Kingdom [Animalia] Linnaeus, 1758 - animals
   Phylum Chordata Bateson, 1885 - chordates
     Subphylum Vertebrata Cuvier, 1812 - vertebrates
       Class Elasmobranchiomorphi see Infraphylum Gnathostomata Gegenbaur, 1874
         1 Subclass †Placodermi McCoy, 1848 see Class Placodermi McCoy, 1848
         2 Subclass Chondrichthyes Huxley, 1880 see Class Chondrichthyes Huxley, 1880