Class Reptilia Linnaeus, 1758 - reptiles Subclass Anapsida Osborn, 1903 - anapsids Order Chelonia Brongniart, 1800 see Class Chelonia Brongniart, 1800 Suborder Cryptodira Cope, 1868 Superfamily Trionychoidea Gray, 1825 Family Kinosternidae Agassiz, 1857 - mud and musk turtles Subfamily Kinosterninae Agassiz, 1857