Stockoceros
{{Short description|Extinct genus of mammals}}
{{Automatic taxobox
| fossil_range = {{fossil range|1.8|0.012|ref={{cite web
| title = Stockoceros Skinner 1942
| work = Paleobiology Database | url = https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=42738
| access-date = 17 December 2021}}}}
| image = Stockoceros conklingi LACM.jpg
| image_caption = S. conklingi skeleton
| image2 = Stockoceros life restoration.png
| image2_caption = Life restoration
| taxon = Stockoceros
| authority = Skinner, 1942
| subdivision_ranks = Species
| subdivision = *S. conklingi Stock, 1930
- S. onusrosagris Roosevelt and Burden, 1934
}}
Stockoceros is an extinct genus of the North American artiodactyl family Antilocapridae (pronghorns),{{Cite journal | last1 = Rivals | first1 = F. | last2 = Semprebon | first2 = G. M. | title = A comparison of the dietary habits of a large sample of the Pleistocene pronghorn Stockoceros onusrosagris from the Papago Springs Cave in Arizona to the modern Antilocapra americana | journal = Journal of Vertebrate Paleontology | volume = 26 | issue = 2 | pages = 495 | year = 2006 | doi = 10.1671/0272-4634(2006)26[495:ACOTDH]2.0.CO;2 | s2cid = 86134472 }} known from what is now Mexico and the southwestern United States. The genus survived until about 12,000 years ago, and was present when Paleo-Indians reached North America.{{cite web | title = Stockoceros conklingi Stock 1930 | work = Paleobiology Database | url = https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=51821 | access-date = 17 December 2021}}{{cite web | title = Stockoceros onusrosagris Roosevelt and Burden 1934 | work = Paleobiology Database | url = https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=51822 | access-date = 17 December 2021}}
Description
Its horns are each divided near their base into two prongs of roughly equal length. Dental microwear studies suggest that S. onusrosagris was a mixed feeder (both grazing and browsing) with a greater intake of grass into its diet than living pronghorn.{{Cite journal |last1=Rivals |first1=Florent |last2=Semprebon |first2=Gina M. |date=2006-06-12 |title=A comparison of the dietary habits of a large sample of the Pleistocene pronghorn Stockoceros onusrosagris from the Papago Springs Cave in Arizona to the modern Antilocapra americana |url=https://doi.org/10.1671/0272-4634(2006)26[495:ACOTDH]2.0.CO;2 |journal=Journal of Vertebrate Paleontology |volume=26 |issue=2 |pages=495–500 |doi=10.1671/0272-4634(2006)26[495:ACOTDH]2.0.CO;2 |s2cid=86134472 |issn=0272-4634}}
One of the co-discoverers and co-describers of S. onusrosagris was Quentin Roosevelt II, grandson of Theodore Roosevelt; he was 14 at the time of the discovery.{{cite journal | last1 = Roosevelt | first1 = Q. | author1-link = Quentin Roosevelt II| last2 = Burden | first2 = J. W. | title = A new species of antilocaprine, Tetrameryx onusrosagris, from a Pleistocene cave deposit in southern Arizona | journal = American Museum Novitates | issue = 754 | pages = 1–4 | publisher = AMNH | date = 1934 | hdl = 2246/2114 | url = http://digitallibrary.amnh.org/handle/2246/2114 | access-date = 2015-11-21}}{{cite web | url = http://www.thewildlifemuseum.org/exhibits/prehistoric-pronghorn/burdens-pronghorn-an-arizona-story/ | title = Burden's Pronghorn: an Arizona Story | website = Prehistoric Pronghorn | publisher = International Wildlife Museum | access-date = 2015-11-21 | archive-date = 2015-11-22 | archive-url = https://web.archive.org/web/20151122052602/http://www.thewildlifemuseum.org/exhibits/prehistoric-pronghorn/burdens-pronghorn-an-arizona-story/ | url-status = dead }}
References
{{Reflist}}
{{Portal|Paleontology}}
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Category:Prehistoric pronghorns
Category:Prehistoric Artiodactyla genera
Category:Extinct mammals of North America
Category:Pleistocene mammals of North America
Category:Fossil taxa described in 1942
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