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 Anodontinae Rafinesque, 1820 see Tribe Anodontini Rafinesque, 1820
               01 Genus Anodonta Lamarck, 1799
               02 Genus Alasmidonta Say, 1818
               03 Genus Arcidens Simpson, 1900
               04 Genus Arkansia Ortmann & Walker, 1912
               05 Genus Amuranodonta Moskvicheva, 1973
               06 Genus Anodontoides Baker, 1898
               07 Genus Buldowskia Moskvicheva, 1973
               08 Genus Cristaria Schumacher, 1817
               09 Genus Cristariopsis Moskvicheva, 1973
               10 Genus Lasmigona Rafinesque, 1831
               11 Genus Lepidodesma Simpson, 1896
               12 Genus Oguranodonta Kuroda & Habe, 1987
               13 Genus Pegias Simpson, 1900
               14 Genus Pilsbryoconcha Simpson, 1900
               15 Genus Pseudanodonta Bourguignat, 1876
               16 Genus Simpsonella Cockerell, 1903
               17 Genus Simpsoniconcha Frierson, 1914
               18 Genus Strophitus Rafinesque, 1820