Phylum [Vertebrata] Lamarck, 1801 see Infraphylum Vertebrata Lamarck, 1801
   1 Class Agnatha Cope, 1889
   2 Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
   3 Class †Acanthodii Owen, 1846 - acanthodians
   4 Class †Placodermi McCoy, 1848
   5 Class Osteichthyes Huxley, 1880 - bony fishes and tetrapods see Clade Osteichthyes Huxley 1880 [Moore & Near 2020]
   6 Class Amphibia Linnaeus, 1758 - amphibians see Class Amphibia Gray, 1825
   7 Class Reptilia Linnaeus, 1758 - reptiles
   8 Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
   9 Class Mammalia Linnaeus, 1758 - mammals