Marine Species Traits - Trigonia Bruguière, 1789 †

Traits taxon details

Trigonia Bruguière, 1789 †

AphiaID

526493 (urn:lsid:marinespecies.org:taxname:526493)

Classification

Status

accepted

Rank

Genus

Parent

Trigoniinae Lamarck, 1819 †

Original name

Trigonia Bruguière, 1789 †

Synonymised names

Lyriodon Bronn, 1834 † · unaccepted > unjustified emendation

Lyrodon G. A. Goldfuss, 1837 † · unaccepted > unjustified emendation

Lyrodon (Trigonia) Bruguière, 1789 † · unaccepted > superseded rank

Trigonia (Lyriodon) Bronn, 1834 † · unaccepted > junior objective synonym

Trigonia (Trigonia) Bruguière, 1789 † · unaccepted > superseded rank

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Species Trigonia aclinisa Dykan, 1990 †
Species Trigonia alemanica Rollier, 1912 †
Species Trigonia alsatica Rollier, 1912 †
Species Trigonia americana F. B. Meek, 1873 †
Species Trigonia andrussovi Saveliev, 1960 †
Species Trigonia angustecostata Behrendsen, 1892 †
Species Trigonia arduennensis Rollier, 1912 †
Species Trigonia areafurcata Vetters, 1905 †
Species Trigonia bajarunasi Saveliev, 1960 †
Species Trigonia balmae C. A. Fleming, 1987 †
Species Trigonia bella Lycett, 1877 †
Species Trigonia carinata Agassiz, 1840 †
Species Trigonia castor A. d'Orbigny, 1850 †
Species Trigonia chanka Kulzhinskaya-Voronets, 1936 †
Species Trigonia charltonensis J. A. Douglas & Arkell, 1928 †
Species Trigonia conferticostata Cragin, 1905 †
Species Trigonia corderoi Lambert, 1944 †
Species Trigonia costata Parkinson, 1811 †
Species Trigonia crebraecostata Pugaczewska, 1976 †
Species Trigonia delorenzoi Greco, 1899 †
Species Trigonia denticulata Agassiz, 1840 †
Species Trigonia ehningensis Rollier, 1912 †
Species Trigonia elongata J. De C. Sowerby, 1823 †
Species Trigonia eptingensis H. Schwarz, 1973 †
Species Trigonia erbeni Alencáster de Cserna, 1963 †
Species Trigonia extentum Repman, 1963 †
Species Trigonia fluehmanni R. A. Philippi, 1899 †
Species Trigonia fortinensis Lambert, 1944 †
Species Trigonia gallica Rollier, 1912 †
Species Trigonia glosensis Bigot, 1893 †
Species Trigonia guhsani McLearn, 1926 †
Species Trigonia heva Dollfus, 1863 †
Species Trigonia infracostata Lycett, 1881 †
Species Trigonia interlaevigata F. A. Quenstedt, 1857 †
Species Trigonia latiarealis Saveliev, 1960 †
Species Trigonia laufonensis Rollier, 1912 †
Species Trigonia levyi H. A. Leanza, 1993 †
Species Trigonia libanensis Krumbeck, 1905 †
Species Trigonia lineolata Agassiz, 1840 †
Species Trigonia losadai H. A. Leanza, 1993 †
Species Trigonia marumbiana Skwarko, 1966 †
Species Trigonia marwicki C. A. Fleming, 1987 †
Species Trigonia micippe R. A. Philippi, 1899 †
Species Trigonia mirandaensis Lambert, 1944 †
Species Trigonia mollesensis Lambert, 1944 †
Species Trigonia munita Cragin, 1905 †
Species Trigonia oblonga Yanin & Bogdanova, 2017 †
Species Trigonia oehlerti Bigot, 1893 †
Species Trigonia oyamoensis Welter, 1933 †
Species Trigonia patchamensis Fürsich & Heinze, 1998 †
Species Trigonia pcelincevae Saveliev, 1960 †
Species Trigonia plana Repin, 2013 †
Species Trigonia pseudoacuta Dykan, 1990 †
Species Trigonia pseudomeriani Choffat, 1885 †
Species Trigonia pseudopapillata Dykan, 1990 †
Species Trigonia reticulata Agassiz, 1840 †
Species Trigonia rudicostata Cragin, 1905 †
Species Trigonia rugosicostata Saveliev, 1960 †
Species Trigonia signicollina C. A. Fleming, 1987 †
Species Trigonia similis (Bronn, 1836) †
Species Trigonia stelzneri Gottsche, 1878 †
Species Trigonia substriatissima Kulzhinskaya-Voronets, 1936 †
Species Trigonia subtriangularis Wetzel, 1911 †
Species Trigonia sulcata (Hermann, 1781) †
Species Trigonia sulcifera R. A. Philippi, 1899 †
Species Trigonia sumiyagura T. Kobayashi & Kaseno, 1947 †
Species Trigonia suprajurensis Agassiz, 1840 †
Species Trigonia tanganyicensis Aitken, 1961 †
Species Trigonia tepsikhaensis Bogdanova & Yanin, 2004 †
Species Trigonia thetis R. A. Philippi, 1899 †
Species Trigonia thierachensis J.-C. Fischer, 1969 †
Species Trigonia tuarensis Saveliev, 1960 †
Species Trigonia vertistriata Skwarko, 1963 †
Species Trigonia wiedmanni H. A. Leanza & Garate Zubillaga, 1987 †
Species Trigonia zonata Agassiz, 1840 †
Species Trigonia acteon Munier-Chalmas, 1882 † (uncertain > unassessed)
Species Trigonia acuta Kitchin, 1903 † (uncertain > unassessed)
Species Trigonia aequicostata Gabb, 1869 † (uncertain > taxon inquirendum)
Species Trigonia aequilatera R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia agassizi Étallon, 1862 † (uncertain > unassessed)
Species Trigonia albertaensis McLearn, 1919 † (uncertain > unassessed)
Species Trigonia alberti R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia alcobacensis Choffat, 1885 † (uncertain > unassessed)
Species Trigonia alta Conrad, 1852 † (uncertain > unassessed)
Species Trigonia alta Kulzhinskaya-Voronets, 1936 † (uncertain > unassessed, junior homonym of Trigonia alta Conrad, 1852 and Trigonia subtriangularis var. alta Wetzel, 1911)
Species Trigonia amarali R. A. Philippi, 1899 † (uncertain > unassessed)
Species Trigonia angustula Bigot, 1893 † (uncertain > unassessed)
Species Trigonia arcuata Ebray, 1858 † (uncertain > taxon inquirendum, junior homonym of Trigonia arcuata Lamarck, 1819)
Species Trigonia arcuata Lamarck, 1819 † (uncertain > unassessed)
Species Trigonia arduenna Buvignier, 1852 † (uncertain > unassessed)
Species Trigonia argentiniae Strand, 1928 † (uncertain > unassessed)
Species Trigonia argentinica Jaworski, 1926 † (uncertain > unassessed)
Species Trigonia ascheri Strand, 1928 † (uncertain > unassessed)
Species Trigonia ascoldiensis Voronets, 1933 † (uncertain > unassessed)
Species Trigonia ashtonensis Arkell, 1930 † (uncertain > unassessed)
Species Trigonia aspera Lamarck, 1819 † (uncertain > unassessed)
Species Trigonia australiensis Strand, 1928 † (uncertain > unassessed)
Species Trigonia autissiodorensis Munier-Chalmas, 1882 † (uncertain > unassessed)
Species Trigonia aylesburiensis L. R. Cox, 1929 † (uncertain > unassessed)
Species Trigonia azemmouri Gigout, 1951 † (uncertain > unassessed)
Species Trigonia azzarolae Stoppani, 1863 † (uncertain > unassessed)
Species Trigonia bachelieri A. d'Orbigny, 1850 † (uncertain > unassessed)
Species Trigonia baillycensis de Loriol, 1893 † (uncertain > unassessed)
Species Trigonia barrensis Buvignier, 1852 † (uncertain > unassessed)
Species Trigonia belgrandi Munier-Chalmas, 1882 † (uncertain > unassessed)
Species Trigonia bielefeldensis Strand, 1928 † (uncertain > unassessed)
Species Trigonia bigotia Strand, 1928 † (uncertain > unassessed)
Species Trigonia bipartita A. d'Orbigny, 1850 † (uncertain > unassessed)
Species Trigonia biseriata Étallon, 1862 † (uncertain > unassessed)
Species Trigonia bizeti Bigot, 1893 † (uncertain > unassessed)
Species Trigonia blakei Lycett, 1879 † (uncertain > unassessed)
Species Trigonia boidini de Loriol, 1874 † (uncertain > unassessed)
Species Trigonia bouchardi Oppel, 1857 † (uncertain > unassessed)
Species Trigonia breoni Munier-Chalmas, 1882 † (uncertain > unassessed)
Species Trigonia brodiei Lycett, 1877 † (uncertain > unassessed)
Species Trigonia brueggeni Strand, 1928 † (uncertain > unassessed)
Species Trigonia buchsittensis de Loriol, 1881 † (uncertain > unassessed)
Species Trigonia buckmani L. R. Cox, 1929 † (uncertain > unassessed)
Species Trigonia burckhardtiola Strand, 1928 † (uncertain > unassessed)
Species Trigonia calderoni R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia cancellata T. Wright, 1860 † (uncertain > unassessed)
Species Trigonia cardissa Agassiz, 1840 † (uncertain > unassessed)
Species Trigonia cartieri de Loriol, 1881 † (uncertain > unassessed)
Species Trigonia cassiope A. d'Orbigny, 1850 † (uncertain > unassessed)
Species Trigonia catenifera Hupé, 1854 † (uncertain > unassessed)
Species Trigonia charlockensis Kellaway & V. Wilson, 1941 † (uncertain > unassessed)
Species Trigonia charlottensis E. L. Packard, 1921 † (uncertain > unassessed)
Species Trigonia chatillonensis de Loriol, 1904 † (uncertain > unassessed)
Species Trigonia chilicola Strand, 1928 † (uncertain > unassessed)
Species Trigonia chiron A. d'Orbigny, 1850 † (uncertain > unassessed)
Species Trigonia choffatensis Strand, 1928 † (uncertain > unassessed)
Species Trigonia choffati Bigot, 1893 † (uncertain > unassessed)
Species Trigonia ciplyana Briart, 1888 † (uncertain > unassessed)
Species Trigonia clapensis Terquem & Jourdy, 1869 † (uncertain > unassessed)
Species Trigonia clathratula Strand, 1928 † (uncertain > unassessed)
Species Trigonia clavellata R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate fragments; also junior homonym of Trigonia clavellata Parkinson, 1811)
Species Trigonia clavocostata Lycett, 1850 † (uncertain > unassessed)
Species Trigonia clio A. d'Orbigny, 1850 † (uncertain > unassessed)
Species Trigonia complanata Lycett, 1872 † (uncertain > unassessed)
Species Trigonia composita Lycett, 1860 † (uncertain > unassessed)
Species Trigonia concentrica Agassiz, 1840 † (uncertain > unassessed)
Species Trigonia concentrica Cragin, 1893 † (uncertain > unassessed, junior homonym of Trigonia concentrica Agassiz, 1840)
Species Trigonia concinna F. A. Roemer, 1839 † (uncertain > unassessed)
Species Trigonia conformis Agassiz, 1840 † (uncertain > unassessed)
Species Trigonia consobrina Eichwald, 1871 † (uncertain > unassessed)
Species Trigonia contejeani Thurmann, 1863 † (uncertain > unassessed)
Species Trigonia coquandi R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia coqueiroensis Maury, 1937 † (uncertain > unassessed)
Species Trigonia coralliensis Strand, 1928 † (uncertain > unassessed)
Species Trigonia corbierensis Petter-Receveur, 1955 † (uncertain > unassessed)
Species Trigonia cordata C. Drouët, 1825 † (uncertain > unassessed)
Species Trigonia cornbrashensis Strand, 1928 † (uncertain > unassessed)
Species Trigonia cornuta R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia costatula Lycett, 1850 † (uncertain > unassessed)
Species Trigonia costellata Agassiz, 1840 † (uncertain > unassessed)
Species Trigonia cottae Bruder, 1885 † (uncertain > unassessed)
Species Trigonia cottaldi de Loriol, 1868 † (uncertain > unassessed)
Species Trigonia crassatellina Lamarck, 1819 † (uncertain > unassessed)
Species Trigonia curmontensis de Loriol, 1872 † (uncertain > unassessed)
Species Trigonia cybele A. d'Orbigny, 1850 † (uncertain > unassessed)
Species Trigonia cycloides R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia cymba Contejean, 1860 † (uncertain > unassessed)
Species Trigonia damoniana de Loriol, 1866 † (uncertain > unassessed)
Species Trigonia damoniella Strand, 1928 † (uncertain > unassessed)
Species Trigonia daphne de Loriol, 1893 † (uncertain > unassessed)
Species Trigonia decipiens R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould; also a junior homonym of Trigonia decipiens Munier-Chalmas, 1882)
Species Trigonia decipiens Munier-Chalmas, 1882 † (uncertain > unassessed)
Species Trigonia decorata Lycett, 1853 † (uncertain > unassessed)
Species Trigonia deeckeella Strand, 1928 † (uncertain > unassessed)
Species Trigonia deeckei Strand, 1928 † (uncertain > unassessed)
Species Trigonia densicostata Roeder, 1882 † (uncertain > unassessed)
Species Trigonia destefanii Feruglio, 1937 † (uncertain > unassessed)
Species Trigonia devexa Eichwald, 1871 † (uncertain > unassessed)
Species Trigonia divaricata A. d'Orbigny, 1844 † (uncertain > unassessed)
Species Trigonia dorsetensis L. R. Cox, 1929 † (uncertain > unassessed)
Species Trigonia dubia O. Boettger, 1880 † (uncertain)
Species Trigonia dumortieri Munier-Chalmas, 1882 † (uncertain > unassessed)
Species Trigonia dumortieri Rollier, 1912 † (uncertain > taxon inquirendum)
Species Trigonia echinata A. d'Orbigny, 1850 † (uncertain > unassessed)
Species Trigonia echinophila J. B. Greppin, 1870 † (uncertain > unassessed)
Species Trigonia ecplecta Wilckens, 1907 † (uncertain > unassessed)
Species Trigonia edmundi de Loriol, 1874 † (uncertain > unassessed)
Species Trigonia etalloni de Loriol, 1872 † (uncertain > unassessed)
Species Trigonia eudora R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia exigua Lycett, 1853 † (uncertain > unassessed)
Species Trigonia falciformis R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia fallax R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia ferdinandi Frech, 1916 † (uncertain > unassessed)
Species Trigonia ferrieri McLearn, 1924 † (uncertain > unassessed)
Species Trigonia feuguerollensis Bigot, 1893 † (uncertain > unassessed)
Species Trigonia fimbriata Lycett, 1877 † (uncertain > unassessed)
Species Trigonia fischeri Munier-Chalmas, 1882 † (uncertain > unassessed)
Species Trigonia fittonella Strand, 1928 † (uncertain > unassessed)
Species Trigonia flexuosa Lamarck, 1819 † (uncertain > unassessed)
Species Trigonia foncki R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia gabbensis Strand, 1928 † (uncertain > unassessed)
