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 Typhloplanoida Graff, 1908 see Suborder Typhloplanida
                 1 Family Ciliopharyngiellidae Ax, 1952
                 2 Family Byrsophlebidae Graff, 1905
                 3 Family Trigonostomidae Graff, 1905 (1882)
                 4 Family Promesostomidae Hartog, 1964
                 5 Family Typhloplanidae (Luther, 1904) Graff, 1905
                 6 Family Carcharodopharyngidae
                 7 Family Solenopharyngidae Graff, 1882
                 8 Family Typhlorhynchidae
                 9 Family Kytorhynchidae Rieger, 1974