Kingdom Animalia Linnaeus, 1758 - animals
Phylum Mollusca Linnaeus, 1758 - molluscs
Subphylum Diasoma Runnegar & Pojeta Jr., 1974
see Phylum Mollusca Linnaeus, 1758
Class Pelecypoda Goldfuss, 1820
see Class Bivalvia Linnaeus, 1758
Subclass Heteroconchia Gray, 1854
see Superorder Heteroconchia Gray, 1854
Genus †Pterotrigonia Hoepen, 1929
Subgenus †Scabrotrigonia Dietrich, 1933