Species Trigonia germaini Couffon, 1919 † (uncertain > unassessed)
Species Trigonia germanica J. Roemer, 1911 † (uncertain > unassessed)
Species Trigonia gibbosa J. Sowerby, 1819 † (uncertain > unassessed)
Species Trigonia gillieroni J. B. Greppin, 1870 † (uncertain > unassessed)
Species Trigonia girardoti de Loriol, 1904 † (uncertain > unassessed)
Species Trigonia glabra R. A. Philippi, 1887 † (uncertain > unassessed)
Species Trigonia glabrata R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia glasvillei Munier-Chalmas, 1865 † (uncertain > unassessed)
Species Trigonia gracilicosta Étallon, 1862 † (uncertain > unassessed)
Species Trigonia granigera Contejean, 1860 † (uncertain > unassessed)
Species Trigonia grayensis Étallon, 1864 † (uncertain > unassessed)
Species Trigonia greppini Étallon, 1863 † (uncertain > unassessed)
Species Trigonia gresslyi Thurmann, 1863 † (uncertain > unassessed)
Species Trigonia halimede R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia helena de Loriol, 1893 † (uncertain > unassessed)
Species Trigonia hennigiana Strand, 1928 † (uncertain > unassessed)
Species Trigonia hilli Strand, 1928 † (uncertain > unassessed)
Species Trigonia humilis R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia hunstantonensis Seeley, 1861 † (uncertain > unassessed)
Species Trigonia hybrida F. A. Roemer, 1836 † (uncertain > unassessed)
Species Trigonia impressa J. Sowerby, 1828 † (uncertain > unassessed)
Species Trigonia incerta Portlock, 1843 † (uncertain > unassessed)
Species Trigonia inconspicua R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia inflata Lamarck, 1819 † (uncertain > unassessed)
Species Trigonia inflata F. A. Roemer, 1839 † (uncertain > unassessed, junior homonym of Trigonia inflata Lamarck, 1819)
Species Trigonia inostranzevi Strémooukhov, 1897 † (uncertain > unassessed)
Species Trigonia inouyei Yehara, 1921 † (uncertain > unassessed)
Species Trigonia jablanica Strand, 1928 † (uncertain > unassessed)
Species Trigonia jacobi Dechaseaux, 1932 † (uncertain > unassessed)
Species Trigonia jarryi Bigot, 1893 † (uncertain > unassessed)
Species Trigonia juddiana Lycett, 1872 † (uncertain > unassessed)
Species Trigonia julii Étallon, 1863 † (uncertain > unassessed)
Species Trigonia kayana F. M. Anderson, 1938 † (uncertain > unassessed)
Species Trigonia kenti L. R. Cox, 1965 † (uncertain > unassessed)
Species Trigonia kheraensis L. R. Cox, 1952 † (uncertain > unassessed)
Species Trigonia kiprianovi Strémooukhov, 1897 † (uncertain > unassessed)
Species Trigonia kitchini Strand, 1928 † (uncertain > unassessed, junior homonym of Trigonia kitchini E. H. L. Schwarz, 1915)
Species Trigonia krugi R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia laffittei Freneix & Busson, 1963 † (uncertain > unassessed)
Species Trigonia lamberti Petitclerc, 1900 † (uncertain > unassessed)
Species Trigonia leblanci de Loriol, 1874 † (uncertain > unassessed)
Species Trigonia leckenbyi Lycett, 1874 † (uncertain > unassessed)
Species Trigonia legayi Cossmann, 1912 † (uncertain > unassessed)
Species Trigonia lennieri Bigot, 1893 † (uncertain > unassessed)
Species Trigonia leonhardi Strand, 1928 † (uncertain > unassessed)
Species Trigonia letteroni de Loriol, 1868 † (uncertain > unassessed)
Species Trigonia linearis Münster, 1834 † (uncertain > unassessed)
Species Trigonia littlei Frebold, 1959 † (uncertain > unassessed)
Species Trigonia longirostris A. d'Orbigny, 1850 † (uncertain > unassessed)
Species Trigonia longissima Staesche, 1932 † (uncertain > unassessed)
Species Trigonia loockiensis Strand, 1928 † (uncertain > unassessed)
Species Trigonia lorioli Choffat, 1885 † (uncertain > unassessed)
Species Trigonia lycettii Bigot, 1893 † (uncertain > taxon inquirendum, junior homonym of Trigonia lycetti Gottsche, 1878 and Trigonia lycettii Walford, 1885)
Species Trigonia lyrodontis Strand, 1928 † (uncertain > unassessed)
Species Trigonia macphersoni Choffat, 1885 † (uncertain > unassessed)
Species Trigonia macrorrhyncha R. A. Philippi, 1899 † (uncertain > unassessed)
Species Trigonia mactroides R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia magnifica J. Roemer, 1911 † (uncertain > unassessed)
Species Trigonia major A. d'Orbigny, 1850 † (uncertain > unassessed)
Species Trigonia maltonensis Arkell, 1936 † (uncertain > unassessed)
Species Trigonia manflatis Strand, 1928 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia margarita Meneghini, 1880 † (uncertain > unassessed)
Species Trigonia marginata J. Morris & Lycett, 1860 † (uncertain > unassessed)
Species Trigonia marshalli Strand, 1928 † (uncertain > unassessed)
Species Trigonia matronensis de Loriol, 1872 † (uncertain > unassessed)
Species Trigonia matyasovszkyi Hofmann, 1912 † (uncertain > unassessed)
Species Trigonia maxima Agassiz, 1840 † (uncertain > unassessed)
Species Trigonia medlycotti Damon, 1884 † (uncertain > unassessed)
Species Trigonia meronitzensis Strand, 1928 † (uncertain > unassessed)
Species Trigonia micheloti de Loriol, 1866 † (uncertain > unassessed)
Species Trigonia migeodi L. R. Cox, 1965 † (uncertain > unassessed)
Species Trigonia migliorinii Tavani, 1948 † (uncertain > unassessed, junior homonym of Trigonia (Lyriodon) migliorinii Venzo, 1944)
Species Trigonia minuta R. A. Philippi, 1899 † (uncertain > unassessed, junior homonym of Trigonia minuta Stoliczka, 1871)
Species Trigonia miyakonis Strand, 1928 † (uncertain > unassessed)
Species Trigonia modesta Tate & Blake, 1876 † (uncertain > unassessed)
Species Trigonia molengraaffi R. B. Newton, 1903 † (uncertain > unassessed)
Species Trigonia montanaensis F. B. Meek, 1873 † (uncertain > unassessed)
Species Trigonia monthiersi Munier-Chalmas, 1882 † (uncertain > unassessed)
Species Trigonia moreli Munier-Chalmas, 1882 † (uncertain > unassessed)
Species Trigonia morieri Bigot, 1893 † (uncertain > unassessed)
Species Trigonia morrisiana Strand, 1928 † (uncertain > unassessed)
Species Trigonia muennichi R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia munieri Hébert, 1865 † (uncertain > unassessed)
Species Trigonia nalivkini Tuchkov, 1956 † (uncertain > unassessed)
Species Trigonia nana Eichwald, 1871 † (uncertain > unassessed)
Species Trigonia neocomica Strand, 1928 † (uncertain > unassessed)
Species Trigonia neptuni A. d'Orbigny, 1850 † (uncertain > unassessed)
Species Trigonia nitida Kitchin, 1903 † (uncertain > unassessed)
Species Trigonia northamptonensis Walford, 1885 † (uncertain > unassessed)
Species Trigonia notata Agassiz, 1840 † (uncertain > unassessed)
Species Trigonia nux R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia obesa R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia obtusa Hupé, 1854 † (uncertain > unassessed)
Species Trigonia oomia Strand, 1928 † (uncertain > unassessed)
Species Trigonia oreas R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia oustaleti de Loriol, 1874 † (uncertain > unassessed)
Species Trigonia ovalis R. A. Philippi, 1899 † (uncertain > unassessed)
Species Trigonia oviedensis Lycett, 1881 † (uncertain > unassessed)
Species Trigonia palaeopatagonica Piatnitzky, 1938 † (uncertain > unassessed)
Species Trigonia paradoxa Agassiz, 1840 † (uncertain > unassessed)
Species Trigonia parva Forbes, 1844 † (uncertain > unassessed)
Species Trigonia parvula O. G. Costa, 1864 † (uncertain > unassessed, junior homonym of Trigonia parvula Agassiz, 1840 and Trigonia parvula Reuss, 1846)
Species Trigonia patagonica Feruglio, 1937 † (uncertain > unassessed)
Species Trigonia paucicostata Burwash, 1914 † (uncertain > unassessed)
Species Trigonia peninsularis Coquand, 1865 † (uncertain > unassessed)
Species Trigonia perroni Étallon, 1864 † (uncertain > unassessed)
Species Trigonia petasoides Wetzel, 1911 † (uncertain > unassessed)
Species Trigonia phillipsi J. Morris & Lycett, 1853 † (uncertain > unassessed)
Species Trigonia pickeringensis Arkell, 1930 † (uncertain > unassessed)
Species Trigonia picta Agassiz, 1840 † (uncertain > unassessed)
Species Trigonia pinzasii Welter, 1913 † (uncertain > unassessed)
Species Trigonia plagia R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia plicata Agassiz, 1840 † (uncertain > unassessed)
Species Trigonia popelaievi Strémooukhov, 1897 † (uncertain > unassessed)
Species Trigonia portlandensis L. R. Cox, 1925 † (uncertain > unassessed)
Species Trigonia portlandica (J. De C. Sowerby, 1836) † (uncertain > unassessed)
Species Trigonia praecostata Branco, 1879 † (uncertain > unassessed)
Species Trigonia praescabroidea Jaworski, 1915 † (uncertain > unassessed)
Species Trigonia praestriata Cragin, 1905 † (uncertain > unassessed)
Species Trigonia primaeva Troedsson, 1951 † (uncertain > unassessed)
Species Trigonia prodigiosa Strand, 1928 † (uncertain > unassessed)
Species Trigonia producta Terquem & Jourdy, 1869 † (uncertain > unassessed, junior homonym of Trigonia producta Lycett, 1860)
Species Trigonia progonos Paulcke, 1903 † (uncertain > unassessed)
Species Trigonia propinqua Kitchin, 1903 † (uncertain > unassessed)
Species Trigonia prora Kitchin, 1903 † (uncertain > unassessed)
Species Trigonia proscabra Cragin, 1905 † (uncertain > unassessed)
Species Trigonia pseudobronni Strand, 1928 † (uncertain > unassessed)
Species Trigonia pseudocyprina Contejean, 1860 † (uncertain > unassessed)
Species Trigonia pseudosinuosa Brun & Chatelet, 1926 † (uncertain > unassessed)
Species Trigonia pulchra Kitchin, 1903 † (uncertain > unassessed)
Species Trigonia puschi Deshayes, 1858 † (uncertain > unassessed)
Species Trigonia pustulata T. Brown, 1849 † (uncertain > unassessed)
Species Trigonia quatriformis Seguenza, 1882 † (uncertain > unassessed)
Species Trigonia quenstedti F. A. Quenstedt, 1857 † (uncertain > unassessed)
Species Trigonia quenstedtiella Strand, 1928 † (uncertain > unassessed)
Species Trigonia radiata Étallon, 1864 † (uncertain > taxon inquirendum, junior homonym of Trigonia radiata Benett, 1831)
Species Trigonia ramsayii T. Wright, 1856 † (uncertain > unassessed)
Species Trigonia raricostata Moesch, 1867 † (uncertain > unassessed)
Species Trigonia reboursi Riche, 1904 † (uncertain > unassessed)
Species Trigonia recticostata Burwash, 1914 † (uncertain > unassessed)
Species Trigonia regularicostata Blanckenhorn, 1890 † (uncertain > unassessed)
Species Trigonia remota Kitchin, 1903 † (uncertain > unassessed)
Species Trigonia renevieri Choffat, 1885 † (uncertain > unassessed)
Species Trigonia reniformis Burwash, 1914 † (uncertain > unassessed)
Species Trigonia revoili Rochebrune, 1882 † (uncertain > unassessed)
Species Trigonia richei Strand, 1928 † (uncertain > unassessed)
Species Trigonia rigauxi Cossmann, 1911 † (uncertain > unassessed)
Species Trigonia rigauxiana Munier-Chalmas, 1865 † (uncertain > unassessed)
Species Trigonia roelligiana Maas, 1895 † (uncertain > unassessed)
Species Trigonia roemeri Agassiz, 1840 † (uncertain > unassessed)
Species Trigonia rolandi Cross, 1875 † (uncertain > unassessed)
Species Trigonia rostrum Agassiz, 1840 † (uncertain > unassessed)
Species Trigonia rotundata de Loriol, 1861 † (uncertain > unassessed)
Species Trigonia roxane Borne, 1891 † (uncertain > unassessed)
Species Trigonia royeri de Loriol, 1872 † (uncertain > unassessed)
Species Trigonia rugosa Lamarck, 1819 † (uncertain > unassessed)
Species Trigonia rugosa R. A. Philippi, 1899 † (uncertain > unassessed, junior homonym of Trigonia rugosa Parkinson, 1811 and T. rugosa Lamarck, 1819)
Species Trigonia rugosa Parkinson, 1811 † (uncertain > unassessed)
Species Trigonia rupellensis A. d'Orbigny, 1850 † (uncertain > unassessed)
Species Trigonia sabae Blanckenhorn, 1890 † (uncertain > unassessed)
Species Trigonia sachalinica Strand, 1928 † (uncertain > unassessed)
Species Trigonia sakawaensis Strand, 1928 † (uncertain > unassessed)
Species Trigonia saltillensis Wolleben, 1977 † (uncertain > unassessed)
Species Trigonia sampana Skwarko, 1967 † (uncertain > unassessed)
Species Trigonia sauvagei de Loriol, 1874 † (uncertain > unassessed)
Species Trigonia scabiosa Litschkov, 1912 † (uncertain > unassessed)
Species Trigonia sculpta (Lycett, 1853) † (uncertain > unassessed)
Species Trigonia securiformis Cragin, 1893 † (uncertain > unassessed)
Species Trigonia seeleyi Rigaux, 1892 † (uncertain > unassessed)
Species Trigonia semilunata R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia sexcostata F. A. Roemer, 1836 † (uncertain > unassessed)
Species Trigonia sibirzevi Strémooukhov, 1897 † (uncertain > unassessed)
Species Trigonia signata Agassiz, 1840 † (uncertain > unassessed)
Species Trigonia sinuosa Lamarck, 1819 † (uncertain > unassessed)
Species Trigonia sologureni Felix, 1891 † (uncertain > nomen dubium)
Species Trigonia somaliensis Stefanini, 1939 † (uncertain > unassessed)
Species Trigonia spaichingensis Strand, 1928 † (uncertain > unassessed)
Species Trigonia spitiensis Holdhaus, 1913 † (uncertain > unassessed)
