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 Heterodonta Neumayr, 1884 see Clade Heterodonta Neumayr, 1884
               Order Myoida Stoliczka, 1870 see Order Myida Stoliczka, 1870
                 Superfamily Gastrochaenacea see Superfamily Gastrochaenoidea Gray, 1840
                   Family Gastrochaenidae Gray, 1840 - rock borers
                     Genus Spengleria Tryon, 1861 see Subgenus Spengleria Tryon, 1861