Order Chelonia Owen 1842 ( Testudinata Oppel 181 1 ) Chelonida 



Suborder Eunotosauria Watson 1914 Eunotosaurina 



Suborder Amphichelydia Lydekker 1889 Amphichelina 



Suborder Pleurodira Cope 1869 Pleurodirina 



Suborder Cryptodira Cope 1869 Cryptodirina 



Subclass *Ichthyopterygia Owen 1860 *Ichthyopterygia 



Order *Mesosauria Cope 1886 *Mesosaurida 



Order *Ichthyosauria Blainville 1835 *Ichthyosaurida 



Subclass *Synaptosauria Williston 1912 *Synaptosauria 



Order *Proterosauria Seeley 1871 *Proterosaurida 



Order *Sauropterygia Owen 1859 *Sauropterygida 



Suborder *Trachelosauria Brolili 1917 *Tracbelosaurina 



Suborder *Tanysitrachelia Preyer 1931 *Tanysitrachelina 



Suborder *Nothosauria Deecke 1866 *Nothosaurina 



Suborder *Plesiosauria Andrews 1895 *Plesiosaurina 



Suborder *Placodontia Meyer 1863 *Placodontina 



Subclass Lepidosauria Zittel 1890 Lepidosauria 



Order Rhynchocephalia Gunther 1886 Rhynchocepbalida 



Order *Eosuchia Broom 1714 *Eosuchida 



Order Squamata Oppel 181 1 Squamatida 



Suborder Lacertilia Cuvier 1834 Lacertilina 



Suborder Ophidia Brongriart 1799 Ophidina 



Subclass Archosauria Cope 1891 Archosauria 



Order *Thecodontia Owen 1860 *Thecodontida 



Suborder *Pseudosuchia Cope 1891 *Pseudosuchina 



Suborder *Phytosauria Lydekker 1888 *Phytosaurina 



Order Crocodilia Wagler 1830 Crocodilia 



Suborder *Protosuchia Mook 1934 *Protosucbina 



Suborder Mesosuchia Mook 1934 Mesosuchina 



Suborder Eusuchia Mook 1934 Eusuchina 



Suborder Thallatosuchia Mook 1934 Thallatosucbina 



Order *Pterosauria Kaup 1834 *Pterosaurida 



Suborder *Rhamphorhynchoidii Abel 1919 *Rhamphorhynchina 



Suborder *Pterodactyloidea Seeley 1866 *Pterodactylina 



Order *Saurischia Seeley 1888 *Saurischida 



Suborder *Theropoda Marsh 1881 *Theropodina 



Suborder *Sauropoda Marsh 1878 *Sauropodina 



Order *Ornithischia Seeley 1888 *Ornithischida 



Suborder *Ornithopoda Cope 1869 *Ornithopodina 



Suborder *Stegosauria Cope 1880 . *Stegosaurina 



Suborder *Ankylosauria Brown 1908 *Ankylosauria 



Suborder *Ceratopsia Zittel 1890 *Ceratopsina 



Subclass *Synapsida Osborn 1903 *Synapsida 



Order *Pelycosauria Cope 1878 *Pelycosaurida 



Order *Therapsida Broom 1905 *Therapsida 



Suborder *Anningiamorpha Broom 1927 *Anningiamorphina 



Suborder *Dromaesauria Matthew & Brown 1922 *Dromaesaurina 



Suborder *Dinocephalia Broom 1914 *Dinocephalina 



Suborder *Dicynodontia Owen 1859 *Dicynodontina 



Suborder *Theriodontia Owen 1859 *Theriodontina 



Suborder *Ictidosauria Broom 1912 *Ictidosaurina 



Suborder *Protodonta Osborn 1887 *Protodontina 



Class Aves Linnaeus 1 758 Avea 



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