Species Trigonia stiebeli S. A. Miller, 1881 † (uncertain > unassessed)
Species Trigonia stolpi R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia stremmei E. Lange, 1914 † (uncertain > unassessed)
Species Trigonia striata J. Sowerby, 1819 † (uncertain > unassessed)
Species Trigonia striatissima Bigot, 1893 † (uncertain > unassessed)
Species Trigonia stricta Étallon, 1862 † (uncertain > unassessed)
Species Trigonia subcarinata Ebray, 1858 † (uncertain > unassessed)
Species Trigonia subconcentrica Étallon, 1863 † (uncertain > unassessed)
Species Trigonia subcostata Leymerie, 1846 † (uncertain > unassessed)
Species Trigonia subliterata Münster, 1841 † (uncertain > unassessed)
Species Trigonia subpulchella A. d'Orbigny, 1850 † (uncertain > unassessed)
Species Trigonia subtruncata Repman, 1963 † (uncertain > taxon inquirendum, junior homonym of Trigonia subtruncata Etallon, 1864)
Species Trigonia subtruncata Étallon, 1864 † (uncertain > unassessed)
Species Trigonia suevi Strémooukhov, 1897 † (uncertain > unassessed)
Species Trigonia swindonensis Blake, 1880 † (uncertain > unassessed)
Species Trigonia syriaca Conrad, 1852 † (uncertain > unassessed)
Species Trigonia tabacoensis Barthel, 1958 † (uncertain > unassessed)
Species Trigonia tatei Neumayr, 1882 † (uncertain > unassessed)
Species Trigonia tenuicosta Lycett, 1853 † (uncertain > unassessed)
Species Trigonia tenuis R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia tenuistriata R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia tenuitexta Lycett, 1874 † (uncertain > unassessed)
Species Trigonia teruelensis Strand, 1928 † (uncertain > unassessed)
Species Trigonia tetragona Stoppani, 1857 † (uncertain > unassessed)
Species Trigonia texana Conrad, 1857 † (uncertain > unassessed)
Species Trigonia textilis E. J. Lees, 1934 † (uncertain > unassessed)
Species Trigonia thevenini de Loriol, 1904 † (uncertain > unassessed)
Species Trigonia thomarensis Choffat, 1885 † (uncertain)
Species Trigonia thurmanni Contejean, 1860 † (uncertain > unassessed)
Species Trigonia tinguiriricae Strand, 1928 † (uncertain > unassessed)
Species Trigonia tinguiriricaensis Strand, 1928 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia tombecki de Loriol, 1872 † (uncertain > unassessed)
Species Trigonia trafalgarensis P. S. Warren, 1932 † (uncertain > unassessed)
Species Trigonia trapezoidea R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia triangularis R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia triquetra Seebach, 1864 † (uncertain > unassessed)
Species Trigonia troniensis Reis, 1898 † (uncertain > unassessed)
Species Trigonia truncata Agassiz, 1840 † (uncertain > unassessed)
Species Trigonia tuberculosa Lycett, 1850 † (uncertain > unassessed)
Species Trigonia tuberosa R. A. Philippi, 1899 † (uncertain > unassessed)
Species Trigonia tumida Kitchin, 1903 † (uncertain > unassessed)
Species Trigonia undaticosta Seguenza, 1882 † (uncertain > unassessed)
Species Trigonia unioniformis R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia valfinensis de Loriol, 1888 † (uncertain > unassessed)
Species Trigonia variegata Credner, 1863 † (uncertain > unassessed)
Species Trigonia veneriformis R. A. Philippi, 1899 † (uncertain > nomen dubium, indeterminate internal mould)
Species Trigonia verrucosa Credner, 1863 † (uncertain > unassessed)
Species Trigonia vilanovae Strand, 1928 † (uncertain > unassessed)
Species Trigonia villersensis Bigot, 1895 † (uncertain > unassessed)
Species Trigonia volckmanni R. A. Philippi, 1899 † (uncertain > unassessed)
Species Trigonia voltzii Agassiz, 1840 † (uncertain > unassessed)
Species Trigonia walfordensis Strand, 1928 † (uncertain > unassessed)
Species Trigonia wetzeliana Strand, 1928 † (uncertain > unassessed)
Species Trigonia wightensis Strand, 1928 † (uncertain > unassessed)
Species Trigonia williamsi R. A. Philippi, 1899 † (uncertain > nomen dubium, suspected teratology)
Species Trigonia witchelli Lycett, 1877 † (uncertain > unassessed)
Species Trigonia woodwardi Lycett, 1872 † (uncertain > unassessed)
Species Trigonia yeharai Saeki, 1925 † (uncertain > unassessed)
Species Trigonia yokoyamai Yehara, 1915 † (uncertain > unassessed)
Species Trigonia zieteni É. Greppin, 1899 † (uncertain > unassessed, junior homonym of Trigonia signata var. zietenii Lycett, 1883)
Species Trigonia zieteniella Strand, 1928 † (uncertain > unassessed)
Species Trigonia zulu Strand, 1928 † (uncertain > unassessed)
Species Trigonia zwingeri Agassiz, 1840 † (uncertain > unassessed)
Subgenus Trigonia (Acanthotrigonia) van Hoepen, 1929 † accepted as Acanthotrigonia van Hoepen, 1929 †
1. Species Trigonia (Acanthotrigonia) phyllitica Glaessner, 1949 † accepted as Oistotrigonia phyllitica (Glaessner, 1949) † (unaccepted > superseded combination)
Subgenus Trigonia (Awadia) A. M. Abdallah & Fahmi, 1969 † accepted as Parorthotrigonia Ayoub-Hannaa, M. R. Cooper, Abdelhady & Fürsich, 2024 † (unaccepted > junior homonym, junior homonym of Awadia Abbass, 1962 (Bivalvia: Cardiidae); replaced by Parorthotrigonia Ayoub-Hannaa et al., 2023)
1. Species Trigonia (Awadia) lepidomorpha A. M. Abdallah & Fahmi, 1969 † accepted as Parorthotrigonia lepidomorpha (A. M. Abdallah & Fahmi, 1969) † (unaccepted > superseded combination)
Subgenus Trigonia (Clavitrigonia) A. F. Leanza, 1942 † accepted as Clavotrigonia Lebküchner, 1932 † accepted as Myophorella Bayle, 1878 † (unaccepted > junior objective synonym, junior objective synonym of Clavotrigonia Lebküchner, 1932)
1. Species Trigonia (Clavitrigonia) araucana A. F. Leanza, 1942 † accepted as Myophorella araucana (A. F. Leanza, 1942) † accepted as Promyophorella araucana (A. F. Leanza, 1942) †
Subgenus Trigonia (Clavotrigonia) Lebküchner, 1932 † accepted as Myophorella Bayle, 1878 † (unaccepted > junior subjective synonym)
1. Species Trigonia (Clavotrigonia) clavaeformis Althoff, 1938 † (uncertain > unassessed)
2. Species Trigonia (Clavotrigonia) friesensis Kuhn, 1938 † (uncertain > unassessed)
3. Species Trigonia (Clavotrigonia) interrupticosta Althoff, 1936 † (uncertain > unassessed)
4. Species Trigonia (Clavotrigonia) petasoides (Wetzel, 1911) † (uncertain > unassessed)
5. Species Trigonia (Clavotrigonia) clavellulata (Strand, 1928) † accepted as Myophorella clavellulata (Strand, 1828) † (unaccepted > superseded combination)
6. Species Trigonia (Clavotrigonia) koprinensis Gerasimov, 1955 † accepted as Gerasimovella koprinensis (Gerasimov, 1955) † (unaccepted > superseded combination)
Subgenus Trigonia (Galalea) Abdallah & Fahmi, 1969 † accepted as Trigonia (Awadia) A. M. Abdallah & Fahmi, 1969 † accepted as Parorthotrigonia Ayoub-Hannaa, M. R. Cooper, Abdelhady & Fürsich, 2024 † (junior objective synonym)
1. Species Trigonia (Galalea) lepidomorpha Abdallah & Fahmi, 1969 † accepted as Parorthotrigonia lepidomorpha (A. M. Abdallah & Fahmi, 1969) † (unaccepted > superseded combination)
Subgenus Trigonia (Heslingtonia) C. A. Fleming, 1987 † accepted as Heslingtonia C. A. Fleming, 1987 †
1. Species Trigonia (Heslingtonia) campbellorum C. A. Fleming, 1987 † accepted as Heslingtonia campbellorum (C. A. Fleming, 1987) † (unaccepted > superseded combination)
Subgenus Trigonia (Indotrigonia) Dietrich, 1933 † accepted as Indotrigonia Dietrich, 1933 † (unaccepted > superseded rank)
1. Species Trigonia (Indotrigonia) africana Aitken, 1961 † accepted as Indotrigonia africana (Aitken, 1961) †
2. Species Trigonia (Indotrigonia) katrolensis Agrawal, 1956 † accepted as Indotrigonia katrolensis (Agrawal, 1956) †
3. Species Trigonia (Indotrigonia) mandawae Aitken, 1961 † accepted as Indotrigonia mandawae (Aitken, 1961) †
4. Species Trigonia (Indotrigonia) robusta Aitken, 1961 † accepted as Indotrigonia robusta (Aitken, 1961) †
5. Species Trigonia (Indotrigonia) vstriata Aitken, 1961 † accepted as Indotrigonia vstriata (Aitken, 1961) † accepted as Nambangonia vstriata (Aitken, 1961) †
Subgenus Trigonia (Iotrigonia) van Hoepen, 1929 † accepted as Iotrigonia van Hoepen, 1929 † (unaccepted > superseded rank)
1. Species Trigonia (Iotrigonia) haughtoni Rennie, 1936 † accepted as Mayesella haughtoni (Rennie, 1936) † (unaccepted > superseded combination)
Subgenus Trigonia (Kumatrigonia) Tamura, 1959 † accepted as Kumatrigonia Tamura, 1959 † (unaccepted > superseded rank)
1. Species Trigonia (Kumatrigonia) huhxilensis Y.-J. Lu, 1979 † accepted as Kumatrigonia huhxilensis Y.-J. Lu, 1979 † (unaccepted > superseded combination)
2. Species Trigonia (Kumatrigonia) qiaotouensis Y.-J. Lu, 1981 † accepted as Kumatrigonia qiaotouensis Y.-J. Lu, 1981 † (unaccepted > superseded combination)
Subgenus Trigonia (Laevitrigonia) Lebküchner, 1932 † accepted as Laevitrigonia Lebküchner, 1932 † (unaccepted > superseded rank)
1. Species Trigonia (Laevitrigonia) scheibei Dietrich, 1938 † accepted as Etayosernella scheibei (Dietrich, 1938) † (unaccepted > superseded combination)
2. Species Trigonia (Laevitrigonia) stefaninii Venzo, 1942 † accepted as Tanzanitrigonia stefaninii (Venzo, 1942) † (unaccepted > superseded combination)
Subgenus Trigonia (Lyriodon) Bronn, 1834 † accepted as Trigonia Bruguière, 1789 † (unaccepted > junior objective synonym)
1. Species Trigonia (Lyriodon) agipi Venzo, 1945 † (uncertain > unassessed)
2. Species Trigonia (Lyriodon) archinterlaevigata Wetzel, 1937 † (uncertain > unassessed)
3. Species Trigonia (Lyriodon) cecionii Venzo, 1944 † (uncertain > unassessed)
4. Species Trigonia (Lyriodon) dainellii Venzo, 1945 † (uncertain > unassessed)
5. Species Trigonia (Lyriodon) migliorinii Venzo, 1944 † (uncertain > unassessed)
6. Species Trigonia (Lyriodon) tenuilaevigata Wetzel, 1937 † (uncertain > unassessed)
7. Species Trigonia (Lyriodon) alemanica Rollier, 1912 † accepted as Trigonia alemanica Rollier, 1912 † (unaccepted > superseded combination)
8. Species Trigonia (Lyriodon) alsatica Rollier, 1912 † accepted as Trigonia alsatica Rollier, 1912 † (unaccepted > superseded combination)
9. Species Trigonia (Lyriodon) arduennensis Rollier, 1912 † accepted as Trigonia arduennensis Rollier, 1912 † (unaccepted > superseded combination)
10. Species Trigonia (Lyriodon) dumortieri Rollier, 1912 † accepted as Trigonia dumortieri Rollier, 1912 † (unaccepted > superseded combination)
11. Species Trigonia (Lyriodon) ehningensis Rollier, 1912 † accepted as Trigonia ehningensis Rollier, 1912 † (unaccepted > superseded combination)
12. Species Trigonia (Lyriodon) gallica Rollier, 1912 † accepted as Trigonia gallica Rollier, 1912 † (unaccepted > superseded combination)
13. Species Trigonia (Lyriodon) laufonensis Rollier, 1912 † accepted as Trigonia laufonensis Rollier, 1912 † (unaccepted > superseded combination)
Subgenus Trigonia (Megatrigonia) van Hoepen, 1929 † accepted as Megatrigonia van Hoepen, 1929 † (unaccepted > superseded rank)
1. Species Trigonia (Megatrigonia) obesa (van Hoepen, 1929) † accepted as Megatrigonia obesa van Hoepen, 1929 † (unaccepted > superseded combination)
Subgenus Trigonia (Minetrigonia) T. Kobayashi & Katayama, 1938 † accepted as Minetrigonia T. Kobayashi & Katayama, 1938 †
1. Species Trigonia (Minetrigonia) katayamai T. Kobayashi & Ichikawa, 1949 † accepted as Minetrigonia katayamai T. Kobayashi & Ichikawa, 1949 † (unaccepted > superseded combination)
Subgenus Trigonia (Myophorella) Bayle, 1878 † accepted as Myophorella Bayle, 1878 † (unaccepted > superseded rank)
1. Species Trigonia (Myophorella) alina (Contejean, 1860) † accepted as Myophorella alina (Contejean, 1860) † (unaccepted > superseded combination)
2. Species Trigonia (Myophorella) bronni (Agassiz, 1840) † accepted as Myophorella bronni (Agassiz, 1840) † accepted as Myophorella bronnii (Agassiz, 1840) † accepted as Myophorella clavellata (Parkinson, 1811) † (unaccepted > superseded combination)
3. Species Trigonia (Myophorella) mermodi Chavan, 1952 † accepted as Myophorella mermodi (Chavan, 1952) † (unaccepted > superseded combination)
4. Species Trigonia (Myophorella) norberti Chavan, 1952 † accepted as Myophorella norberti (Chavan, 1952) † (unaccepted > superseded combination)
5. Species Trigonia (Myophorella) perlata (Agassiz, 1840) † accepted as Myophorella perlata (Agassiz, 1840) † (unaccepted > superseded combination)
Subgenus Trigonia (Protrigonia) F.-X. Guo, 1985 † accepted as Primatrigonia Repin, 2001 † (unaccepted > junior homonym, junior homonym of Protrigonia Hampson, 1896 [Lepidoptera)])
1. Species Trigonia (Protrigonia) yunnanensis F.-X. Guo, 1985 † accepted as Primatrigonia yunnanensis (F.-X. Guo, 1985) † (unaccepted > superseded combination)
Subgenus Trigonia (Quadratotrigonia) Dietrich, 1933 † accepted as Quadratotrigonia Dietrich, 1933 † (unaccepted > superseded rank)
1. Species Trigonia (Quadratotrigonia) hondeana [sic] † accepted as Trigonia hondaana I. Lea, 1840 † accepted as Mediterraneotrigonia hondaana (I. Lea, 1840) † (unaccepted > misspelling - incorrect subsequent spelling)
