[Phylum] Chordata Bateson, 1885 - chordates
   Subphylum Craniata auct.
     Infraphylum Vertebrata Lamarck, 1801 - vertebrates
       Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
         1 Class †Placodermi McCoy, 1848
         2 Class †Acanthodii Owen, 1846 - acanthodians
         3 Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
         4 Class Osteichthyes Huxley, 1880 - bony fishes and tetrapods see Clade Osteichthyes Huxley 1880 [Moore & Near 2020]