Kingdom [Animalia] Linnaeus, 1758 - animals
   Phylum Chordata Bateson, 1885 - chordates
     Subphylum Vertebrata Cuvier, 1812 - vertebrates
       Class Elasmobranchiomorphi see Infraphylum Gnathostomata Gegenbaur, 1874
         Subclass Chondrichthyes Huxley, 1880 see Class Chondrichthyes Huxley, 1880
           Infraclass Bradyodonti (Arambourg & Bertin, 1958)
             Superorder Holocephali Bonaparte, 1831 see Superorder Holocephalimorpha (Lund, 1986)
               1 Order Chimaeriformes Obruchev, 1953 - chimaeras