Subgenus Trigonia (Rutitrigonia) van Hoepen, 1929 † accepted as Rutitrigonia van Hoepen, 1929 † (unaccepted > superseded rank)
1. Species Trigonia (Rutitrigonia) pongolensis Rennie, 1936 † accepted as Zulutrigonia pongolensis (Rennie, 1936) † (unaccepted > superseded combination)
Subgenus Trigonia (Scabrotrigonia) Dietrich, 1933 † accepted as Scabrotrigonia Dietrich, 1933 † (unaccepted > superseded rank)
1. Species Trigonia (Scabrotrigonia) borgesi Rennie, 1945 † accepted as Acanthotrigonia borgesi (Rennie, 1945) † (unaccepted > superseded combination)
2. Species Trigonia (Scabrotrigonia) gerthi Olsson, 1944 † accepted as Praescabrotrigonia olssoni M. R. Cooper, 2015 † (unaccepted > junior homonym, junior homonym of Trigonia gerthi Lísson, 1930)
3. Species Trigonia (Scabrotrigonia) incomatensis Rennie, 1936 † accepted as Incomatiella incomatensis (Rennie, 1936) † (unaccepted > superseded combination)
4. Species Trigonia (Scabrotrigonia) itongazi J. de V. Little, 1957 † accepted as Linotrigonia itongazi (J. de V. Little, 1957) † (unaccepted > superseded combination)
Subgenus Trigonia (Sphenotrigonia) Rennie, 1936 † accepted as Sphenotrigonia Rennie, 1936 †
1. Species Trigonia (Sphenotrigonia) frommurzei Rennie, 1936 † accepted as Sphenotrigonia frommurzei (Rennie, 1936) † (unaccepted > superseded combination)
Subgenus Trigonia (Steinmanella) Crickmay, 1930 † accepted as Steinmanella Crickmay, 1930 † (unaccepted > superseded rank)
1. Species Trigonia (Steinmanella) hennigi (E. Lange, 1914) † accepted as Pseudoyaadia hennigi (E. Lange, 1914) † (unaccepted > superseded combination)
Subgenus Trigonia (Trigonia) Bruguière, 1789 † accepted as Trigonia Bruguière, 1789 † (unaccepted > superseded rank)
1. Species Trigonia (Trigonia) subpapillata Saveliev, 1960 † (uncertain > unassessed, junior homonym of Trigonia papillata var. subpapillata Chavan, 1952)
2. Species Trigonia (Trigonia) aclinisa Dykan, 1990 † accepted as Trigonia aclinisa Dykan, 1990 † (unaccepted > superseded combination)
3. Species Trigonia (Trigonia) andrussovi Saveliev, 1960 † accepted as Trigonia andrussovi Saveliev, 1960 † (unaccepted > superseded combination)
4. Species Trigonia (Trigonia) bajarunasi Saveliev, 1960 † accepted as Trigonia bajarunasi Saveliev, 1960 † (unaccepted > superseded combination)
5. Species Trigonia (Trigonia) ehningensis Rollier, 1912 † accepted as Trigonia ehningensis Rollier, 1912 † (unaccepted > superseded combination)
6. Species Trigonia (Trigonia) erbeni Alencáster de Cserna, 1963 † accepted as Trigonia erbeni Alencáster de Cserna, 1963 † (unaccepted > superseded combination)
7. Species Trigonia (Trigonia) latiarealis Saveliev, 1960 † accepted as Trigonia latiarealis Saveliev, 1960 † (unaccepted > superseded combination)
8. Species Trigonia (Trigonia) marwicki C. A. Fleming, 1987 † accepted as Trigonia marwicki C. A. Fleming, 1987 †
9. Species Trigonia (Trigonia) patchamensis Fürsich & Heinze, 1998 † accepted as Trigonia patchamensis Fürsich & Heinze, 1998 † (unaccepted > superseded combination)
10. Species Trigonia (Trigonia) pcelincevae Saveliev, 1960 † accepted as Trigonia pcelincevae Saveliev, 1960 † (unaccepted > superseded combination)
11. Species Trigonia (Trigonia) pseudoacuta Dykan, 1990 † accepted as Trigonia pseudoacuta Dykan, 1990 † (unaccepted > superseded combination)
12. Species Trigonia (Trigonia) pseudopapillata Dykan, 1990 † accepted as Trigonia pseudopapillata Dykan, 1990 † (unaccepted > superseded combination)
13. Species Trigonia (Trigonia) rugosicostata Saveliev, 1960 † accepted as Trigonia rugosicostata Saveliev, 1960 † (unaccepted > superseded combination)
14. Species Trigonia (Trigonia) signicollina C. A. Fleming, 1987 † accepted as Trigonia signicollina C. A. Fleming, 1987 † (unaccepted > superseded combination)
15. Species Trigonia (Trigonia) tabacoensis Barthel, 1958 † accepted as Trigonia tabacoensis Barthel, 1958 †
16. Species Trigonia (Trigonia) tanganyicensis Aitken, 1961 † accepted as Trigonia tanganyicensis Aitken, 1961 †
17. Species Trigonia (Trigonia) tuarensis Saveliev, 1960 † accepted as Trigonia tuarensis Saveliev, 1960 † (unaccepted > superseded combination)
Subgenus Trigonia (Vaugonia) Crickmay, 1930 † accepted as Vaugonia Crickmay, 1930 † (unaccepted > superseded rank)
1. Species Trigonia (Vaugonia) kroemmelbeini A. de la Torre, 1960 † accepted as Inuitella kroemmelbeini (A. de la Torre, 1960) † (unaccepted > superseded combination)
2. Species Trigonia (Vaugonia) staffinensis F. W. Anderson & L. R. Cox, 1948 † accepted as Vaugoniella staffinensis (F. W. Anderson & L. R. Cox, 1948) † (unaccepted > superseded combination)
3. Species Trigonia (Vaugonia) tripartita Forbes, 1851 † accepted as Vaugoniella tripartita (Forbes, 1851) † (unaccepted > superseded combination)
Species Trigonia abichi Anthula, 1899 † accepted as Tamaragonia abichi (Anthula, 1899) †
Species Trigonia abrupta Buch, 1839 † accepted as Buchotrigonia abrupta (Buch, 1839) †
Species Trigonia aculeata A. d'Orbigny, 1850 † accepted as Orthotrigonia aculeata (A. d'Orbigny, 1850) † (unaccepted > superseded combination)
Species Trigonia acuticostata McCoy, 1866 † accepted as Neotrigonia acuticostata (McCoy, 1866) † (unaccepted > superseded combination)
Species Trigonia adeli Bigot, 1893 † accepted as Myophorelloides adeli (Bigot, 1893) † (unaccepted > superseded combination)
Species Trigonia affinis J. Sowerby, 1818 † accepted as Lycettitrigonia affinis (J. Sowerby, 1818) † (unaccepted > superseded combination)
Species Trigonia agrioensis C. E. Weaver, 1931 † accepted as Tanzanitrigonia agrioensis (C. E. Weaver, 1931) † (unaccepted > superseded combination)
Species Trigonia ainuana Yabe & Nagao, 1928 † accepted as Yeharella ainuana (Yabe & Nagao, 1928) † (unaccepted > superseded combination)
Species Trigonia akuschaensis Anthula, 1899 † accepted as Eurotrigonia akuschaensis (Anthula, 1899) †
Species Trigonia aliformis Parkinson, 1811 † accepted as Eurotrigonia aliformis (Parkinson, 1811) † (unaccepted > superseded combination)
Species Trigonia alina Contejean, 1860 † accepted as Myophorella alina (Contejean, 1860) † (unaccepted > superseded combination)
Species Trigonia amudariensis Arkhangelsky, 1916 † accepted as Amudariella amudariensis (Arkhangelsky, 1916) † (unaccepted > superseded combination)
Species Trigonia amuriensis Hector, 1886 † accepted as Haumurigonia pseudocaudata (Hector, 1886) † (unaccepted > nomen nudum)
Species Trigonia analoga Douvillé, 1916 † accepted as Valenciella analoga (Douvillé, 1916) † (unaccepted > superseded combination)
Species Trigonia angulata J. De C. Sowerby, 1826 † accepted as Galliciella angulata (J. De C. Sowerby, 1826) † (unaccepted > superseded combination)
Species Trigonia angulicosta Gabb, 1877 † accepted as Eufalagonia angulicosta (Gabb, 1877) † (unaccepted > superseded combination)
Species Trigonia angulifera Stoliczka, 1871 † accepted as Buchotrigonia angulifera (Stoliczka, 1871) †
Species Trigonia angusta R. A. Philippi, 1899 † accepted as Anditrigonia eximia (R. A. Philippi, 1899) † accepted as Damborenella eximia (R. A. Philippi, 1899) † (unaccepted > junior subjective synonym)
Species Trigonia antarctica Wilckens, 1910 † accepted as Orbigonina antarctica (Wilckens, 1910) † (unaccepted > superseded combination, junior homonym of Trigonia antarctica F. Péron & Lesueur, 1807)
Species Trigonia antiqua A. d'Orbigny, 1839 † accepted as Megalodon antiqua (A. d'Orbigny, 1839) † (unaccepted > superseded combination)
Species Trigonia aralensis Arkhangelsky, 1912 † accepted as Romanovskiella aralensis (Arkhangelsky, 1912) † (unaccepted > superseded combination)
Species Trigonia arata Lycett, 1863 † accepted as Fribourgella arata (Lycett, 1863) † (unaccepted > superseded combination)
Species Trigonia archiaciana A. d'Orbigny, 1844 † accepted as Oistotrigonia archiaciana (A. d'Orbigny, 1844) † (unaccepted > superseded combination)
Species Trigonia areolata P. Marshall, 1919 † accepted as Kurinuia areolata (P. Marshall, 1919) † (unaccepted > superseded combination)
Species Trigonia arsinoe R. A. Philippi, 1899 † accepted as Anditrigonia eximia (R. A. Philippi, 1899) † accepted as Damborenella eximia (R. A. Philippi, 1899) † (unaccepted > junior subjective synonym)
Species Trigonia auressensis Coquand, 1862 † accepted as Roudairia auressensis (Coquand, 1862) † (unaccepted > superseded combination)
Species Trigonia baccata Hagenow [sic] † (unaccepted > nomen nudum, attributed to Hagenow by Boll (1851), but not recorded from Hagenow)
Species Trigonia baccifera R. A. Philippi, 1899 † accepted as Rinetrigonia baccifera (R. A. Philippi, 1899) † (unaccepted > superseded combination)
Species Trigonia baltica Stoll, 1934 † accepted as Trigonia loockiensis Strand, 1928 † (unaccepted > junior objective synonym, unnecessary replacement name for Trigonia praelonga Loock, 1886, non T. praelonga Gottsche, 1878; aleady replaced by Trigonia loockiensis Strand, 1928)
Species Trigonia bartrami Stephenson, 1923 † accepted as Praescabrotrigonia bartrami (Stephenson, 1923) † (unaccepted > superseded combination)
Species Trigonia bathonica Lycett, 1863 † accepted as Orthotrigonia bathonica (Lycett, 1863) † (unaccepted > superseded combination)
Species Trigonia bathonicola Strand, 1928 † accepted as Pulchelligonia bathonicola (Strand, 1828) † (unaccepted > superseded combination)
Species Trigonia baylei R. A. Philippi, 1899 † accepted as Notoscabrotrigonia baylei (R. A. Philippi, 1899) † (unaccepted > superseded combination, also an unresolved junior homonym of Trigonia baylei Dollfus, 1862)
Species Trigonia baylei Dollfus, 1862 † accepted as Orthotrigonia baylei (Dollfus, 1862) † (unaccepted > superseded combination)
Species Trigonia beesleyana Lycett, 1874 † accepted as Psilotrigonia beesleyana (Lycett, 1874) † (unaccepted > superseded combination)
Species Trigonia beirensis Choffat, 1885 † accepted as Amaraligonia beirensis (Choffat, 1885) † (unaccepted > superseded combination)
Species Trigonia bergeroni Bigot, 1893 † accepted as Orthotrigonia bergeroni (Bigot, 1893) † (unaccepted > superseded combination)
Species Trigonia beyrichi Krumbeck, 1906 † accepted as Lycettitrigonia beyrichi (Krumbeck, 1906) † (unaccepted > superseded combination)
Species Trigonia beyschlagi G. Müller, 1900 † accepted as Indotrigonia beyschlagi (G. Müller, 1900) † (unaccepted > superseded combination)
Species Trigonia bicostata A. d'Orbigny, 1850 † accepted as Myophorella bicostata (A. d'Orbigny, 1850) † (unaccepted > superseded combination)
Species Trigonia bifera Lycett, 1879 † accepted as Orthotrigonia bifera (Lycett, 1879) † (unaccepted > superseded combination)
Species Trigonia bigoti Tornquist, 1898 † accepted as Echevarria bigoti (Tornquist, 1898) † (unaccepted > superseded combination)
Species Trigonia bipartita Bigot, 1893 † accepted as Trigonia bigotia Strand, 1928 † (unaccepted > junior homonym, junior homonym of Trigonia bipartita d'Orbigny, 1850)
Species Trigonia blanckenhorni R. B. Newton, 1909 † accepted as Pleurotrigonia blanckenhorni (R. B. Newton, 1909) † (unaccepted > superseded combination)
Species Trigonia boiti Lissón, 1930 † accepted as Allemanella boiti (Lissón, 1930) † (unaccepted > superseded combination)
Species Trigonia boloniensis de Loriol, 1866 † accepted as Lycettitrigonia boloniensis (de Loriol, 1866) † (unaccepted > superseded combination)
Species Trigonia bornhardti G. Müller, 1900 † accepted as Turikirella bornhardti (G. Müller, 1900) † (unaccepted > superseded combination)
Species Trigonia boussingaultii A. d'Orbigny, 1842 † accepted as Mediterraneotrigonia boussingaultii (A. d'Orbigny, 1842) † (unaccepted > superseded combination)
Species Trigonia bowersiana F. M. Anderson, 1958 † accepted as Musagonia bowersiana (F. M. Anderson, 1958) † (unaccepted > superseded combination)
Species Trigonia branconis Strand, 1928 † accepted as Galliciella branconis (Strand, 1828) † (unaccepted > superseded combination)
Species Trigonia branneri F. M. Anderson, 1958 † accepted as Louella fitchi (E. L. Packard, 1921) † (unaccepted > junior subjective synonym)
Species Trigonia brevicostata Kitchin, 1903 † accepted as Magharitrigonia brevicostata (Kitchin, 1903) † (unaccepted > superseded combination)
Species Trigonia brevicula Yehara, 1915 † accepted as Tamuragonia brevicula (Yehara, 1915) † (unaccepted > superseded combination)
Species Trigonia bronnii Agassiz, 1840 † accepted as Myophorella bronnii (Agassiz, 1840) † accepted as Myophorella clavellata (Parkinson, 1811) †
Species Trigonia burckhardti Jaworski, 1915 † accepted as Jaworskiella burckhardti (Jaworski, 1915) † (unaccepted > superseded combination)
Species Trigonia bustamantina Feruglio, 1938 † accepted as Haumurigonia bustamantina (Feruglio, 1938) † (unaccepted > superseded combination)
Species Trigonia californiana E. L. Packard, 1921 † accepted as Popenoella californiana (E. L. Packard, 1921) † (unaccepted > superseded combination)
