Order Testudines Wagler, 1830 - turtles
   Suborder Cryptodira Cope, 1868
     Superfamily Testudinoidea Batsch, 1788
       Family Emydidae Rafinesque, 1815 - pond turtles
         Subfamily Deirochelyinae Agassiz, 1857
           Genus Malaclemys Gray, 1844 [monotypic]
             Malaclemys terrapin (Schoepff, 1793) - diamondback terrapin
               Malaclemys terrapin rhizophorarum Fowler, 1906 - mangrove diamondback terrapin