†Cuspidaria (Tergulina)
Bivalvia - Poromyida - Cuspidariidae
Alternative spelling: Tergulina
Parent taxon: Cuspidaria according to L. R. Cox et al. 1969
See also Sepkoski 2002
Sister taxa: Cuspidaria (Cuspidaria), Cuspidaria (Dianocuspidaria), Cuspidaria (Rhinoclama), Cuspidaria adelaidensis, Cuspidaria alpis, Cuspidaria alpiscivicae, Cuspidaria attenuata, Cuspidaria grandis, Cuspidaria grovensis, Cuspidaria latesulcata, Cuspidaria obesa, Cuspidaria persulcata, Cuspidaria prima, Cuspidaria siliqua, Cuspidaria subrostrata, Cuspidaria triassica, Cuspidaria variabilis, Cuspidaria vorbei
Subtaxa: none
Distribution: found only at FQ (Paleocene of Texas)