Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908 Phylum Chordata Bateson, 1885 - chordates Subphylum Craniata auct. Vertebrata Lamarck, 1801 - vertebrates see Infraphylum Vertebrata Lamarck, 1801 Myopterygii Janvier, 1978 - myopterygians Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates Grade Chondrichthiomorphi see Grade Chondrichthyomorphi Class Chondrichthyes Huxley, 1880 - cartilaginous fishes ?Genus †Polymerolepis Karatajūtė-Talimaa, 1968