Phylum Mollusca Linnaeus, 1758 - molluscs
Class Bivalvia Linnaeus, 1758 - bivalves
Subclass Palaeoheterodonta Newell, 1965
see Clade Palaeoheterodonta Newell, 1965
Order Unionida Gray, 1854
Superfamily Unionoidea Rafinesque, 1820
Family Unionidae Rafinesque, 1820 - pearly mussels
Genus Richtofenia Vokes, 1980, orth. inval.
see Genus Richthofenia Modell, 1964, nom. illeg.