Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
   Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988] - amniotes
     Synapsida Osborn 1903 [Gauthier et al. 1989]
       Therapsida Broom, 1905
         1 †Biarmosuchia Sigogneau-Russell, 1989
         2.1 †Dinocephalia Seeley, 1894
         2.2.1 †Gorgonopsia Seeley, 1894
         2.2.2.1 †Dicynodontia Owen, 1859
         2.2.2.2 †Eutheriodontia