Classification of the genus Trigonarca

G. †Trigonarca Conrad 1862
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Subg. †Trigonarca (Costelliarca) Chiplonkar and Tapaswi 1973
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Trigonarca (Costelliarca) punctulata Kendrick and Vartak 2007
Trigonarca acclivis Conrad 1852
Trigonarca angolensis Rennie 1929
Trigonarca californica Packard 1922
Trigonarca camerunensis Riedel 1933
Trigonarca cardiformis von Koenen 1897
Trigonarca curvatodonta Riedel 1933
Trigonarca excavata Packard 1922
Trigonarca furoni Dartevelle and Freneix 1957
Trigonarca jacksonensis Anderson 1958
Trigonarca jessupae Maury 1930
Trigonarca ligeriensis d'Orbigny 1844
Trigonarca manzadinensis Dartevelle and Freneix 1957
Trigonarca sectilis Packard 1922
Trigonarca semiglabra von Koenen 1897