The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.
82,000-year-old shell beads from North Africa and implications for the origins of modern human behavior
Open accessAbstract
The first appearance of explicitly symbolic objects in the archaeological record marks a fundamental stage in the emergence of modern social behavior in Homo . Ornaments such as shell beads represent some of the earliest objects of this kind. We report on examples of perforated Nassarius gibbosulus shell beads from Grotte des Pigeons (Taforalt, Morocco), North Africa. These marine shells come from archaeological levels dated by luminescence and uranium-series techniques to ≈82,000 years ago. They confirm evidence of similar ornaments from other less well dated sites in North Africa and adjacent areas of southwest Asia. The shells are of the same genus as shell beads from slightly younger levels at Blombos Cave in South Africa. Wear patterns on the shells imply that some of them were suspended, and, as at Blombos, they were covered in red ochre. These findings imply an early distribution of bead-making in Africa and southwest Asia at least 40 millennia before the appearance of similar cultural manifestations in Europe.
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Siddall, M., Rohling, E. J., Almogi-Labin, A., Hemleben, C., Meischner, D., Schmelzer, I., & Smeed, D. A. (2003) · Nature · doi:10.1038/nature01690 · Cited by 1,626
Stratigraphic placement and age of modern humans from Kibish, Ethiopia
McDougall, I., Brown, F. H., & Fleagle, J. G. (2005) · Nature · doi:10.1038/nature03258 · Cited by 1,023
U-series and ESR analyses of bones and teeth relating to the human burials from Skhul
Grün, R., Stringer, C., McDermott, F., Nathan, R., Porat, N., Robertson, S., Taylor, L., Mortimer, G., Eggins, S., & McCulloch, M. (2005) · Journal of Human Evolution · doi:10.1016/j.jhevol.2005.04.006 · Cited by 338
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Cited by
Engraved ochres from the Middle Stone Age levels at Blombos Cave, South Africa
Henshilwood, C. S., d'Errico, F., & Watts, I. (2009) · Journal of Human Evolution · doi:10.1016/j.jhevol.2009.01.005 · Cited by 632
Self-citationCurry, O. S., Rowland, L. A., Van Lissa, C. J., Zlotowitz, S., McAlaney, J., & Whitehouse, H. (2018) · Journal of Experimental Social Psychology · doi:10.1016/j.jesp.2018.02.014 · Cited by 528
Optically Stimulated Luminescence Dating of Sediments over the Past 200,000 Years
Rhodes, E. J. (2011) · Annual Review of Earth and Planetary Sciences · doi:10.1146/annurev-earth-040610-133425 · Cited by 512
Self-citationLong-distance stone transport and pigment use in the earliest Middle Stone Age.
Brooks, A. S., Yellen, J. E., Potts, R., Behrensmeyer, A. K., Deino, A. L., Leslie, D. E., Ambrose, S. H., Ferguson, J. R., d’Errico, F., Zipkin, A. M., et al. (2018) · Science · doi:10.1126/science.aao2646 · Cited by 412
Self-citationAdditional evidence on the use of personal ornaments in the Middle Paleolithic of North Africa
d'Errico, F., Vanhaeren, M., Barton, N., Bouzouggar, A., Mienis, H., Richter, D., Hublin, J.-J., McPherron, S. P., & Lozouet, P. (2009) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0903532106 · Cited by 379
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Metadata
- Authors
- Bouzouggar, A., Barton, N., Vanhaeren, M., d'Errico, F., Collcutt, S., Higham, T., Hodge, E., Parfitt, S., Rhodes, E., Schwenninger, J.-L., Stringer, C., Turner, E., Ward, S., Moutmir, A., & Stambouli, A.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2007-06-12
- Volume
- 104
- Issue
- 24
- Pages
- 9964-9969
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2129879182
- Cited by
- 552
- References
- 3
- FWCI
- 163.34
- Type
- journal article
- Language
- en
- Open access
- green
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- Bouzouggar, A., Barton, N., Vanhaeren, M., d'Errico, F., Collcutt, S., Higham, T., Hodge, E., Parfitt, S., Rhodes, E., Schwenninger, J.-L., Stringer, C., Turner, E., Ward, S., Moutmir, A., & Stambouli, A. (2007). 82,000-year-old shell beads from North Africa and implications for the origins of modern human behavior. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0703877104
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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