[living organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryota Whittaker & Margulis, 1978 see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Bilateria Hatschek, 1888 - bilaterians
         Infrakingdom Deuterostomia Grobben, 1908
           Phylum Chordata Bateson, 1885 - chordates
             Subphylum Vertebrata Cuvier, 1812 - vertebrates
               Infraphylum Gnathostomata Gegenbaur, 1874 - jawed vertebrates see Superclass Gnathostomata Gegenbaur, 1874
                 Superclass Tetrapoda Goodrich, 1930 - tetrapods see [unranked] Tetrapoda Goodrich, 1930
                   Class Reptilia Linnaeus, 1758 - reptiles
                     1 Subclass Aves Linnaeus, 1758
                     2 Subclass Crocodylomorpha Hay, 1930 [monotypic]
                     3 Subclass Rhynchocephalia Günther, 1867 [monotypic] see Order Rhynchocephalia Günther, 1867
                     4 Subclass Squamata Oppel, 1811 see Order Squamata Oppel, 1811
                     5 Subclass Testudinata Oppel, 1811 [monotypic] - testudinates