[Phylum] Chordata Bateson, 1885 - chordates
   Subphylum Craniata auct.
     Infraphylum Vertebrata Lamarck, 1801 - vertebrates
       Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
         Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
           Family †Wellingtonellidae Märss, Wilson & Thorsteinsson, 2002, incertae sedis
             1 Genus †Wellingtonella Märss, Wilson & Thorsteinsson, 2002