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 Mutelacea see Superfamily Muteloidea Gray, 1847
                   Family Etheriidae Deshayes, 1832 - freshwater oysters
                     1 Genus Etheria Lamarck, 1807
                     2 Genus Acostaea d'Orbigny, 1851
                     3 Genus Pseudomulleria Anthony, 1907