Skull reconstruction and ecology of <Emphasis Type="Italic">Urmiatherium polaki</Emphasis> (Bovidae,Mammalia) from the upper Miocene deposits of Maragheh,Iran |
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Authors: | Reza Jafarzadeh Dimitris S Kostopoulos Jahanbakhsh Daneshian |
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Institution: | (1) Department of Geology, Faculty of Science, Tarbiat Moallem University, No. 43, Mofateh Ave, 15614 Tehran, Iran;(2) Department of Geology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece |
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Abstract: | Study of a newly discovered cranial specimen of Urmiatherium polaki from Karaj Abad site in Maragheh, Iran, allows us to describe the complete skull and present a new diagnosis for this late
Miocene mammal species. In the comparative study of the specimen we propose the relative position of the upper teeth as a
reliable metrical method for discriminating bovids of similar size. Based on the available information, a skull reconstruction
of Urmiatherium polaki is provided and its ecological profile is outlined. Both the cranial and dental features of U. polaki indicate a gregarious grazing bovid of medium size, adapted to uneven ground and exhibiting ramming as the predominant fighting
behavior. |
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