Class [Reptilia] Linnaeus, 1758 - reptiles Subclass Lepidosauria Duméril & Bibron, 1839 Order Rhynchocephalia Günther, 1867 - tuataras Suborder †Rhynchosauroidea Gervais, 1859 Family †Mesosuchidae Haughton, 1924 see Family Rhynchosauridae Huxley, 1867