82,000-year-old shell beads from North Africa and implications for the origins of modern human behavior.
Bouzouggar A, Barton N, Vanhaeren M, d'Errico F, Collcutt S, Higham T, Hodge E, Parfitt S, Rhodes E, Schwenninger JL, Stringer C, Turner E, Ward S, Moutmir A, Stambouli A.
Bouzouggar A, et al. Among authors: vanhaeren m.
Proc Natl Acad Sci U S A. 2007 Jun 12;104(24):9964-9. doi: 10.1073/pnas.0703877104. Epub 2007 Jun 4.
Proc Natl Acad Sci U S A. 2007.
PMID: 17548808
Free PMC article.