Template:Williams, 1950

• Williams, E.E. 1950. Testudo cubensis and the evolution of Western Hemisphere tortoises. Bulletin of the American Museum of Natural History 91: 1–36. hdl: 2246/985  
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Nomenclatural acts

New names (23)

• †Cymatholcus scucherti comb. nov.
• †Floridemys nom. nov.
• †Gopherus amohavense comb. nov.
• †Gopherus canyonensis comb. nov.
• Gopherus claticunea comb. nov.
• †Gopherus copei comb. nov.
• †Gopherus edae comb. nov.
• †Gopherus eocalana comb. nov.
• †Gopherus hexagonata comb. nov.
• †Gopherus iemiliae comb. nov.
• †Gopherus incisa comb. nov.
• †Gopherus lhayi comb. nov.
• †Gopherus mcampester comb. nov.
• †Gopherus obrevisterna comb. nov.
• †Gopherus pansa comb. nov.
• †Gopherus praeextans comb. nov.
• †Gopherus riggsi comb. nov.
• †Gopherus rinusitata comb. nov.
• †Gopherus shollandi comb. nov.
• †Gopherus turgida comb. nov.
• †Gopherus undabuna comb. nov.
• †Gopherus vaga comb. nov.
• †Testudo (Hesperotestudo)