Order Testudines Wagler, 1830 - turtles
   Suborder Cryptodira Cope, 1868
     Superfamily Kinosternoidea Agassiz, 1857
       Family Kinosternidae Agassiz, 1857 - mud and musk turtles
         Subfamily Staurotypinae Gray, 1869
           1 Genus Claudius Cope, 1865 [monotypic]
           2 Genus Staurotypus Wagler, 1830