organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Deuterostomia Grobben, 1908 - deuterostomes 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
                   1 Order †Thecodontia Owen, 1859 see Division Archosauria Cope, 1869
                   2 Order Crocodilia see Order Crocodylia Wagler, 1830
                   3 Order †Saurischia Seeley, 1887 see Clade Saurischia Seeley 1888 [Gauthier, Langer, Novas, Bittencourt & Ezcurra 2020]
                   4 Order †Ornithischia Seeley, 1887
                   5 Order †Pterosauria Kaup, 1834 - pterosaurs