Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908 Phylum Chordata Bateson, 1885 - chordates Subphylum Craniata auct. see Subphylum Vertebrata Cuvier, 1812 Superclass Myxinomorphi [monotypic] Class Myxini (Jaekel, 1911) [monotypic] see Subclass Myxinoidea 1 Order Myxiniformes - hagfishes