Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             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 †Anomodontia Owen, 1859
                     1 Family †Venyukoviidae Efremov, 1940
                     2 Family †Ostheriidae
                     3 Family †Dicynodontidae Owen, 1860
                     4 Family †Cistecephalidae (Broom, 1903)
                     5 Family †Lystrosauridae Broom, 1903