Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Tetrapoda Goodrich, 1930
         Amniota Haeckel, 1866 - 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