Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
         1 Class Amphibia Gray, 1825 [paraphyletic]
         1.n Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988] - amniotes