (unaccepted > superseded combination)
- Species Cardium loroisii Hupé, 1856 accepted as Cardium muticum Reeve, 1844 (unaccepted > junior subjective synonym)
- Species Cardium loveni W. Thompson, 1845 accepted as Parvicardium minimum (R. A. Philippi, 1836) (unaccepted > junior subjective synonym)
- Species Cardium loweni Sinzov, 1875 † accepted as Kubanocardium loweni (Sinzov, 1875) † (unaccepted > superseded combination)
- Species Cardium lubricum A. A. Ali-Zade, 1967 † accepted as Avicardium subleve Cheltsov, 1965 † (tentative junior subjective synonym)
- Species Cardium lucinoides P. P. Carpenter, 1857 accepted as Cardites crassicostatus (G. B. Sowerby I, 1825) (unaccepted > junior subjective synonym)
- Species Cardium lunulatum G. Seguenza, 1880 † accepted as Acanthocardia lunulata (G. Seguenza, 1880) † (unaccepted > superseded combination)
- Species Cardium luppovi A. A. Ali-Zade, 1967 † accepted as Andrusovicardium radiiferum (Andrusov, 1902) † (tentative junior subjective synonym)
marine, brackish, fresh, terrestrial
recent + fossil
neuter
Linnaeus, C. (1758). Systema Naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. <em>Editio decima, reformata [10th revised edition], vol. 1: 824 pp. Laurentius Salvius: Holmiae.</em> , available online at https://biodiversitylibrary.org/page/726886 [details] Available for editors [request]
MolluscaBase eds. (2024). MolluscaBase. Cardium Linnaeus, 1758. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=137734 on 2024-09-19
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original description
Linnaeus, C. (1758). Systema Naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. <em>Editio decima, reformata [10th revised edition], vol. 1: 824 pp. Laurentius Salvius: Holmiae.</em> , available online at https://biodiversitylibrary.org/page/726886 [details] Available for editors [request]
original description (of Cardium (Tropidocardium) Römer, 1868) Römer, E. (1868-1869). Die Familie der Herzmuscheln, Cardiacea. In: Küster, H.C., Systematisches Conchylien-Cabinet von Martini und Chemnitz. Neu herausgegeben und vervollständigt, 10 (2): 1-124, pls 1-14. Nürnberg (Bauer & Raspe) [p. 1-24, pls 1-7, 1868; 25-124, pls 8-14, 1869].
page(s): 13 [details]
basis of record Poorten, J.J. ter. (2024). A taxonomic iconography of living Cardiidae. Harxheim: ConchBooks, 600 pp.
page(s): 301, 330 [details]
additional source Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca. in: Costello, M.J. et al. (eds), European Register of Marine Species: a check-list of the marine species in Europe and a bibliography of guides to their identification. <em>Patrimoines Naturels.</em> 50: 180-213., available online at http://www.vliz.be/imisdocs/publications/ocrd/254404.pdf [details]
subsequent type designation Children J. G. (1822-1823). Lamarck's genera of shells. <i>Quarterly Journal of Science, Literature and the Arts (London)</i>, 14(27): 64-87, pl. 3-4 [ottobre 1822]; 14(28): 298-322, pl. 5-6 [gennaio 1823]; 15(29): 23-52, pl. 2-3 [aprile 1823]; 15(30): 216-258, pl. 7-8 [luglio 1823]; 16 (31): 49-79, pl. 5 [ottobre 1823]; 16 (32): 241-264, pl. 6 [dicembre 1823]. [Vedi anche Kennard, Salisbury & Woodward, 1931], available online at http://biodiversitylibrary.org/page/14496865
page(s): 315 [details]
original description (of Cardium (Tropidocardium) Römer, 1868) Römer, E. (1868-1869). Die Familie der Herzmuscheln, Cardiacea. In: Küster, H.C., Systematisches Conchylien-Cabinet von Martini und Chemnitz. Neu herausgegeben und vervollständigt, 10 (2): 1-124, pls 1-14. Nürnberg (Bauer & Raspe) [p. 1-24, pls 1-7, 1868; 25-124, pls 8-14, 1869].
page(s): 13 [details]
basis of record Poorten, J.J. ter. (2024). A taxonomic iconography of living Cardiidae. Harxheim: ConchBooks, 600 pp.
page(s): 301, 330 [details]
additional source Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca. in: Costello, M.J. et al. (eds), European Register of Marine Species: a check-list of the marine species in Europe and a bibliography of guides to their identification. <em>Patrimoines Naturels.</em> 50: 180-213., available online at http://www.vliz.be/imisdocs/publications/ocrd/254404.pdf [details]
subsequent type designation Children J. G. (1822-1823). Lamarck's genera of shells. <i>Quarterly Journal of Science, Literature and the Arts (London)</i>, 14(27): 64-87, pl. 3-4 [ottobre 1822]; 14(28): 298-322, pl. 5-6 [gennaio 1823]; 15(29): 23-52, pl. 2-3 [aprile 1823]; 15(30): 216-258, pl. 7-8 [luglio 1823]; 16 (31): 49-79, pl. 5 [ottobre 1823]; 16 (32): 241-264, pl. 6 [dicembre 1823]. [Vedi anche Kennard, Salisbury & Woodward, 1931], available online at http://biodiversitylibrary.org/page/14496865
page(s): 315 [details]
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Japanese | ヒガノコザル | [details] |