Stockoceros is an extinct genus of the North American artiodactyl family Antilocapridae (pronghorns),[2] known from Mexico and the southwestern United States.[1] Its horns are each divided near their base into two prongs of roughly equal length.

Stockoceros
Temporal range: Pleistocene–0.012[1]
Stockoceros conklingi LACM.jpg
S. conklingi skeleton
Stockoceros life restoration.png
Life restoration
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Family: Antilocapridae
Tribe: Stockoceratini
Genus: Stockoceros
Skinner, 1942
Species

The genus survived until about 12,000 years ago, and was present when Paleo-Indians reached North America.[3][4]

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.[5]

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.[6][7]

S. conklingi skull

ReferencesEdit

  1. ^ a b "Stockoceros Skinner 1942". Paleobiology Database. Retrieved 17 December 2021.
  2. ^ Rivals, F.; Semprebon, G. M. (2006). "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 of Vertebrate Paleontology. 26 (2): 495. doi:10.1671/0272-4634(2006)26[495:ACOTDH]2.0.CO;2. S2CID 86134472.
  3. ^ "Stockoceros conklingi Stock 1930". Paleobiology Database. Retrieved 17 December 2021.
  4. ^ "Stockoceros onusrosagris Roosevelt and Burden 1934". Paleobiology Database. Retrieved 17 December 2021.
  5. ^ Rivals, Florent; Semprebon, Gina M. (2006-06-12). "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 of Vertebrate Paleontology. 26 (2): 495–500. doi:10.1671/0272-4634(2006)26[495:ACOTDH]2.0.CO;2. ISSN 0272-4634. S2CID 86134472.
  6. ^ Roosevelt, Q.; Burden, J. W. (1934). "A new species of antilocaprine, Tetrameryx onusrosagris, from a Pleistocene cave deposit in southern Arizona". American Museum Novitates. AMNH (754): 1–4. hdl:2246/2114. Retrieved 2015-11-21.
  7. ^ "Burden's Pronghorn: an Arizona Story". Prehistoric Pronghorn. International Wildlife Museum. Retrieved 2015-11-21.