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
             1 Subfamily Kinosterninae Agassiz, 1857
             2 Subfamily Staurotypinae Gray, 1869