[Phylum] Chordata Bateson, 1885 - chordates
   Subphylum Craniata auct.
     Infraphylum Vertebrata Lamarck, 1801 - vertebrates
       Superclass †Thelodontomorphi Jaekel, 1911 [monotypic]
         Class †Thelodonti Jaekel, 1911
           Order †Thelodontiformes Kiaer, 1932
             Family †Thelodontidae Jordan, 1905 (1856)
               Genus †Thelodus Agassiz, 1839