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Author Topic: The little extinct horses from the Bluefish Caves, Yukon (with an added picture)  (Read 1820 times)
Jacques Cinq-Mars
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« on: March 20, 2007, 09:55:13 AM »

All,

Having recently had access to a PDF version of the following paper, I felt a (self-serving) need to share it with people who have a deep interest in Beringian, Late Pleistocene extinct fauna.

Quote
Burke, A. and J. Cinq-Mars. 1998. Paleoethological Reconstruction and Taphonomy of Equus lambei from the Bluefish Caves, Yukon Territory, Canada. Arctic 51(2): 105-115.

ABSTRACT. The Bluefish Caves, northern Yukon, Canada, have yielded evidence of pre-Holocene human occupation of eastern Beringia. The three caves at Bluefish contain a large and complex late Pleistocene fauna in situ. Our research on the mortality patterns and the paleoethology of Equus lambei (an extinct species of horse), a dominant component of the Bluefish assemblages, was based on the dental remains. Mortality profiles for Equus lambei indicate that predators were the likely primary agents of bone accumulation at Cave I, while Caves II and III appear to have accumulated bones through accidental or natural deaths, probably regularly monitored by humans and other predator/scavengers. Paleoethological reconstruction for E. lambei supports the suggestion that the Bluefish Basin was not a polar desert during the late Pleistocene. Finally, the use of tooth height/age tables to establish age profiles of fossil equid populations is demonstrated to be limited to establishing broad, relative age categories.

Key words: Equus lambei, Bluefish Caves, full/late glacial, eastern Beringia, paleoethology, incremental analysis, tooth height/age tables.

RÉSUMÉ. Les grottes du Poisson Bleu situées dans le nord du Yukon au Canada ont fourni la preuve d’une occupation humaine de la Béringie orientale précédant l’Holocène. Les trois grottes contiennent une faune nombreuse et diverse, découverte in situ, datant du Pléistocène tardif. Nos recherches sur les schémas de mortalité et la paléoéthologie de Equus lambei (une expèce de cheval disparue), qui est l’une des composantes principales des communautés de ces grottes, sont fondées sur des restes dentaires. Les profils de mortalité pour Equus lambeiindiquent que l’accumulation des os trouvés dans la grotte I serait surtout l’oeuvre de prédateurs, tandis que ceux des grottes II et III proviennent de morts accidentelles ou naturelles, ces deux grottes ayant probablement été fréquentées sur une base régulière par des humains et d’autres prédateurs/chasseurs. La reconstructionpaléoéthologique de E. lambei étaye l’hypothèse que le bassin du Poisson Bleu n’était pas un désert polaire durant le Pléistocène tardif. Enfin, l’utilité des tables de hauteur de la couronne dentaire en vue d’établir les profils d’âge des populations d’équidés fossiles se limite à la détermination de larges catégories d’âge relatif.

Mots clés: Equus lambei, grottes du Poisson Bleu, Pléniglaciaire/tardiglaciaire, Béringie orientale, paléoéthologie, skeletochronologie, tables de la hauteur/de l’âge des dents

If you are interested in downloading the actual paper, CLICK HERE.

Jacques

Addition

I thought it would be a good idea to present you with a small picture of Equus lambei. The attached is part of a series that was created by George Teichmann for the 10th Anniversary of the Yukon Palaeontology Program. Note that the reconstitution of the horse is based on data obtained from a frozen carcass discovered In the Dawson City (Yukon) area, a few years ago.


* Teichmann.03.jpg (45.67 KB, 432x293 - viewed 412 times.)
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