Archaeological shellfish size and later human evolution in Africa.

Abstract

Approximately 50 ka, one or more subgroups of modern humans expanded from Africa to populate the rest of the world. Significant behavioral change accompanied this expansion, and archaeologists commonly seek its roots in the African Middle Stone Age (MSA; ∼200 to ∼50 ka). Easily recognizable art objects and "jewelry" become common only in sites that postdate… (More)
DOI: 10.1073/pnas.1304750110

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