Order Testudines Wagler, 1830 - turtles Suborder Pleurodira Cope, 1864 1 Family Chelidae Gray, 1825 2 Family Pelomedusidae Cope, 1868 - African mud terrapins 3 Family Podocnemididae Cope, 1868 - Madagascan big-headed turtles and American sideneck river turtles