Order Testudines Wagler, 1830 - turtles
   Suborder Cryptodira Cope, 1868
     Superfamily Testudinoidea Batsch, 1788
       Family Emydidae Rafinesque, 1815 - pond turtles
         Subfamily Emydinae Rafinesque, 1815
           1 Genus Clemmys Ritgen, 1828 [monotypic]
           2 Genus Emys Duméril, 1805
           3 Genus Glyptemys Agassiz, 1857
           4 Genus Terrapene Merrem, 1820