[Tetrapoda] Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
   1 †Seymouriidae Williston, 1911
   2 †Diadectomorpha Watson, 1917
   3 Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988] - amniotes