Abstract:
The Middle to Later Stone Age transition in Africa has been debated as a significant shift in
human technological, cultural, and cognitive evolution. However, the majority of research on
this transition is currently focused on southern Africa due to a lack of long-term, stratified
sites across much of the African continent. Here, we report a 78,000-year-long archeological
record from Panga ya Saidi, a cave in the humid coastal forest of Kenya. Following a shift in
toolkits ~67,000 years ago, novel symbolic and technological behaviors assemble in a nonunilinear
manner. Against a backdrop of a persistent tropical forest-grassland ecotone,
localized innovations better characterize the Late Pleistocene of this part of East Africa than
alternative emphases on dramatic revolutions or migrations.
