[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 Holocephali Bonaparte, 1832 Order †Eugeneodontiformes Zangerl, 1981 Suborder †Eugeneodontoidei Family †Eugeneodontidae Zangerl, 1981 1 Genus †Eugeneodus Zangerl, 1981