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Science 10 December 2004:
Vol. 306. no. 5703, p. 1909
DOI: 10.1126/science.1102558


Abstract
Full Text 		Capuchin Stone Tool Use in Caatinga Dry Forest
A. C. de A. Moura and P. C. Lee

Supporting Online Material

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    The alpha male digs up Thiloa glaucocarpa tubers using a stone. At the very beginning of the video, he stops, look around, and then goes to collect a stone to help dig. This implies a mental image of an object that will be used to solve a particular problem.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)