living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Mollusca Linnaeus, 1758 - molluscs
           Class Bivalvia Linnaeus, 1758 - bivalves
             Subclass Paleoheterodonta see Order Unionida Gray, 1854
               Order Unionoida see Order Unionida Gray, 1854
                 Superfamily Unionacea Fleming, 1828 see Superfamily Unionoidea Rafinesque, 1820
                   Family Unionidae Rafinesque, 1820 - pearly mussels
                     Subfamily Anodontinae Rafinesque, 1820 see Tribe Anodontini Rafinesque, 1820
                       1 Genus Alasmidonta Say, 1818
                       2 Genus Anodonta Lamarck, 1799
                       3 Genus Anodontoides Baker, 1898
                       4 Genus Arcidens Simpson, 1900
                       5 Genus Arkansia Ortmann & Walker, 1912
                       6 Genus Lasmigona Rafinesque, 1831
                       7 Genus Simpsoniconcha Frierson, 1914
                       8 Genus Strophitus Rafinesque, 1820