Trigonia castani (FOSSIL) Henry, 1876 †
Trigonia castrovillensis (FOSSIL) L.W. Stephenson, 1941 †
Trigonia charlockensis (FOSSIL) Kellaway & Wilson †
Trigonia conferticostata (FOSSIL) Cragin, 1905 †
Trigonia coqueiroensis (FOSSIL) C.J. Maury, 1936 †
Trigonia corderoi (FOSSIL) A. Lambert, 1944 †
Trigonia costata (FOSSIL) Parkinson, 1811 †
Trigonia costata lata (FOSSIL) J. Lycett †
Trigonia cragini (FOSSIL) Stoyanow, 1949 †
Trigonia crebraecostata (FOSSIL) Pugaczewska, 1976 †
Trigonia crenulata (FOSSIL) J.B.P.A. Lamarck, 1819 †
Trigonia crenulifera (FOSSIL) Lycett †
Trigonia culleni (FOSSIL) J. Lycett, 1877 †
Trigonia densestriata (FOSSIL) Behrendsen, 1892 †
Trigonia denticulata (FOSSIL) A.E.R. Agassiz, 1840 †
Trigonia dhosaensis (FOSSIL) Kitchin, 1903 †
Trigonia ehningensis (FOSSIL) (Rollier, 1912 †)
Trigonia elongata (FOSSIL) J. de C. Sowerby, 1823 †
Trigonia elongata angustata (FOSSIL) J. Lycett †
Trigonia elongata gracilis (FOSSIL) Kellaway & Wilson †
Trigonia eptingensis (FOSSIL) Schwarz, 1973 †
Trigonia erbeni (FOSSIL) Alencaster de Cserna,1963 †
Trigonia extentum (FOSSIL) Repman, 1963 †
Trigonia fluehmanni (FOSSIL) R.A. Philippi, 1899 †
Trigonia fortinensis (FOSSIL) A. Lambert, 1944 †
Trigonia gallica (FOSSIL) (Rollier, 1912 †)
Trigonia glosensis (FOSSIL) Bigot, 1893 †
Trigonia guildi (FOSSIL) Stoyanow, 1949 †
Trigonia guisei (FOSSIL) Lycett, 1883 †
Trigonia hemisphaerica (FOSSIL) J. Lycett, 1877 †
Trigonia heva (FOSSIL) Dollfuss, 1863 †
Trigonia hudlestoni (FOSSIL) J. Lycett, 1877 †
Trigonia imbricata (FOSSIL) Sowerby, 1826 †
Trigonia infracostata (FOSSIL) J. Lycett, 1881 †
Trigonia ingens (FOSSIL) Lycett †