Species Trigonia cardiniiformis Kitchin, 1903 † accepted as Kellygonia cardiniiformis (Kitchin, 1903) † (unaccepted > superseded combination)
Species Trigonia cardissoides Zieten, 1833 † accepted as Neoschizodus cardissoides (Zieten, 1833) † (unaccepted > superseded combination)
Species Trigonia cardissoides Lamarck, 1819 † accepted as Opis cardissoides (Lamarck, 1819) † (unaccepted > superseded combination)
Species Trigonia carrei Munier-Chalmas, 1865 † accepted as Munierchalmasia carrei (Munier-Chalmas, 1865) † (unaccepted > superseded combination)
Species Trigonia carrincurensis A. F. Leanza, 1941 † accepted as Anditrigonia carrincurensis (A. F. Leanza, 1941) †
Species Trigonia castrovillensis Stephenson, 1941 † accepted as Tennessiella castrovillensis (Stephenson, 1941) † (unaccepted > superseded combination)
Species Trigonia catanlilensis C. E. Weaver, 1931 † accepted as Jaworskiella burckhardti (Jaworski, 1915) † (unaccepted > junior subjective synonym)
Species Trigonia caucasica Bayern, 1876 † accepted as Litschkovitrigonia caucasica (Bayern, 1876) † (unaccepted > superseded combination)
Species Trigonia caudata Agassiz, 1840 † accepted as Eurotrigonia caudata (Agassiz, 1840) † (unassessed)
Species Trigonia cazadoriana Wilckens, 1907 † accepted as Acanthotrigonia cazadoriana (Wilckens, 1907) † (unaccepted > superseded combination)
Species Trigonia cerulia Whitfield, 1885 † accepted as Kauffmanella cerulia (Whitfield, 1885) † (unaccepted > superseded combination)
Species Trigonia chacaicoensis Lambert, 1944 † accepted as Eoanditrigonia chacaicoensis (Lambert, 1944) † (unaccepted > superseded combination)
Species Trigonia chariensis Kitchin, 1903 † accepted as Trigonia elongata J. De C. Sowerby, 1823 † (unaccepted > junior subjective synonym)
Species Trigonia cherahilensis Mongin, 1951 † accepted as Lutetigonia cherahilensis (Mongin, 1951) † (unaccepted > superseded combination)
Species Trigonia chivensis Arkhangelsky, 1916 † accepted as Incomatiella chivensis (Arkhangelsky, 1916) † (unaccepted > superseded combination)
Species Trigonia chubutensis Feruglio, 1934 † accepted as Frenguelliella chubutensis (Feruglio, 1934) † (unaccepted > superseded combination)
Species Trigonia chunumayensis Jaworski, 1915 † accepted as Echevarria chunumayensis (Jaworski, 1915) † (unaccepted > superseded combination)
Species Trigonia churchi F. M. Anderson, 1958 † accepted as Notoscabrotrigonia evansana (F. B. Meek, 1858) † (unaccepted > junior subjective synonym)
Species Trigonia cincta Agassiz, 1840 † accepted as Quadratotrigonia cincta (Agassiz, 1840) † (unaccepted > superseded combination)
Species Trigonia cinctuta Etheridge, 1902 † accepted as Nototrigonia cinctuta (Etheridge, 1902) † (unaccepted > superseded combination)
Species Trigonia clathrata Agassiz, 1840 † accepted as Myophorella clathrata (Agassiz, 1840) † (unaccepted > superseded combination)
Species Trigonia clavellata Parkinson, 1811 † accepted as Myophorella clavellata (Parkinson, 1811) † (unaccepted > superseded combination)
Species Trigonia clavigera Cragin, 1893 † accepted as Praescabrotrigonia clavigera (Cragin, 1893) † (unaccepted > superseded combination)
Species Trigonia clavulosa Rigaux & Sauvage, 1868 † accepted as Orthotrigonia clavulosa (Rigaux & Sauvage, 1868) † (unaccepted > superseded combination)
Species Trigonia clivosa Credner, 1863 † accepted as Myophorella clivosa (Credner, 1863) † (unaccepted > superseded combination)
Species Trigonia clytia A. d'Orbigny, 1850 † accepted as Vaugonina clytia (A. d'Orbigny, 1850) † (unaccepted > superseded combination)
Species Trigonia coihuicoensis C. E. Weaver, 1931 † accepted as Leanzatrigonia coihuicoensis (C. E. Weaver, 1931) † (unaccepted > superseded combination)
Species Trigonia collombi Vilanova y Piera, 1863 † accepted as Syrotrigonia collombi (Vilanova y Piera, 1863) † (unaccepted > superseded combination)
Species Trigonia columbiana E. L. Packard, 1921 † accepted as Columbitrigonia columbiana (E. L. Packard, 1921) † (unaccepted > superseded combination)
Species Trigonia colusaensis F. M. Anderson, 1958 † accepted as Yaadia leana (Gabb, 1877) † (unaccepted > junior subjective synonym)
Species Trigonia comberjonensis Strand, 1928 † accepted as Orthotrigonia comberjonensis (Strand, 1928) † (unaccepted > superseded combination)
Species Trigonia compta Lycett, 1863 † accepted as Gerasimovella compta (Lycett, 1863) † (unaccepted > superseded combination)
Species Trigonia condoni E. L. Packard, 1921 † accepted as Columbitrigonia condoni (E. L. Packard, 1921) † (unaccepted > superseded combination)
Species Trigonia conjungens J. Phillips, 1829 † accepted as Galliciella conjungens (J. Phillips, 1829) † (unaccepted > superseded combination)
Species Trigonia conradi F. B. Meek & Hayden, 1860 † accepted as Vaugoniella conradi (F. B. Meek & Hayden, 1860) † (unaccepted > superseded combination)
Species Trigonia consanguinea R. A. Philippi, 1899 † accepted as Anditrigonia eximia (R. A. Philippi, 1899) † accepted as Damborenella eximia (R. A. Philippi, 1899) † (unaccepted > junior subjective synonym)
Species Trigonia constantii A. d'Orbigny, 1844 † accepted as Macheromenilia constantii (A. d'Orbigny, 1844) † (unaccepted > superseded combination)
Species Trigonia coquandi Lissón, 1930 † accepted as Buchotrigonia angulifera (Stoliczka, 1871) † (junior objective synonym of Trigonia angulifera Stoliczka, 1871)
Species Trigonia coquandiana A. d'Orbigny, 1844 † accepted as Lycettitrigonia coquandiana (A. d'Orbigny, 1844) † (unaccepted > superseded combination)
Species Trigonia corallina A. d'Orbigny, 1850 † accepted as Myophorelloides corallinus (A. d'Orbigny, 1850) † (unaccepted > superseded combination)
Species Trigonia costatula F. A. Quenstedt, 1857 † (unaccepted > junior homonym, junior homonym of Trigonia costatula Lycett, 1850)
Species Trigonia costigera Lycett, 1879 † (unaccepted > superseded combination)
Species Trigonia couzonensis Riche, 1904 † (unaccepted > superseded combination)
Species Trigonia covuncoensis Lambert, 1944 † (unaccepted > superseded combination)
Species Trigonia cragini Stoyanow, 1949 † (unaccepted > superseded combination)
Species Trigonia crassa Kitchin, 1903 † (unaccepted > junior subjective synonym)
Species Trigonia crassidens R. A. Philippi, 1899 † (unaccepted > junior subjective synonym)
Species Trigonia crenifera Stoliczka, 1871 † (unaccepted > superseded combination)
Species Trigonia crenulata Lamarck, 1819 † (unaccepted > superseded combination)
Species Trigonia crenulifera Lycett, 1877 † (unaccepted > superseded combination)
Species Trigonia cricki R. B. Newton, 1909 † (unaccepted > superseded combination)
Species Trigonia cristagalli Bigot, 1893 † (unaccepted > superseded combination)
Species Trigonia culleni Lycett, 1877 † (unaccepted > superseded combination)
Species Trigonia cuneiformis Conrad, 1852 † (unaccepted > superseded combination)
Species Trigonia cunningtoni Lycett, 1875 † (unaccepted > superseded combination)
Species Trigonia cuspidata J. De C. Sowerby, 1826 † (unaccepted > superseded combination)
Species Trigonia daedalea Parkinson, 1811 † (unaccepted > superseded combination)
Species Trigonia darwaseana Romanovsky, 1890 † (unaccepted > superseded combination)
Species Trigonia datemasamunei Yehara, 1915 † (unaccepted > superseded combination)
Species Trigonia dawsoni Whiteaves, 1878 † (unaccepted > superseded combination)
Species Trigonia debilis Lycett, 1877 † (unaccepted > superseded combination)
Species Trigonia debuchii Geinitz, 1840 † (unaccepted > superseded combination)
Species Trigonia deckeina Kubota, 1952 † (unaccepted > superseded combination)
Species Trigonia decora Stoliczka, 1871 † (unaccepted > superseded combination)
Species Trigonia delafossei Bayle & Coquand, 1851 † (unaccepted > superseded combination)
Species Trigonia densestriata Behrendsen, 1892 † (unaccepted > superseded combination)
Species Trigonia densicostata P. Marshall, 1919 † (unaccepted > superseded combination, junior homonym of Trigonia densicostata Roeder, 1882)
Species Trigonia densinoda Etheridge, 1881 † (unaccepted > superseded combination)
Species Trigonia depauperata Douvillé, 1916 † (unaccepted > superseded combination)
Species Trigonia depereti Riche, 1904 † (unaccepted > superseded combination)
Species Trigonia deschutensis E. L. Packard, 1921 † (unaccepted > junior subjective synonym)
Species Trigonia deshayesi Vilanova y Piera, 1863 † (unaccepted > superseded combination)
Species Trigonia deslongchampsii Munier-Chalmas, 1865 † (unaccepted > superseded combination)
Species Trigonia detrita Terquem & Jourdy, 1869 † (unaccepted > superseded combination)
Species Trigonia dhosaensis Kitchin, 1903 † (unaccepted > superseded combination)
Species Trigonia dietrichi E. Lange, 1914 † (unaccepted > superseded combination)
Species Trigonia dilapsa Yehara, 1923 † (unaccepted > superseded combination)
Species Trigonia discors R. A. Philippi, 1899 † (unaccepted > superseded combination)
Species Trigonia disparilis A. d'Orbigny, 1844 † (unaccepted > superseded combination)
Species Trigonia distans Conrad, 1852 † (unaccepted > superseded combination)
Species Trigonia distans Coquand, 1862 † (unaccepted > junior homonym, junior homonym of Trigonia distans Conrad, 1852; replaced by Lyriodon ethra Coquand, 1880)
Species Trigonia distincta Kitchin, 1903 † (unaccepted > superseded combination)
Species Trigonia diversicostata Whiteaves, 1876 † (unaccepted > superseded combination)
Species Trigonia doroschini Eichwald, 1871 † (unaccepted > superseded combination)
Species Trigonia douvillei El Din, 1955 † (unaccepted, junior homonym of Trigonia douvillei Lissón, 1930)
Species Trigonia douvillei Lissón, 1930 † (unaccepted > superseded combination)
Species Trigonia dubia Kitchin, 1903 † (unaccepted > superseded combination, junior homonym of Trigonia dubia O. Boettger, 1880 and T. dubia G. B. Sowerby II, 1884)
Species Trigonia dumblei Stoyanow, 1949 † (unaccepted > superseded combination)
Species Trigonia dunkeri Hagenow [sic] † (unaccepted > nomen nudum, attributed to Hagenow by Boll (1851), but not recorded from Hagenow)
Species Trigonia dunscombensis Lycett, 1877 † (unaccepted > superseded combination)
Species Trigonia duplicata J. Sowerby, 1819 † (unaccepted > superseded combination)
Species Trigonia eccentrica Parkinson, 1811 † (unaccepted > superseded combination)
Species Trigonia echinulata Coquand, 1859 † (unaccepted > nomen nudum, no description; potentially misspelling of Trigonia echinata d'Orbigny, 1850)
Species Trigonia elegans W. H. Baily, 1855 † (unaccepted > superseded combination)
Species Trigonia elegantissima F. B. Meek, 1873 † (unaccepted > superseded combination)
Species Trigonia elisae Briart & Cornet, 1868 † (unaccepted > superseded combination)
Species Trigonia emoryi Conrad, 1857 † (unaccepted > superseded combination)
Species Trigonia emoryoides Trechmann, 1927 † (unaccepted > superseded combination)
Species Trigonia engeli Benecke, 1905 † (unaccepted > superseded combination)
Species Trigonia erycina R. A. Philippi, 1899 † (unaccepted > superseded combination)
Species Trigonia etheridgei Lycett, 1875 † (unaccepted > superseded combination)
Species Trigonia eudesi Bigot, 1893 † (unaccepted > superseded combination)
Species Trigonia eufalensis Gabb, 1860 † (unaccepted > superseded combination)
Species Trigonia eufaulensis [sic] † (unaccepted > misspelling - incorrect subsequent spelling)
Species Trigonia eugenii Bigot, 1893 † (unaccepted > superseded combination)
Species Trigonia evansana F. B. Meek, 1858 † (unaccepted > superseded combination)
Species Trigonia exaltata Lycett, 1877 † (unaccepted > superseded combination)
Species Trigonia eximia R. A. Philippi, 1899 † (unaccepted > superseded combination)
Species Trigonia exortiva Kitchin, 1903 † (unaccepted > superseded combination)
Species Trigonia exotica Möricke, 1894 † (unaccepted > superseded combination)
Species Trigonia falcki Rouillier & Vosinsky, 1849 † (unaccepted > superseded combination)
Species Trigonia ferganensis Arkhangelsky, 1916 † (unaccepted > superseded combination)
Species Trigonia ferryi Munier-Chalmas, 1865 † (unaccepted > superseded combination)
Species Trigonia fischeri Bigot, 1893 † (unaccepted, junior homonym of Trigonia fischeri Munier-Chalmas, 1882)
Species Trigonia fitchi E. L. Packard, 1921 † (unaccepted > superseded combination)
Species Trigonia fittoni Leymerie, 1842 † (unaccepted > superseded combination)
Species Trigonia flecta J. Morris & Lycett, 1853 † (unaccepted > superseded combination)
Species Trigonia flexicostata Burwash, 1914 † (unaccepted > superseded combination)
Species Trigonia flexicostata Fritzsche, 1924 † (unaccepted > superseded combination, junior homonym of Trigonia flexicostata Burwash, 1914)
Species Trigonia forbesii Lycett, 1875 † (unaccepted > superseded combination)
Species Trigonia formosa Lycett, 1860 † (unaccepted > superseded combination)
