Hesperotestudo osborniana Hay 1904 (turtle)

Reptilia - Testudines - Pantestudinidae

Alternative combinations: Geochelone (Hesperotestudo) osborniana, Testudo (Hesperotestudo) osborniana, Testudo osborniana

Synonyms: Caryoderma snovianum Cope 1886, Geochelone (Caudochelys) arenivaga Hay 1906, Geochelone (Hesperotestudo) impensa Hay 1908, Geochelone farri Hay 1908, Testudo (Hesperotestudo) arenivaga Hay 1906, Testudo (Hesperotestudo) farri Hay 1908, Testudo (Hesperotestudo) impensa Hay 1908, Testudo arenivaga Hay 1906, Testudo farri Hay 1908, Testudo impensa Hay 1908, Testudo snoviana Cope 1886, Xerobates snovianum Cope 1886

Full reference: O. P. Hay. 1904. A new gigantic tortoise from the Miocene of Colorado. Science 19:503-504

Belongs to Hesperotestudo according to E. Vlachos 2018

See also Auffenberg 1962, Auffenberg 1963, Cope 1886, Cope 1889, Hay 1902, Hay 1904, Hay 1906, Hay 1908, Loomis 1909, Osborn 1930, Williams 1953 and Williston 1898

Sister taxa: Eupachemys, Geochelone (Hesperotestudo) angusticeps, Geochelone (Hesperotestudo) orthopygia, Geochelone (Hesperotestudo) wilsoni, Hesperotestudo bermudae, Hesperotestudo crassiscutata, Hesperotestudo ducateli, Hesperotestudo gilbertii, Hesperotestudo orthopygia, Hesperotestudo turgida, Hesperotestudo williamsi, Testudo tedwhitei

Type specimens:

  • Hesperotestudo osborniana: AMNH No. 5868, a partial skeleton. Its type locality is Pawnee Creek (B. Brown AMNH collection), which is in a Hemingfordian/Barstovian terrestrial horizon in the Pawnee Creek Formation of Colorado.
  • Caryoderma snovianum: KU 1262, a set of limb elements (osteoderm and an ungual).
  • Testudo arenivaga: CM 1609, a partial shell (pygal, peripheral, and suprapygal). Its type locality is Agate (2 Miles NE), which is in a Harrisonian terrestrial horizon in the Marsland Formation of Nebraska.
  • Testudo farri: UNSM 10486, a partial shell (partial carapace and complete plastron). Its type locality is Smith River valley, which is in a Barstovian terrestrial horizon in the Deep River Formation of Montana.
  • Testudo impensa: AMNH 5867, a partial skeleton (complete skull, nearly complete shell, both shoulder-girdles, the left humerus, pelvis, 3 injured cervical and 4 caudal vertebrae, and dermal bones). Its type locality is Between Madison and Gallatin rivers, which is in a Hemphillian terrestrial horizon in the Loop Fork Formation of Montana.

Ecology: ground dwelling herbivore-herbivore

Distribution: found only at Pawnee Creek (B. Brown AMNH collection)

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Specimen images are retrieved through the ePANDDA API.

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