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
             Subfamily Ambleminae Rafinesque, 1820
               Tribe Amblemini Rafinesque, 1820
                 Genus Pseudodon Gould, 1844
                   1 Subgenus Bineurus Simpson, 1900
                   2 Subgenus Chrysopseudodon Haas, 1921
                   3 Subgenus Cosmopseudodon Haas, 1920
                   4 Subgenus Diplopseudodon Haas, 1921
                   5 Subgenus Indopseudodon Prashad, 1922
                   6 Subgenus Monodontina Conrad, 1853
                   7 Subgenus Obovalis Simpson, 1900