Order Testudines Wagler, 1830 - turtles Suborder Cryptodira Cope, 1868 Superfamily Chelonioidea Oppel, 1811 Family Cheloniidae Oppel, 1811 Subfamily Cheloniinae Oppel, 1811 Genus Natator McCulloch, 1908 [monotypic] Natator depressus (Garman, 1880) - flatback sea turtle