Species Trigonia forti Lissón, 1930 † (unaccepted > superseded combination)
Species Trigonia foveata R. A. Philippi, 1899 † (unaccepted > superseded combination)
Species Trigonia freixialensis Choffat, 1885 † (unaccepted > superseded combination)
Species Trigonia frenguellii Mariñelarena, 1959 † (unaccepted > superseded combination)
Species Trigonia gadoisi Cossmann, 1911 † (unaccepted > superseded combination)
Species Trigonia gampsorrhyncha R. A. Philippi, 1899 † (unaccepted > superseded combination)
Species Trigonia gemmata Lycett, 1853 † (unaccepted > superseded combination)
Species Trigonia geographica Agassiz, 1840 † (unaccepted > superseded combination)
Species Trigonia gerthi Lissón, 1930 † (unaccepted > superseded combination)
Species Trigonia geulemensis F. Vogel, 1895 † (unaccepted > superseded combination)
Species Trigonia gibboniana I. Lea, 1840 † (unaccepted > superseded combination)
Species Trigonia gilleti Basse, 1932 † (unaccepted > superseded combination)
Species Trigonia glaciana Sturm, 1901 † (unaccepted > superseded combination)
Species Trigonia glaphyra R. A. Philippi, 1899 † (unaccepted > superseded combination)
Species Trigonia glyptica H. Woods, 1917 † (unaccepted > superseded combination)
Species Trigonia goldfusii Zieten, 1833 † (unaccepted > misspelling - incorrect original spelling)
Species Trigonia goldfussii Agassiz, 1840 † (unaccepted > junior homonym, junior homonym of Trigonia goldfussii Zieten, 1833)
Species Trigonia goodellii Cragin, 1897 † (unaccepted > superseded combination)
Species Trigonia gordoni M. Whitney, 1952 † (unaccepted > superseded combination)
Species Trigonia gottschei Möricke, 1894 † (unaccepted > superseded combination)
Species Trigonia gracilis Kitchin, 1903 † (unaccepted > superseded combination)
Species Trigonia griesbachi Lycett, 1872 † (unaccepted > superseded combination)
Species Trigonia groeberi C. E. Weaver, 1931 † (unaccepted > superseded combination)
Species Trigonia gryphitica Möricke, 1894 † (unaccepted > junior subjective synonym)
Species Trigonia guadalupae Böse, 1910 † (unaccepted > superseded combination)
Species Trigonia guildi Stoyanow, 1949 † (unaccepted > superseded combination)
Species Trigonia guisei Lycett, 1883 † (unaccepted > superseded combination)
Species Trigonia hanetiana A. d'Orbigny, 1841 † (unaccepted > superseded combination)
Species Trigonia harpa Leymerie, 1842 † (unaccepted > junior subjective synonym)
Species Trigonia hauchecornei M. Schmidt, 1905 † (unaccepted > superseded combination)
Species Trigonia haupti Lambert, 1944 † (unaccepted > superseded combination)
Species Trigonia hauterivica Strand, 1928 † (unaccepted > junior subjective synonym)
Species Trigonia haynensis Stephenson, 1923 † (unaccepted > superseded combination)
Species Trigonia heberti Munier-Chalmas, 1865 † (unaccepted > junior subjective synonym)
Species Trigonia hegiensis Saeki, 1925 † (unaccepted > superseded combination)
Species Trigonia hemisphaerica Lycett, 1853 † (unaccepted > superseded combination)
Species Trigonia hemphilli F. M. Anderson, 1958 † (unaccepted > superseded combination)
Species Trigonia hennigi E. Lange, 1914 † (unaccepted > superseded combination)
Species Trigonia heterosculpta Stanton, 1901 † (unaccepted > superseded combination)
Species Trigonia higazyi Abbass, 1962 † (unaccepted > superseded combination)
Species Trigonia hispida Kitchin, 1903 † (unaccepted > superseded combination)
Species Trigonia hokkaidoana Yehara, 1915 † (unaccepted > superseded combination)
Species Trigonia holubi Kitchin, 1908 † (unaccepted > superseded combination)
Species Trigonia hondaana I. Lea, 1840 † (unaccepted > superseded combination)
Species Trigonia hopkinsi Olsson, 1944 † (unaccepted > superseded combination)
Species Trigonia hosourensis Yokoyama, 1904 † (unaccepted > superseded combination)
Species Trigonia howitti McCoy, 1875 † (unaccepted > superseded combination)
Species Trigonia hudlestoni Lycett, 1877 † (unaccepted > superseded combination)
Species Trigonia huenickeni H. A. Leanza & Garate Zubillaga, 1985 † (unaccepted > superseded combination)
Species Trigonia humboldtii Buch, 1839 † (unaccepted > superseded combination)
Species Trigonia hyriiformis Wilckens, 1910 † (unaccepted > superseded combination)
Species Trigonia imbricata J. De C. Sowerby, 1826 † (unaccepted > superseded combination)
Species Trigonia inca Fritzsche, 1924 † (unaccepted > superseded combination)
Species Trigonia incurva Benett, 1831 † (unaccepted > superseded combination)
Species Trigonia indica Stoliczka, 1871 † (unaccepted > superseded combination)
Species Trigonia inexspectata Jaworski, 1915 † (unaccepted > superseded combination)
Species Trigonia inezana E. L. Packard, 1921 † (unaccepted > junior subjective synonym)
Species Trigonia infraclavellata Möricke, 1894 † (unaccepted > superseded combination)
Species Trigonia ingens Lycett, 1872 † (unaccepted > superseded combination)
Species Trigonia inguschensis Renngarten, 1926 † (unaccepted > superseded combination)
Species Trigonia inornata A. d'Orbigny, 1844 † (unaccepted > superseded combination)
Species Trigonia intersitans Tate, 1896 † (unaccepted > superseded combination)
Species Trigonia irregularis Seebach, 1864 † (unaccepted > superseded combination)
Species Trigonia ivantischini Kulzhinskaya-Voronets, 1936 † (unaccepted > superseded combination)
Species Trigonia jacksonensis E. L. Packard, 1921 † (unaccepted > superseded combination)
Species Trigonia jakshysaurensis Luppov, 1932 † (unaccepted > superseded combination)
Species Trigonia janenschi E. Lange, 1914 † (unaccepted > superseded combination)
Species Trigonia japonica Yehara, 1923 † (unaccepted > superseded combination)
Species Trigonia joassi Lycett, 1874 † (unaccepted > superseded combination)
Species Trigonia jonioi Rouillier & Vosinsky, 1849 † (unaccepted > superseded combination)
Species Trigonia jumarensis Kitchin, 1903 † (unaccepted > superseded combination)
Species Trigonia kawhiana Trechmann, 1923 † (unaccepted > superseded combination)
Species Trigonia keepingi Lycett, 1877 † (unaccepted > superseded combination)
Species Trigonia kerfornei Bigot, 1893 † (unaccepted > superseded combination)
Species Trigonia kidugalloensis L. R. Cox, 1965 † (unaccepted > superseded combination)
Species Trigonia kikuchiana Yokoyama, 1891 † (unaccepted > superseded combination)
Species Trigonia kimurai Tokunaga & Shimizu, 1926 † (unaccepted > superseded combination)
Species Trigonia kitchini E. H. L. Schwarz, 1915 † (unaccepted > superseded combination)
Species Trigonia kitchini Stoyanow, 1949 † (unaccepted > junior homonym, junior homonym of Trigonia kitchini E. H. L. Schwarz, 1917 and T. kitchini Strand, 1928)
Species Trigonia klamathonia F. M. Anderson, 1958 † (unaccepted > superseded combination)
Species Trigonia knighti Pringle, 1960 † (unaccepted > superseded combination)
Species Trigonia kobyi Choffat, 1885 † (unaccepted > superseded combination)
Species Trigonia kotoi Yehara, 1915 † (unaccepted > superseded combination)
Species Trigonia kraussi Kitchin, 1908 † (unaccepted > superseded combination)
Species Trigonia krenkeli E. Lange, 1914 † (unaccepted > superseded combination)
Species Trigonia kuehni G. Müller, 1900 † (unaccepted > superseded combination)
Species Trigonia kuemmeli Weller, 1907 † (unaccepted > superseded combination)
Species Trigonia kurri Oppel, 1857 † (unaccepted > superseded combination)
Species Trigonia kutchensis Kitchin, 1903 † (unaccepted > superseded combination)
Species Trigonia laevicostata Redlich, 1894 † (unaccepted > superseded combination)
Species Trigonia laevigata Zieten, 1833 † (unaccepted > superseded combination)
Species Trigonia laeviuscula Lycett, 1875 † (unaccepted > superseded combination)
Species Trigonia lajoyei Leymerie, 1842 † (unaccepted > junior subjective synonym)
Species Trigonia lamarckii Matheron, 1843 † (unaccepted > superseded combination, invalid; not Gray, 1838)
Species Trigonia langrunensis Bigot, 1893 † (unaccepted > superseded combination)
Species Trigonia lata Benett, 1831 † (unaccepted > nomen nudum, no description, no figure)
Species Trigonia leana Gabb, 1877 † (unaccepted > superseded combination)
Species Trigonia leanzai Lambert, 1944 † (unaccepted > superseded combination)
Species Trigonia lepida R. A. Philippi, 1899 † (unaccepted > superseded combination)
Species Trigonia leucothea R. A. Philippi, 1899 † (unaccepted > superseded combination)
Species Trigonia lewisi Blanckenhorn, 1890 † (unaccepted > superseded combination)
Species Trigonia libanotica H. E. Vokes, 1946 † (unaccepted > superseded combination)
Species Trigonia limbata A. d'Orbigny, 1844 † (unaccepted > superseded combination)
Species Trigonia lineata C. Moore, 1870 † (unaccepted > superseded combination)
Species Trigonia lingonensis Dumortier, 1869 † (unaccepted > superseded combination)
Species Trigonia literata G. Young & J. Bird, 1828 † (unaccepted > superseded combination)
Species Trigonia loewinsonlessingi Renngarten, 1926 † (unaccepted > superseded combination)
Species Trigonia longa Agassiz, 1840 † (unaccepted > superseded combination)
Species Trigonia longiloba Jimbō, 1894 † (unaccepted > superseded combination)
Species Trigonia lorentii Dana, 1849 † (unaccepted > superseded combination)
Species Trigonia loutfyi Abbass, 1962 † (unaccepted > superseded combination)
Species Trigonia ludovicae Briart & Cornet, 1868 † (unaccepted > superseded combination)
Species Trigonia lusitanica Sharpe, 1850 † (unaccepted > superseded combination)
Species Trigonia lycettensis Strand, 1928 † (unaccepted > superseded combination)
Species Trigonia lycetti Gottsche, 1878 † (unaccepted > superseded combination)
Species Trigonia lycettii Walford, 1885 † (unaccepted > junior homonym, junior homonym of Trigonia lycetti Gottsche, 1878)
Species Trigonia lyrata Deshayes, 1858 † (unaccepted > junior objective synonym, attributed to d'Orbigny by Deshayes, referring to the Prodrome, which was published in 1850; T. lyrata is introduced as a replacement name for T. litterata [sic] Phillips, non Goldfuss; however, Phillips correctly uses T. literata Young & Bird, 1828.)
Species Trigonia maestrichtiana Briart, 1888 † (unaccepted > superseded combination)
Species Trigonia magharensis Abbass, 1962 † (unaccepted > superseded combination)
Species Trigonia magna Benett, 1831 † (unaccepted > nomen nudum, no description, no figure)
Species Trigonia malladae Choffat, 1885 † (unaccepted > superseded combination)
Species Trigonia maloneana Stoyanow, 1949 † (unaccepted > superseded combination)
Species Trigonia mamillata Kitchin, 1903 † (unaccepted > superseded combination)
Species Trigonia manflarum R. A. Philippi, 1899 † (unaccepted > superseded combination)
Species Trigonia mangyshlakensis Luppov, 1932 † (unaccepted > superseded combination)
Species Trigonia manseli Lycett, 1874 † (unaccepted > superseded combination)
Species Trigonia margaritifera J. Böhm, 1904 † (unaccepted > superseded combination)
Species Trigonia marionensis Stephenson, 1923 † (unaccepted > superseded combination)
Species Trigonia matapuana Krenkel, 1911 † (unaccepted > superseded combination)
Species Trigonia mathewsi E. F. Richards, 1947 † (unaccepted > superseded combination)
Species Trigonia maudensis Whiteaves, 1884 † (unaccepted > superseded combination)
Species Trigonia mearnsi Stoyanow, 1949 † (unaccepted > superseded combination)
Species Trigonia melhasei F. M. Anderson, 1958 † (unaccepted > superseded combination)
Species Trigonia meriani Agassiz, 1840 † (unaccepted > junior subjective synonym)
Species Trigonia meridiana H. Woods, 1917 † (unaccepted > superseded combination)
Species Trigonia mesembria Tenison Woods, 1883 † (unaccepted > junior subjective synonym)
Species Trigonia metzensis Strand, 1928 † (unaccepted > superseded combination)
Species Trigonia meyeri Lycett, 1875 † (unaccepted > superseded combination)
Species Trigonia mindoroensis Hayasaka, 1943 † (unaccepted > superseded combination)
Species Trigonia minuta Stoliczka, 1871 † (unaccepted > superseded combination)
Species Trigonia miriana Skwarko, 1963 † (unaccepted > superseded combination)
Species Trigonia modesta Moberg, 1888 † (unaccepted > junior subjective synonym, junior homonym of Trigonia modesta Tate & Blake, 1876)
Species Trigonia monilifera Agassiz, 1840 † (unaccepted > junior subjective synonym)
Species Trigonia mooreana Gabb, 1861 † (unaccepted > superseded combination)
Species Trigonia moorei Lycett, 1870 † (unaccepted > superseded combination)
Species Trigonia mordvilkoae Yanin, 1957 † (unaccepted > nomen nudum, no description)
Species Trigonia moretoni J. Morris & Lycett, 1853 † (unaccepted > superseded combination)
Species Trigonia moriana Yehara, 1927 † (unaccepted > superseded combination)
Species Trigonia mortoni Whitfield, 1885 † (unaccepted > junior subjective synonym)
Species Trigonia moutierensis Lycett, 1872 † (unaccepted > superseded combination)
Species Trigonia muelleri Dietrich, 1933 † (unaccepted > superseded combination)
