Family Testudinidae Batsch, 1788 - tortoises
   Subfamily Xerobatinae Gaffney & Meylan, 1988
     .1.1.1 [†Testudo copei Koerner, 1940]
     .1.1.2 [†Testudo emiliae Hay, 1908] see Stylemys emiliae (Hay, 1908)
     .1.2 [†Testudo undabuna Loomis, 1909] see Stylemys undabuna (Loomis, 1909)
     .2 [†Testudo milleri Brattstrom, 1961, nom. dub.] see Xerobates mohavetus (Merriam, 1919)
     .3.1 [†Testudo hexagonata Cope, 1893] see Gopherus laticaudatus (Cope, 1893)
     .3.2 [†Testudo laticaudata Cope, 1893] see Gopherus laticaudatus (Cope, 1893)
     1 Genus †Oligopherus Hutchison, 1996 [monotypic]
     2.1 Genus Xerobates Agassiz, 1857 see Genus Gopherus Rafinesque, 1832
     2.2 Genus Gopherus Rafinesque, 1832