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 Platyhelminthes Gegenbaur, 1859 - flatworms
           Class Turbellaria Ehrenberg, 1831 - planarians see Subphylum Turbellaria Ehrenberg, 1831
             Order Neorhabdocoela see Order Rhabdocoela Ehrenberg, 1831
               Suborder Dalyellioida (L. v. Graff, 1905) Bresslau, 1933 see Suborder Dalyelliida
                 Family Provorticidae Beklemischev, 1927
                   1 Subfamily Provorticinae Luther, 1962
                   2 Subfamily Kirgisellinae Luther, 1962
                   3 Genus Archivortex Reisinger, 1924
                   4 Genus Oekiocolax Reisinger, 1929