[Phylum] Chordata Bateson, 1885 - chordates Subphylum Craniata auct. Infraphylum Vertebrata Lamarck, 1801 - vertebrates Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates Class Chondrichthyes Huxley, 1880 - cartilaginous fishes Subclass Euselachii Hay, 1902 - sharks, rays, and related fossils Infraclass †Hybodonta [monotypic] - hybodonts 1 Order †Hybodontiformes Patterson, 1966