Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
   Phylum Chordata Bateson, 1885 - chordates
     Subphylum Craniata auct. see Subphylum Vertebrata Cuvier, 1812
       Vertebrata (Lamarck, 1801) - vertebrates see Subphylum Vertebrata Cuvier, 1812
         Myopterygii - myopterygians
           Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
             Grade Chondrichthiomorphi
               Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
                 Subclass Holocephali Bonaparte, 1832
                   Superorder Holocephalimorpha (Lund, 1986)
                     Cochliodontomorpha
                       Order Chimaeriformes Obruchev, 1953 - chimaeras
                         Suborder Chimaeroidei Patterson, 1965
                           Superfamily Chimaeroidea
                             Family Rhinochimaeridae Garman, 1901 - longnose chimaeras
                               1 Genus †Amylodon Storms, 1894
                               2 Genus †Elasmodus Egerton, 1843
                               3 Subfamily Harriottinae
                               4 Subfamily Rhinochimaerinae [monotypic]