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
           Order Myxiniformes - hagfishes
             Family Myxinidae Rafinesque, 1815 - hagfishes
               Subfamily Myxininae
                 Genus Myxine Linnaeus, 1758
                   1 Myxine glutinosa Linnaeus, 1758 - Atlantic hagfish
                   2 Myxine limnosa nom. null. see Myxine limosa Girard, 1859