Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       1 ?Class? †Acanthodii Owen, 1846
       2 Class Osteichthyes Huxley, 1880 [paraphyletic] - bony fishes see [unranked] Euteleostomi
       2.n Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]