Tetrameryx onusrosagris Roosevelt & Burden, 1934:4

Shuler’s pronghorn, Quentin's pronghorn



Taxonomy & Nomenclature

Synonym/s: Stockoceros onusrosagris Roosevelt & Burden, 1934:4; Texoceros onusrosagris Roosevelt & Burden, 1934:4


Treated under Stockoceros by (Marriott & Prothero, 2022).


Conservation Status


Last record: Late Pleistocene



Arizona & New Mexico, USA


Biology & Ecology










Original scientific description:

Roosevelt, Quentin and Burden, J. W. (1934). A new species of antilocaprine, Tetrameryx onusrosagris, from a Pleistocene cave deposit in southern Arizona. American Museum Novitates 754: 1-4.


Other references:

Frick, C. (1937). Horned ruminants of North America. Bulletin of the American Museum of Natural History 69: 1-669.
Harris, Arthur H. (1987). Reconstruction of Mid Wisconsin Environments in Southern New Mexico. National Geographic Research 3(2): 142-151.

Harris, Arthur H. (1993). Quaternary vertebrates of New Mexico, pp. 179-197. In: Vertebrate Paleontology in New Mexico, New Mexico Museum of Natural History, Bulletin 2:i-vii, 1-338.

Kurtén, Björn and Anderson, E. (1980). Pleistocene mammals of North America, 1-442.

Marriott, Katherine L. and Prothero, Donald R. (2022). Variability of the horns of pronghorns (Mammalia: Artiodactyla: Antilocapridae): implications for pronghorn systematics. In: Lucas et al., 2022, Fossil Record 8. New Mexico Museum of Natural History and Science Bulletin 89: 289-293.

Skinner, M. F. (1942). The fauna of Papago Springs Cave, Arizona, and a study of Stockeros; with three new antilocaprines from Nebraska and Arizona. Bulletin of the American Museum of Natural History 80(6): 143-220.


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