Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
   Gnathostomata
     Teleostomi Bonaparte, 1836
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988], nom. cl. inval. see Clade Tetrapoda Hatschek & Cori 1896 [Laurin 2020]
         Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988], nom. cl. inval. - amniotes see Clade Amniota Haeckel 1866 [Laurin & Reisz 2020]
           Class Reptilia Linnaeus, 1758 [paraphyletic] - reptiles
             Subclass Diapsida Osborn, 1903 - diapsids see Clade Diapsida Osborn 1903 [Gauthier & de Queiroz 2020]
               Infraclass Archosauromorpha Huene, 1946 see Clade Archosauromorpha Huene 1946 [Benton 1985], nom. cl. inval.
                 Superorder Archosauria Cope, 1869 - archosaurs see Clade Archosauria Cope 1869 [Gauthier & Padian 1985], nom. cl. inval.
                   †Dinosauria Owen 1841 [Padian & May 1993], nom. cl. inval. see Clade Dinosauria Owen 1842 [Langer, Novas, Bittencourt, Ezcurra & Gauthier 2020]
                     Order †Ornithischia Seeley, 1887
                       Suborder †Ornithopoda Marsh, 1871 see Infraorder Ornithopoda Marsh, 1881
                         Family †Iguanodontidae Cope, 1869
                           01 ?Genus †Anoplosaurus Seeley, 1879, nom. dub.
                           02 Genus †Craspedodon Dollo, 1883, nom. dub.
                           03 Genus †Callovosaurus Galton, 1980
                           04 Genus †Camptosaurus Marsh, 1885
                           05 Genus †Iguanodon Mantell, 1825
                           06 Genus †Muttaburrasaurus Bartholomai & Molnar, 1981
                           07 Genus †Ouranosaurus Taquet, 1976
                           08 Genus †Probactrosaurus Rozhdestvenskii, 1966
                           09 Genus †Rhabdodon Matheron, 1869, nom. cons.
                           10 Genus †Vectisaurus Hulke, 1879, nom. dub.