Order Testudines Wagler, 1830 - turtles
   Suborder Cryptodira Cope, 1868
     Superfamily Testudinoidea Batsch, 1788
       Family Emydidae Rafinesque, 1815 - pond turtles
         Subfamily Emydinae Rafinesque, 1815
           Genus Terrapene Merrem, 1820
             Terrapene carolina (Linnaeus, 1758) - eastern box turtle
               1 Terrapene carolina carolina (Linnaeus, 1758) - eastern box turtle
               2 Terrapene carolina bauri Taylor, 1895 - Florida box turtle
               3 Terrapene carolina major (Agassiz, 1857) - Gulf Coast box turtle
               4.1.1 Terrapene carolina mexicana (Gray, 1849) - Mexican box turtle
               4.1.2 Terrapene carolina triunguis (Agassiz, 1857) - three-toed box turtle
               4.2 Terrapene carolina yucatana (Boulenger, 1895) - Yucatan box turtle