Class [Reptilia] Linnaeus, 1758 - reptiles Subclass Lepidosauria Duméril & Bibron, 1839 1 Order †Weigeltisauria Kuhn, 1939 [monotypic] 2 Order †Millerosauria Watson, 1957 3 Order Rhynchocephalia Günther, 1867 - tuataras 4 Order †Protorosauria Huxley, 1871