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 Popenaiadinae Heard & Guckert, 1970
see Tribe Amblemini Rafinesque, 1820
Genus Popenaias Frierson, 1927