Phylum [Vertebrata] (Lamarck, 1801) Class Reptilia Linnaeus, 1758 - reptiles Subclass Testudinata Oppel, 1811 - testudinates Order Chelonia Brongniart, 1800 see Class Chelonia Brongniart, 1800 Suborder Pleurodira Cope, 1864 Family Pelomedusidae Cope, 1868 - African mud terrapins Genus †Stupendemys Wood, 1976