Species Trigonia nana R. A. Philippi, 1899 † (unaccepted > junior homonym, junior homonym of Trigonia nana Eichwald, 1871, replaced by T. manflatis Strand, 1928)
Species Trigonia nasuta Etheridge, 1872 † (unaccepted > superseded combination)
Species Trigonia naumanni Yehara, 1923 † (unaccepted > superseded combination)
Species Trigonia naviformis Hyatt, 1892 † (unaccepted > superseded combination)
Species Trigonia navis Lamarck, 1819 † (unaccepted > superseded combination)
Species Trigonia neglecta Guéranger, 1867 † (unaccepted > junior subjective synonym)
Species Trigonia neozelanica Suter, 1915 † (unaccepted > superseded combination)
Species Trigonia nepos Paulcke, 1903 † (unaccepted > superseded combination)
Species Trigonia nereis A. d'Orbigny, 1850 † (unaccepted > superseded combination)
Species Trigonia nereis R. A. Philippi, 1899 † (unaccepted > junior homonym, junior homonym of Trigonia nereis d'Orbigny, 1850; replaced by T. tinguiriricae Strand, 1928)
Species Trigonia neumayri Yehara, 1923 † (unaccepted > junior homonym, junior homonym of Trigonia neumayri Choffat, 1885)
Species Trigonia neumayri Choffat, 1885 † (unaccepted > superseded combination)
Species Trigonia neuquensis Burckhardt, 1903 † (unaccepted > superseded combination)
Species Trigonia newcombei E. L. Packard, 1921 † (unaccepted > superseded combination)
Species Trigonia niongalensis E. Lange, 1914 † (unaccepted > superseded combination)
Species Trigonia nodosa J. De C. Sowerby, 1826 † (unaccepted > superseded combination)
Species Trigonia nodulosa Lamarck, 1801 † (unaccepted > unavailable name, Suppressed by ICZN Opinion 327 (1b))
Species Trigonia obliqua Hyatt, 1892 † (unaccepted > superseded combination)
Species Trigonia ogawai Yehara, 1923 † (unaccepted > superseded combination)
Species Trigonia opistolophophora Lambert, 1944 † (unaccepted > superseded combination)
Species Trigonia orbignyana Lissón, 1930 † (unaccepted > superseded combination, junior homonym of Trigonia nodosa var. orbignyana Lycett, 1875)
Species Trigonia orientalis Douvillé, 1916 † (unaccepted > junior homonym, junior homonym of Trigonia orientalis Forbes, 1845; replaced by Trigonia douvillei El Din, 1955)
Species Trigonia orientalis Forbes, 1846 † (unaccepted > superseded combination)
Species Trigonia ornata A. d'Orbigny, 1844 † (unaccepted > superseded combination)
Species Trigonia ovallei R. A. Philippi, 1899 † (unaccepted > superseded combination)
Species Trigonia packardi F. M. Anderson, 1958 † (unaccepted > superseded combination)
Species Trigonia padernensis Petter-Receveur, 1955 † (unaccepted > superseded combination)
Species Trigonia painei Lycett, 1874 † (unaccepted > superseded combination)
Species Trigonia palmata Leymerie, 1842 † (unaccepted > superseded combination)
Species Trigonia pandicosta F. B. Meek, 1864 † (unaccepted > superseded combination)
Species Trigonia papillata Agassiz, 1840 † (unaccepted > junior subjective synonym)
Species Trigonia papuana Glaessner, 1958 † (unaccepted > superseded combination)
Species Trigonia paradisensis Lissón, 1907 † (unaccepted > superseded combination)
Species Trigonia parcinoda Lycett, 1872 † (unaccepted > superseded combination)
Species Trigonia parkinsonii Agassiz, 1840 † (unaccepted > superseded combination)
Species Trigonia parva Kitchin, 1903 † (unaccepted > junior homonym, junior homonym of Trigonia parva Fitton, 1844)
Species Trigonia parva Brüggen, 1910 † (unaccepted > junior homonym, junior homonym of Trigonia parva Fitton, 1844 and Trigonia parva Kitchin, 1903)
Species Trigonia parvula Reuss, 1846 † (unaccepted > junior homonym, junior homonym of Trigonia parvula Agassiz, 1840)
Species Trigonia parvula Agassiz, 1840 † (unaccepted > junior subjective synonym)
Species Trigonia patonensis Basse, 1931 † (unaccepted > superseded combination)
Species Trigonia paucicosta Lycett, 1874 † (unaccepted > superseded combination)
Species Trigonia pavlovi Strémooukhov, 1897 † (unaccepted > superseded combination)
Species Trigonia pellati Munier-Chalmas, 1865 † (unaccepted > junior subjective synonym)
Species Trigonia pennata J. Sowerby, 1819 † (unaccepted > superseded combination)
Species Trigonia percaudata Rollier, 1913 † (unaccepted > superseded combination)
Species Trigonia perlata Agassiz, 1840 † (unaccepted > superseded combination)
Species Trigonia perrinsmithi F. M. Anderson, 1958 † (unaccepted > junior subjective synonym)
Species Trigonia pichimoncolensis Lambert, 1944 † (unaccepted > superseded combination)
Species Trigonia picteti Coquand, 1865 † (unaccepted > superseded combination)
Species Trigonia picunensis C. E. Weaver, 1931 † (unaccepted > junior subjective synonym)
Species Trigonia piriformis Mordvilko, 1932 † (unaccepted > superseded combination)
Species Trigonia pizcuetana Vilanova y Piera, 1863 † (unaccepted > superseded combination)
Species Trigonia plicatocostata Nyst & Galeotti, 1840 † (unaccepted > superseded combination)
Species Trigonia plumasensis Hyatt, 1892 † (unaccepted > superseded combination)
Species Trigonia pocilliformis Yokoyama, 1891 † (unaccepted > superseded combination)
Species Trigonia postera F. A. Quenstedt, 1856 † (unaccepted > superseded combination)
Species Trigonia poststriata Whitfield & Hovey, 1906 † (unaccepted > superseded combination)
Species Trigonia praelonga Loock, 1886 † (unaccepted > junior homonym, junior homonym of Trigonia praelonga Gottsche, 1878)
Species Trigonia praelonga Gottsche, 1878 † (unaccepted > superseded combination)
Species Trigonia producta Lycett, 1860 † (unaccepted > superseded combination)
Species Trigonia proserpina A. d'Orbigny, 1850 † (unaccepted > superseded combination)
Species Trigonia pseudocaudata P. Thomas & A. Péron, 1890 † (unaccepted > junior homonym, junior homonym of Trigonia pseudocaudata Hector, 1886)
Species Trigonia pseudocrenulata Noetling, 1886 † (unaccepted > superseded combination)
Species Trigonia pseudocundata Hector, 1886 † (unaccepted > misspelling - incorrect original spelling)
Species Trigonia pseudoexcentrica Hoppe, 1922 † (unaccepted > superseded combination)
Species Trigonia pseudoindica Arkhangelsky, 1916 † (unaccepted > superseded combination)
Species Trigonia pseudoquadrata Arldt, 1922 † (unaccepted > nomen nudum, no description)
Species Trigonia pseudospinosa de Loriol, 1882 † (unaccepted > superseded combination)
Species Trigonia pseudotransitoria Litschkov, 1932 † (unaccepted > superseded combination)
Species Trigonia pulchella Reuss, 1846 † (unaccepted > junior homonym, junior homonym of Trigonia pulchella Agassiz, 1840)
Species Trigonia pulchella Agassiz, 1840 † (unaccepted > superseded combination)
Species Trigonia pullus J. De C. Sowerby, 1826 † (unaccepted > superseded combination)
Species Trigonia pumila Nilsson, 1827 † (unaccepted > superseded combination)
Species Trigonia pusilla R. A. Philippi, 1899 † (unaccepted > superseded combination)
Species Trigonia pustulosa Nagao, 1930 † (unaccepted > superseded combination)
Species Trigonia pygoscelium Wilckens, 1910 † (unaccepted > superseded combination)
Species Trigonia pyrrha A. d'Orbigny, 1850 † (unaccepted > junior subjective synonym)
Species Trigonia quadrangularis J. Hall & Whitfield, 1877 † (unaccepted > superseded combination)
Species Trigonia quadrata J. De C. Sowerby, 1836 † (unaccepted > junior subjective synonym)
Species Trigonia quadrata Agassiz, 1840 † (unaccepted > junior homonym, junior homonym of Trigonia quadrata J. de C. Sowerby, 1836; replaced by T. deslongchampsi Munier-Chalmas, 1865)
Species Trigonia radiata Benett, 1831 † (unaccepted > superseded combination)
Species Trigonia radixscripta Lambert, 1944 † (unaccepted > superseded combination)
Species Trigonia ranvilliana Bigot, 1893 † (unaccepted > superseded combination)
Species Trigonia rectangularis Gottsche, 1878 † (unaccepted > superseded combination)
Species Trigonia recticosta Lycett, 1872 † (unaccepted > superseded combination)
Species Trigonia recurva Kitchin, 1903 † (unaccepted > superseded combination)
Species Trigonia reesidei Stoyanow, 1949 † (unaccepted > superseded combination)
Species Trigonia regina Wilckens, 1910 † (unaccepted > superseded combination)
Species Trigonia resoluta Stoyanow, 1949 † (unaccepted > superseded combination)
Species Trigonia retrorsa Kitchin, 1903 † (unaccepted > superseded combination)
Species Trigonia reussi Strand, 1928 † (unaccepted > superseded combination)
Species Trigonia rhombifera Romanovsky, 1890 † (unaccepted > superseded combination)
Species Trigonia ribeiroi Choffat, 1885 † (unaccepted > superseded combination)
Species Trigonia robinaldina A. d'Orbigny, 1844 † (unaccepted > superseded combination)
Species Trigonia rogersi Kitchin, 1908 † (unaccepted > superseded combination)
Species Trigonia romanovskii Arkhangelsky, 1916 † (unaccepted > superseded combination)
Species Trigonia romanowskyensis Strand, 1928 † (unaccepted > superseded combination)
Species Trigonia rottweilensis Strand, 1928 † (unaccepted > superseded combination)
Species Trigonia rotundata Yokoyama, 1891 † (unaccepted > superseded combination)
Species Trigonia rotundata Romanovsky, 1878 † (unaccepted > junior homonym, junior homonym of Trigonia rotundata de Loriol, 1861)
Species Trigonia rudis Parkinson, 1811 † (unaccepted > superseded combination)
Species Trigonia saavedra Stoyanow, 1949 † (unaccepted > superseded combination)
Species Trigonia sagawai Yehara, 1927 † (unaccepted > superseded combination)
Species Trigonia sakakurai Yehara, 1923 † (unaccepted > superseded combination)
Species Trigonia sakamotoensis Yehara, 1921 † (unaccepted > superseded combination)
Species Trigonia sanctaecrucis F.-J. Pictet & Campiche, 1866 † (unaccepted > superseded combination)
Species Trigonia sawatai Yehara, 1923 † (unaccepted > superseded combination)
Species Trigonia scabra Lamarck, 1819 † (unaccepted > superseded combination)
Species Trigonia scabricola Lycett, 1875 † (unaccepted > superseded combination)
Species Trigonia scapha Agassiz, 1840 † (unaccepted > superseded combination)
Species Trigonia scarburgensis Lycett, 1863 † (unaccepted > superseded combination)
Species Trigonia schwarzi G. Müller, 1900 † (unaccepted > superseded combination)
Species Trigonia seguenzai Trevisan, 1937 † (unaccepted > superseded combination)
Species Trigonia semicostata R. A. Philippi, 1899 † (unaccepted > junior subjective synonym)
Species Trigonia semiculta Forbes, 1846 † (unaccepted > superseded combination)
Species Trigonia semiornata A. d'Orbigny, 1846 † (unaccepted > junior subjective synonym)
Species Trigonia semisericea H. F. Blanford, 1864 † (unaccepted > nomen nudum, no description or figure)
Species Trigonia semiundulata McCoy, 1866 † (unaccepted > junior subjective synonym)
Species Trigonia senex T. Kobayashi & K. Mori, 1954 † (unaccepted > superseded combination)
Species Trigonia seranensis Krumbeck, 1923 † (unaccepted > superseded combination)
Species Trigonia sharpiana Lycett, 1874 † (unaccepted > superseded combination)
Species Trigonia shepstonei Griesbach, 1871 † (unaccepted > superseded combination)
Species Trigonia sinuata Parkinson, 1811 † (unaccepted > junior subjective synonym)
Species Trigonia smeeii J. De C. Sowerby, 1840 † (unaccepted > superseded combination)
Species Trigonia snaintonensis Lycett, 1877 † (unaccepted > superseded combination)
Species Trigonia spectabilis J. De C. Sowerby, 1826 † (unaccepted > superseded combination)
Species Trigonia spinifera A. d'Orbigny, 1850 † (unaccepted > superseded combination)
Species Trigonia spinosa Parkinson, 1811 † (unaccepted > superseded combination)
Species Trigonia spinulosa G. Young & J. Bird, 1828 † (unaccepted > superseded combination)
Species Trigonia spinulosocostata Pethő, 1906 † (unaccepted > superseded combination)
Species Trigonia spissicostata Kitchin, 1903 † (unaccepted > superseded combination)
Species Trigonia splendida A. F. Leanza, 1941 † (unaccepted > superseded combination)
Species Trigonia staffi E. Lange, 1914 † (unaccepted > superseded combination)
Species Trigonia stantoni Stephenson, 1941 † (unaccepted > superseded combination)
Species Trigonia steinmanni R. A. Philippi, 1899 † (unaccepted > superseded combination)
Species Trigonia steinmanni Lissón, 1930 † (unaccepted > junior homonym, junior homonym of Trigonia steinmanni Philippi, 1899)
Species Trigonia stolleyi R. T. Hill, 1893 † (unaccepted > superseded combination)
Species Trigonia stowi Kitchin, 1908 † (unaccepted > superseded combination)
Species Trigonia sturgisensis Whitfield & Hovey, 1906 † (unaccepted > superseded combination)
Species Trigonia subcrenulata A. d'Orbigny, 1842 † (unaccepted > junior subjective synonym)
Species Trigonia subdaedalea Renngarten, 1926 † (unaccepted > superseded combination)
Species Trigonia subexcentrica A. d'Orbigny, 1850 † (unaccepted > junior objective synonym, unnecessary replacement name for Lyrodon excentricum (Goldfuss, 1837))

