Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Reptilia Linnaeus, 1758 - reptiles
               Subclass Anapsida Osborn, 1903 - anapsids
                 Order Testudines Wagler, 1830 - turtles
                   Suborder Cryptodira Cope, 1868
                     Family Emydidae Rafinesque, 1815 - pond turtles
                       Genus Pseudemys Gray, 1856
                         1 Pseudemys scripta (Schoepff, 1792) see Trachemys scripta (Thunberg, 1792)
                         2 Pseudemys floridana (Le Conte, 1830) - coastal plain cooter
                         3 Pseudemys concinna (Le Conte, 1830) - river cooter
                         4 Pseudemys rubriventris (Le Conte, 1830) - northern red-bellied cooter
                         5 Pseudemys grayi (Bocourt, 1868)
                         6 Pseudemys ornata (Gray, 1831)
                         7 Pseudemys dorbigni (Duméril & Bibron, 1835) see Trachemys dorbigni (Duméril & Bibron, 1835)
                         8 Pseudemys terrapen (Lacépède, 1788)