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- Bamford, Marion K., et al. Show all 9 Authors
- Proceedings of the National Academy of Sciences of the United States of America 2012 v.109 no.33 pp. 13214-13219
- Euphorbia; Flueggea virosa; age determination; beeswax; bones; castor beans; egg shell; models; ostriches; ricinoleic acid; South Africa
- ... Recent archaeological discoveries have revealed that pigment use, beads, engravings, and sophisticated stone and bone tools were already present in southern Africa 75,000 y ago. Many of these artifacts disappeared by 60,000 y ago, suggesting that modern behavior appeared in the past and was subsequently lost before becoming firmly established. Most archaeologists think that San hunter–gatherer cul ...
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