Order Testudines Wagler, 1830 - turtles
   Suborder Cryptodira Cope, 1868
     Superfamily Testudinoidea Batsch, 1788
       Family Emydidae Rafinesque, 1815 - pond turtles
         Subfamily Deirochelyinae Agassiz, 1857
           1 Genus Chrysemys Gray, 1844
           2 Genus Deirochelys Agassiz, 1857 [monotypic]
           3 Genus Graptemys Agassiz, 1857
           4 Genus Malaclemys Gray, 1844 [monotypic]
           5 Genus Pseudemys Gray, 1856
           6 Genus Trachemys Agassiz, 1857