Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908 Phylum Chordata Bateson, 1885 - chordates Subphylum Craniata auct. see Subphylum Vertebrata Cuvier, 1812 Vertebrata (Lamarck, 1801) - vertebrates see Subphylum Vertebrata Cuvier, 1812 Superclass Petromyzontomorphi [monotypic] Class Petromyzontida [monotypic] - lampreys 1 Order Petromyzontiformes Berg, 1940 - lampreys