Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
         Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988] - amniotes
           1 Class Reptilia Linnaeus, 1758 [paraphyletic] - reptiles
           1.n1 Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
           1.n2 Class Mammalia Linnaeus, 1758 - mammals