Phylum Chordata Bateson, 1885 - chordates
   Subphylum Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
     1 Class Mixini see Class Myxini Jaekel, 1911
     2 Class Cephalaspidomorpha see Class Cephalaspidomorphi Kiaer & Stensiö, 1920
     3 Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
     5 Class Reptilia Linnaeus, 1758 - reptiles
     6 Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
     7 Class Mammalia Linnaeus, 1758 - mammals