• Cardita (Cyclocardia) Conrad, 1867 accepted as Cyclocardia Conrad, 1867
• Cardita (Cyclocardia) crebricostata A. Krause, 1885 accepted as Cyclocardia crebricostata (A. Krause, 1885)
• Cardita (Cyclocardia) crebricostata nomensis MacNeil, 1943 † accepted as Cyclocardia crebricostata (A. Krause, 1885)
• Cardita (Cyclocardia) intermedia Thiele, 1912 accepted as Cyclocardia astartoides (E. von Martens, 1878) accepted as Cyclocardia antarctica (E. A. Smith, 1907)
• Cardita (Cyclocardia) longini J. L. Baily, 1945 accepted as Cardita bailyi J. Q. Burch, 1944 accepted as Cyclocardia bailyi (J. Q. Burch, 1944)
• Cardita (Cyclocardia) ventricosa A. Gould, 1850 accepted as Coanicardita ventricosa (A. Gould, 1850)
• Cardita (Cyclocardia) ventricosa montereyensis A. G. Smith & M. Gordon, 1948 accepted as Coanicardita ventricosa (A. Gould, 1850)
• Cyclocardia Conrad, 1867
• Cyclocardia (Arcturellina) Chavan, 1951 † accepted as Arcturellina Chavan, 1951
• Cyclocardia (Arcturellina) aliena (Deshayes, 1858) † accepted as Arcturellina aliena (Deshayes, 1858) †
• Cyclocardia (Arcturellina) bernardi Le Renard, 1994 † accepted as Arcturellina bernardi (Le Renard, 1994) †
• Cyclocardia (Arcturellina) calvimontana (Mayer-Eymar, 1890) † accepted as Arcturellina calvimontana (Mayer-Eymar, 1890) †
• Cyclocardia (Arcturellina) elegans (Lamarck, 1805) † accepted as Arcturellina elegans (Lamarck, 1805) †
• Cyclocardia (Arcturellina) hindmarshensis Ludbrook, 1955 † accepted as Arcturellina hindmarshensis (Ludbrook, 1955) †
• Cyclocardia (Arcturellina) ornata (Deshayes, 1858) † accepted as Arcturellina ornata (Deshayes, 1858) †
• Cyclocardia (Arcturellina) peridonea Ludbrook, 1955 † accepted as Arcturellina peridonea (Ludbrook, 1955) †
• Cyclocardia (Arcturellina) prevosti (Deshayes, 1858) † accepted as Arcturellina prevosti (Deshayes, 1858) †
• Cyclocardia (Arcturellina) propinqua (Deshayes, 1858) † accepted as Arcturellina propinqua (Deshayes, 1858) †
• Cyclocardia (Arcturellina) pulchra (Deshayes, 1858) † accepted as Arcturellina pulchra (Deshayes, 1858) †
• Cyclocardia (Arcturellina) pusilla (Deshayes, 1858) † accepted as Arcturellina pusilla (Deshayes, 1858) †
• Cyclocardia (Arcturellina) serrulata (Deshayes, 1858) † accepted as Arcturellina serrulata (Deshayes, 1858) †
• Cyclocardia (Arcturellina) squamosa (Lamarck, 1805) † accepted as Arcturellina squamosa (Lamarck, 1805) †
• Cyclocardia (Arcturellina) subrotunda (Defrance, 1828) † accepted as Arcturellina subrotunda (Defrance, 1828) †
• Cyclocardia (Arcturellina) sulcata (Solander, 1766) † accepted as Arcturellina sulcata (Solander, 1766) †
• Cyclocardia (Crassicardia) Savitsky, 1979 represented as Cyclocardia Conrad, 1867
• Cyclocardia (Crassicardia) crassidens (Broderip & G. B. Sowerby I, 1829) represented as Cyclocardia crassidens (Broderip & G. B. Sowerby I, 1829)
• Cyclocardia (Cyclocardia) Conrad, 1867 represented as Cyclocardia Conrad, 1867
• Cyclocardia (Cyclocardia) crebricostata (A. Krause, 1885) represented as Cyclocardia crebricostata (A. Krause, 1885)
• Cyclocardia (Cyclocardia) expansa (Takeda, 1953) † accepted as Cyclocardia expansa (Takeda, 1953) †
• Cyclocardia (Cyclocardia) ilpinensis Pronina, 1973 † accepted as Cyclocardia ilpinensis Pronina, 1973 †
• Cyclocardia (Cyclocardia) isaotakii (Tiba, 1972) represented as Cyclocardia isaotakii (Tiba, 1972)
• Cyclocardia (Cyclocardia) laxata (Yokoyama, 1924) † accepted as Ainicardita laxata (Yokoyama, 1924) †
• Cyclocardia (Cyclocardia) myogadaniensis (Itoigawa, 1958) † represented as Cyclocardia myogadaniensis (Itoigawa, 1958) †
• Cyclocardia (Cyclocardia) orbicularis (J. De C. Sowerby, 1825) † accepted as Cyclocardia orbicularis (J. De C. Sowerby, 1825) †
• Cyclocardia (Cyclocardia) orbicularis chamaeformis (J. De C. Sowerby, 1825) † accepted as Cyclocardia orbicularis chamaeformis (J. De C. Sowerby, 1825) †
• Cyclocardia (Cyclocardia) orbicularis orbicularis (J. De C. Sowerby, 1825) † accepted as Cyclocardia orbicularis orbicularis (J. De C. Sowerby, 1825) †