Environment

marine, ~~brackish~~, ~~fresh~~, ~~terrestrial~~

Fossil range

fossil only

Original description

Bruguière, J.G. (1789-1792). Encyclopédie méthodique ou par ordre de matières, par une Societe de gens de Lettres, de Savans et D'Artistes. [Methodical encyclopedia or by order of subjects, by a Society of Men of Letters, Scholars and Artists.]. <em>Histoire naturelle des Vers, Paris: Pancoucke.</em> volume 1: i-xviii, 1-344 [Livraison 32, June 1789]; 345-757 [Livraison 48, 13 Feb. 1792] [Dates after Evenhuis, 2003, Zootaxa, 166: 37; Zootaxa, 207, some modified by Evenhuis & Petit 2003 Zootaxa 207:1-4]., available online at https://biodiversitylibrary.org/page/8892006
page(s): XIV [details]

Taxonomic citation

MolluscaBase eds. (2025). MolluscaBase. Trigonia Bruguière, 1789 †. Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=526493 on 2026-10-06

Thematic species database citation

Marine Species Traits editorial board (2026). Marine Species Traits. Trigonia Bruguière, 1789 †. Accessed at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=526493 on 2026-10-06

Taxonomic edit history

Date

action

2010-09-22 10:20:13Z

created

Tran, Bastien

2010-11-02 15:23:18Z

changed

Gofas, Serge

2015-08-23 08:23:43Z

changed

Schneider, Simon

2015-09-25 06:43:50Z

changed

Bouchet, Philippe

2016-03-03 21:03:08Z

changed

Schneider, Simon

2020-02-18 06:52:25Z

changed

Schneider, Simon

2021-01-01 15:56:42Z

changed

Schneider, Simon

[taxonomic tree] [clear cache]

original description Bruguière, J.G. (1789-1792). Encyclopédie méthodique ou par ordre de matières, par une Societe de gens de Lettres, de Savans et D'Artistes. [Methodical encyclopedia or by order of subjects, by a Society of Men of Letters, Scholars and Artists.]. <em>Histoire naturelle des Vers, Paris: Pancoucke.</em> volume 1: i-xviii, 1-344 [Livraison 32, June 1789]; 345-757 [Livraison 48, 13 Feb. 1792] [Dates after Evenhuis, 2003, Zootaxa, 166: 37; Zootaxa, 207, some modified by Evenhuis & Petit 2003 Zootaxa 207:1-4]., available online at https://biodiversitylibrary.org/page/8892006
page(s): XIV [details]

original description (of Lyriodon Bronn, 1834 †) Bronn, H. G. (1834-1838). Lethaea geognostica oder Abbildungen und Beschreibungen der für die Gebirgs-Formationen bezeichnendsten Versteinerungen. Vol. 1, pp. 1-544 (pp. 1-96 [1834]; 97-192 [1835]; 193-288, 384-480 [1836]; 481-544 [1838 (?1837)]. Vol. 2. pp. 545-1346 + 4 pp. unpaginated errata (pp. 545-768 [1837]; 769-1346 [1838]); Atlas, 47 pl. [1837]. Stuttgart, Schweitzerbart. , available online at https://catalog.hathitrust.org/Record/012306831, https://www.biodiversitylibrary.org/page/39076743
page(s): 12 [details]

original description (of Lyrodon G. A. Goldfuss, 1837 †) Goldfuss, G. A. (1833–1841). Petrefacta Germaniae tam ea, quae in Museo Universitatis Regiae Borussicae Fridericiae Wilhelmiae Rhenanae servantur quam alia quaecunque in Museis Hoeninghusiano, Muensteriano aliisque extant, iconibus et descriptionibus illustrata. Zweiter Teil: 312 pp. Düsseldorf: Arnz & Comp. [1-68, pls. LXXII-XCVI, (1833); 69-140, pls. XCVII-CXXI, (1835); 141-224, pls. CXXII-CXLVI, (1837); 225-312, pls. CXLVII-CLXV, (1841)] [publication dates from: Quenstedt, W. (1963). Clavis bibliographica. In: Westphal, F. (ed.), Fossilium Catalogus, I. Animalia, pars 102. 118 pp. s'Gravenhage: Junk.]. [details]

Present

Inaccurate

Introduced: alien

Containing type locality

Definitions

[show lower level...]

To European Nucleotide Archive, ENA (Trigonia)
To Genbank
To NMNH Extant Collection (01875441)
To NMNH Extant Collection (01875442)

Unreviewed

To NMNH Extant Collection (01875441)

Hosted externally

To NMNH Extant Collection (01875442)

Hosted externally