Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908 Phylum Chordata Bateson, 1885 - chordates Subphylum Craniata auct. Infraphylum Vertebrata Lamarck, 1801 - vertebrates Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates Eugnathostomata Grade Chondrichthyomorphi [monotypic] Class Chondrichthyes Huxley, 1880 - cartilaginous fishes Superorder †Ctenacanthimorpha Order †Squatinactiformes Zangerl, 1981 [monotypic] 1 Family †Squatinactidae Lund & Zangerl, 1974