• Cyclocardia (Cyclocardia) rotunda (Tokunaga, 1906) represented as Cyclocardia rotunda (Tokunaga, 1906)
• Cyclocardia (Cyclocardia) tokudai (Takeda, 1953) † accepted as Cyclocardia tokudai (Takeda, 1953) †
• Cyclocardia (Scalaricardita) Sacco, 1899 † accepted as Scalaricardita Sacco, 1899 †
• Cyclocardia (Scalaricardita) scalaris (J. De C. Sowerby, 1825) † accepted as Scalaricardita scalaris (J. De C. Sowerby, 1825) †
• Cyclocardia antarctica (E. A. Smith, 1907)
• Cyclocardia armilla (Dall, 1903) accepted as Pleuromeris armilla (Dall, 1903)
• Cyclocardia astartoides (E. von Martens, 1878) accepted as Cyclocardia antarctica (E. A. Smith, 1907)
• Cyclocardia awamoensis (G. F. Harris, 1897) †
• Cyclocardia bailyi (J. Q. Burch, 1944)
• Cyclocardia barbarensis (Stearns, 1890) accepted as Hippocampocardia barbarensis (Stearns, 1890)
• Cyclocardia beebei (Hertlein, 1958)
• Cyclocardia bernardi Le Renard, 1994 † accepted as Arcturellina bernardi (Le Renard, 1994) †
• Cyclocardia borealis (Conrad, 1832)
• Cyclocardia calvertensis Petuch & Drolshagen, 2010 †
• Cyclocardia cannada (Ihering, 1907) † accepted as Oesterheldia cannada (Ihering, 1907) †
• Cyclocardia castrana (Glenn, 1904) †
• Cyclocardia caumontiensis (Deshayes, 1858) †
• Cyclocardia christiei (Marwick, 1929) †
• Cyclocardia compressa (Reeve, 1843)
• Cyclocardia congelascens (Melvill & Standen, 1912) accepted as Cyclocardia thouarsii (A. d'Orbigny, 1846)
• Cyclocardia crassidens (Broderip & G. B. Sowerby I, 1829)
• Cyclocardia crebricostata (A. Krause, 1885)
• Cyclocardia dalek D. E. Pérez & C. J. del Río, 2017 †
• Cyclocardia expansa (Takeda, 1953) †
• Cyclocardia ferruginea (Clessin, 1888)
• Cyclocardia gouldii (Dall, 1903)
• Cyclocardia granulata (Say, 1824) †
• Cyclocardia ilpinensis Pronina, 1973 †
• Cyclocardia incisa (Dall, 1903)
• Cyclocardia intermedia (Thiele, 1912) accepted as Cyclocardia astartoides (E. von Martens, 1878) accepted as Cyclocardia antarctica (E. A. Smith, 1907)
• Cyclocardia isaotakii (Tiba, 1972)
• Cyclocardia magna Quilty, Darragh, Gallagher & Harding, 2016 †
• Cyclocardia marama (P. A. Maxwell, 1969) †
• Cyclocardia mesembria Stilwell & Zinsmeister, 1992 †
• Cyclocardia moniliata (Dall, 1903)
• Cyclocardia moniligena Hickman, 2015 †
• Cyclocardia monodi (Nicklès, 1953) accepted as Akardita monodi (Nicklès, 1953)
• Cyclocardia myogadaniensis (Itoigawa, 1958) †
• Cyclocardia nipponensis M. Huber, 2010 accepted as Cyclocardia rotunda (Tokunaga, 1906)
• Cyclocardia nortensis (del Río, 1986) †
• Cyclocardia novangliae (E. S. Morse, 1869)
• Cyclocardia orbica (Yokoyama, 1925) †
• Cyclocardia orbicularis (J. De C. Sowerby, 1825) †
• Cyclocardia orbicularis chamaeformis (J. De C. Sowerby, 1825) †
• Cyclocardia orbicularis orbicularis (J. De C. Sowerby, 1825) †
• Cyclocardia ovata (Riabinina, 1952)
• Cyclocardia pacifica (Yokoyama, 1924) †
• Cyclocardia pseutella (Marwick, 1929) †
• Cyclocardia ripensis Popov & Scarlato, 1980
• Cyclocardia rjabininae (Scarlato, 1955) accepted as Crassicardia rjabininae (Scarlato, 1955)
• Cyclocardia rotunda (Tokunaga, 1906)
• Cyclocardia scalaris (J. De C. Sowerby, 1825) † accepted as Scalaricardita scalaris (J. De C. Sowerby, 1825) †
• Cyclocardia spurca (G. B. Sowerby I, 1833)
• Cyclocardia thouarsii (A. d'Orbigny, 1846)
• Cyclocardia tokudai (Takeda, 1953) †
• Cyclocardia tokunagai (Yokoyama, 1924) †
• Cyclocardia trentensis Ward, 1992 †
• Cyclocardia umnaka (Willett, 1932)
• Cyclocardia vautrotorum Petuch & Drolshagen, 2010 †
• Cyclocardia velutina (E. A. Smith, 1881)
• Cyclocardia ventricosa (A. Gould, 1850) accepted as Coanicardita ventricosa (A. Gould, 1850)
• Venericardia (Cyclocardia) Conrad, 1867 † accepted as Cyclocardia Conrad, 1867
• Venericardia (Cyclocardia) alaskana Dall, 1903 accepted as Cyclocardia crebricostata (A. Krause, 1885)
• Venericardia (Cyclocardia) armilla Dall, 1903 accepted as Pleuromeris armilla (Dall, 1903)