Order Testudines Wagler, 1830 - turtles Suborder Cryptodira Cope, 1868 Superfamily Kinosternoidea Agassiz, 1857 1 Family Dermatemydidae Gray, 1870 [monotypic] - Mesoamerican river turtles 2 Family Kinosternidae Agassiz, 1857 - mud and musk turtles