Order Testudines Wagler, 1830 - turtles
   Suborder Cryptodira Cope, 1868
     Superfamily Kinosternoidea Agassiz, 1857
       Family Kinosternidae Agassiz, 1857 - mud and musk turtles
         1 Subfamily Kinosterninae Agassiz, 1857
         2 Subfamily Staurotypinae Gray, 1869