[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
           Order †Omalodontiformes Turner, 1997
             1 Family †Omalodontidae Ginter, Liao & Valenzuela-Ríos, 2008
             2 Family †Aztecodontidae Hairapetian, Ginter & Yazdi, 2008