The WAMSA project, funded under the EU Horizon 2020 programm builds on both previously described work and emerging data from West Africa. Over the last decade, this region is yielding provocative insights that increasingly challenge early narratives about human biological and cultural evolution. Recent introgression of archaic specimens in the modern genome and very long persistence of Middle Stone Age (MSA) technology have been emphasized. The aim is to explain this distinct regional Stone Age Sequence. In other words what are the forces driving forces West African MSA “cultural anachronism”? Are climatic trends sufficient to explain long-lasting behavioral stability? Can demographic conditions between 150 and 11 thousand years ago explain it? Did connections exist between structured populations? Were West African populations geographically separated from the rest of the continent isolated? Were there natural barriers (eg. ecological) separating them from the rest of the continent?
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