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 Lampsilinae see Tribe Lampsilini Ihering, 1901
                       01 Genus Actinonaias Crosse & Fischer, 1894
                       02 Genus Carunculina Simpson, 1898
                       03 Genus Dysnomia Agassiz, 1852
                       04 Genus Ellipsaria Rafinesque, 1820
                       05 Genus Glebula Conrad, 1853
                       06 Genus Lampsilis Rafinesque, 1820
                       07 Genus Lemiox Rafinesque, 1831
                       08 Genus Leptodea Rafinesque, 1820
                       09 Genus Ligumia Swainson, 1840
                       10 Genus Medionidus Simpson, 1900
                       11 Genus Obovaria Rafinesque, 1819
                       12 Genus Pachynaias Fischer & Crosse, 1894
                       13 Genus Proptera Rafinesque, 1819
                       14 Genus Truncilla Rafinesque, 1819
                       15 Genus Villosa Frierson, 1927
                       16 Genus Cyprogenia Agassiz, 1852
                       17 Genus Obliquaria Rafinesque, 1820
                       18 Genus Dromus Simpson, 1900
                       19 Genus Ptychobranchus Simpson, 1900
                       20 Genus Friersonia Ortmann, 1912