Fishes
   Class Myxini (Jaekel, 1911) see Subclass Myxinoidea
     Order Myxiniformes - hagfishes
       Family Myxinidae Rafinesque, 1815 - hagfishes
         Subfamily Myxininae
           1 Genus Anopsus Rafinesque, 1815
           2 Genus Gastrobranchus Bloch, 1791
           3 Genus Muraenoblenna Lacepède, 1803
           4 Genus Myxine Linnaeus, 1758
           5 Genus Nemamyxine Richardson, 1958
           6 Genus Neomyxine Richardson, 1953
           7 Genus Notomyxine Nani & Gneri, 1951