organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Superclass Tetrapoda Goodrich, 1930 - tetrapods see Clade Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
               Class Reptilia Linnaeus, 1758 - reptiles
                 Subclass †Synapsida Osborn, 1903 - synapsids see Class Synapsida Osborn, 1903
                   Order †Therapsida Broom, 1905 see [unranked] Therapsida Broom, 1905
                     Suborder †Therocephalia Broom, 1903 see [unranked] Therocephalia Broom, 1903
                       1 Family †Crapartinellidae Mendrez, 1975
                       2 Family †Pristerognathidae Broom, 1908
                       3 Family †Moschorhinidae Brink, 1958
                       4 Family †Whaitsiidae Haughton, 1918
                       5 Family †Ictidosuchidae Broom, 1903
                       6 Family †Scaloposauridae Broom, 1914
                       7 Family †Ericiolacertidae Watson & Romer, 1956
                       8 Family †Bauriidae Broom, 1911