Class [Reptilia] Linnaeus, 1758 - reptiles Subclass Lepidosauria Duméril & Bibron, 1839 Order Rhynchocephalia Günther, 1867 - tuataras Suborder †Clarazisauroidea Hoffstetter, 1955 see Order Thalattosauria (Merriam, 1905) Family †Tholodontidae Kuhn, 1960