Phylum [Vertebrata] (Lamarck, 1801) Class Chondrichthyes Huxley, 1880 - cartilaginous fishes Subclass Elasmobranchii Bonaparte, 1838 - shark-like fishes Order †Euselachii Hay, 1902 see Infraclass Euselachii Hay, 1902 Genus †Hybodus Agassiz, 1834