Phylum Chordata Bateson, 1885 - chordates
Ref: Zoological Record, 1998
   Subphylum Vertebrata Cuvier, 1812 - vertebrates
  Ref: Zoological Record, 1998
     Pisces
    Ref: Zoological Record, 1998
       Class Actinopterygii Woodward, 1891 - ray-finned fishes
      Ref: Zoological Record, 1998
         Order Notacanthiformes Goodrich, 1909 - spiny eels
        Ref: Zoological Record, 1998
           Family Halosauridae Günther, 1868 - halosaurs
          Ref: Zoological Record, 1998
           Family Lipogenyidae see Family Notacanthidae Rafinesque, 1815
          Ref: Zoological Record, 1998
           Family Notacanthidae Rafinesque, 1815 - spiny eels
          Ref: Zoological Record, 1998