Chordata Bateson, 1885 - chordates
   Vertebrata Cuvier, 1812 - vertebrates
     1 Pisces
     2 Amphibia Linnaeus, 1758 - amphibians see Class Amphibia Gray, 1825
     3 Reptilia Linnaeus, 1758 - reptiles
     4 Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
     5 Mammalia Linnaeus, 1758 - mammals