Journal
SCIENCE
Volume 334, Issue 6061, Pages 1388-1391Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1213317
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Funding
- Palaeontological Scientific Trust
- National Research Foundation (NRF)
- U.S. National Science Foundation [0917739, 0551927]
- Division Of Behavioral and Cognitive Sci
- Direct For Social, Behav & Economic Scie [917739, 0551927] Funding Source: National Science Foundation
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The Middle Stone Age (MSA) is associated with early behavioral innovations, expansions of modern humans within and out of Africa, and occasional population bottlenecks. Several innovations in the MSA are seen in an archaeological sequence in the rock shelter Sibudu (South Africa). At similar to 77,000 years ago, people constructed plant bedding from sedges and other monocotyledons topped with aromatic leaves containing insecticidal and larvicidal chemicals. Beginning at similar to 73,000 years ago, bedding was burned, presumably for site maintenance. By similar to 58,000 years ago, bedding construction, burning, and other forms of site use and maintenance intensified, suggesting that settlement strategies changed. Behavioral differences between similar to 77,000 and 58,000 years ago may coincide with population fluctuations in Africa.
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