Classification of Williams 1953
G. Testudo Linnaeus 1758
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Subg. †Testudo (Hadrianus) Cope 1872
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†Testudo (Hadrianus) corsoni Leidy 1871
†Testudo (Hadrianus) majusculus Hay 1904
Subg. †Testudo (Hesperotestudo) Williams 1950
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†Testudo (Hesperotestudo) amphithorax Cope 1873
†Testudo (Hesperotestudo) angusticeps Matthew 1924
†Testudo (Hesperotestudo) arenivaga Hay 1906
†Testudo (Hesperotestudo) brontops Marsh 1890
†Testudo (Hesperotestudo) ducatelli Collins and Lynn 1936
†Testudo (Hesperotestudo) farri Hay 1908
†Testudo (Hesperotestudo) impensa Hay 1908
†Testudo (Hesperotestudo) orthopygia Cope 1878
†Testudo (Hesperotestudo) osborniana Hay 1904
†Testudo (Hesperotestudo) sellardsi Hay 1916
†Testudo (Hesperotestudo) tumidus Hay 1908
†Testudo (Hesperotestudo) uintensis Gilmore 1915
Invalid names: Eupachemys Leidy 1877 [nomen dubium], Eupachemys obtusus Leidy 1877 [nomen dubium], Testudo crassiscutata Leidy 1889 [nomen dubium], Testudo gilbertii Hay 1899 [nomen dubium], Testudo hayi Sellards 1916 [nomen dubium], Testudo louisekressmani Wark 1929 [nomen dubium], Testudo luciae Hay 1916 [nomen dubium]
†Testudo tedwhitei Williams 1953