Kingdom Animalia Linnaeus, 1758 - animals Phylum Craniata Linnaeus, 1758 see Subphylum Vertebrata Cuvier, 1812 Pisces Class Myxini (Jaekel, 1911) see Subclass Myxinoidea Order Myxiniformes - hagfishes 1 Family Myxinidae Rafinesque, 1815 - hagfishes