Order Testudines Wagler, 1830 - turtles
   Suborder Cryptodira Cope, 1868
     Superfamily Testudinoidea Batsch, 1788
       Family Testudinidae Batsch, 1788 - tortoises
         Genus Gopherus Rafinesque, 1832
           1 Gopherus agassizii (Cooper, 1861) - Mojave desert tortoise
           2 Gopherus berlandieri (Agassiz, 1857) - Texas tortoise
           3 Gopherus flavomarginatus Legler, 1959 - Bolson tortoise
           4 Gopherus morafkai Murphy, Berry, Edwards, Leviton, Lathrop & Riedle, 2011 - Sonoran desert tortoise
           5 Gopherus polyphemus (Daudin, 1801) - gopher tortoise