Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
   1 Amphibia Gray 1825 [Gauthier, Kluge & Rowe 1988] - amphibians see Class Amphibia Gray, 1825
   2 Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988] - amniotes