[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Animalia Linnaeus, 1758 - animals
     Branch Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
       Division Bilateria Hatschek, 1888 see Subkingdom Bilateria Hatschek, 1888
         Subdivision Deuterostomia Grobben, 1908 see Infrakingdom Deuterostomia Grobben, 1908
           Phylum Chordata Bateson, 1885 - chordates
             Subphylum Vertebrata Cuvier, 1812 - vertebrates
               Superclass Tetrapoda Goodrich, 1930 - tetrapods see Clade Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
                 Class Reptilia Linnaeus, 1758 - reptiles
                   Subclass Archosauria Cope, 1869 see Division Archosauria Cope, 1869
                     Order †Ornithischia Seeley, 1887
                       Suborder †Ornithopoda Marsh, 1871 see Infraorder Ornithopoda Marsh, 1881
                         Genus †Camptosaurus Marsh, 1885
                         Genus †Iguanodon Mantell, 1825