Trigonia interlaevigata (FOSSIL) F.A. von Quenstedt,1858 †
Trigonia intersitans (FOSSIL) R. Tate, 1896 †
Trigonia kitchini (FOSSIL) Stoyanow, 1949 †
Trigonia langrunensis (FOSSIL) Bigot, 1893 †
Trigonia latiarealis (FOSSIL) Saveliev, 1960 †
Trigonia laufonensis (FOSSIL) (Rollier, 1912 †)
Trigonia leckenbyi (FOSSIL) Lycett †
Trigonia levyi (FOSSIL) H.A. Leanza, 1993 †
Trigonia libanensis (FOSSIL) Krumbeck, 1905 †
Trigonia lineolata (FOSSIL) A.E.R. Agassiz, 1840 †
Trigonia losadai (FOSSIL) H.A. Leanza, 1993 †
Trigonia lycetti (FOSSIL) Walford, 1885 †
Trigonia maastrichtiana (FOSSIL) Briart, 1888 †
Trigonia maloneana (FOSSIL) Stoyanow, 1949 †
Trigonia maltonensis (FOSSIL) Arkell †
Trigonia marginata (FOSSIL) Damon, 1860 †
Trigonia marwicki (FOSSIL) Fleming, 1987 †
Trigonia mearnsi (FOSSIL) Stoyanow, 1949 †
Trigonia micippe (FOSSIL) R.A. Philippi, 1899 †
Trigonia mirandaensis (FOSSIL) A. Lambert, 1944 †
Trigonia mollesensis (FOSSIL) A. Lambert, 1944 †
Trigonia montanaensis (FOSSIL) (F.B. Meek, 1873 †)
Trigonia munita (FOSSIL) Cragin, 1905 †
Trigonia northamptonensis (FOSSIL) Walford, 1885 †
Trigonia oehlerti (FOSSIL) Bigot, 1893 †
Trigonia orientalis (FOSSIL) E. Forbes, 1846 †
Trigonia orientalis (FOSSIL) J.H.F. Douvillé, 1916 †
Trigonia papuana (FOSSIL) Glaessner, 1958 †
Trigonia patchamensis (FOSSIL) Fürsich & Heinze, 1998 †
Trigonia pcelincevae (FOSSIL) Saveliev, 1960 †
Trigonia picteti (FOSSIL) Coquand, 1865 †
Trigonia plana (FOSSIL) Repin, 2013 †
Trigonia pseudoacuta (FOSSIL) Dickan, 1990 †
Trigonia pseudocaudata (FOSSIL) J. Hector, 1886 †
Trigonia pseudomeriani (FOSSIL) Choffat, 1885 †