Sanson, G. D., Kerr, S. and Gross, K. (2007). Do silica phytoliths really wear mammalian teeth?. J Archaeol Sci 34 (4). Vol 34(4), pp. 526-531.

Title
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Title:		 Do silica phytoliths really wear mammalian teeth?
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Issue:		 J Archaeol Sci 34 (4)
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Series:		 Journal of Archaeological Science
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Volume:		 34 (4)
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Page Start/End:		 526 - 531
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Publication Type:		 Journal
Abstract
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Abstract:		 The hardness of silica phytoliths from four species of grass and mammalian tooth enamel from sheep was tested using a modern nanoindentation tool. We found that silica phytoliths are considerably softer (51--211 Vickers Hardness, HV) than tooth enamel (257--397 HV) and therefore must be re-evaluated as a major source of dental microwear. The hardness results indicate that silica phytoliths do not contribute as much to mammalian dental microwear as previously reported and that exogenous grit and dust are a more likely cause. This premise has implications for interpretations of the causal agents of microwear phenomena in areas such as the evolution of high-crowned teeth in grazing mammals during the Miocene, and the inference of diet from fossilized mammal teeth as reported by some studies in physical anthropology and archaeology.
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Author:		 Gordon D Sanson
Stuart A Kerr
Karlis A Gross
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Year of Publication:		 2007
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Subjects / Periods:
Grass (Auto Detected Subject)
Archaeology (Auto Detected Subject)
Sheep (Auto Detected Subject)
Mammalian Tooth Enamel (Auto Detected Subject)
Silica Phytoliths (Auto Detected Subject)
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BIAB (The British & Irish Archaeological Bibliography (BIAB))
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URI: http://www.sciencedirect.com/science/journal/03054403
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Created Date:		 10 May 2007