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Approximate age:395,000 years old=average of minimum (0.272 Ma) and maximum (0.518 Ma)
Date based on: Ar-Ar See map of sites with similar ages
Dating reference: Johnson CR, McBrearty S (2012) Archaeology of middle Pleistocene lacustrine and spring paleoenvironments in the Kapthurin Formation, Kenya. Journal of Anthropological Archaeology 31(4): 485-499.
Hominids:
Archaeology:Middle Stone Age (MSA)/Mousterian
Important specimens:
Notes: 75 blades, Levallois debitage; centripetal discs and Levallois recurrent cores; blades 25% of all flakes using uni- and bidirectional flaking; blade cores 20-30% of cores; early blade production in African Late Acheulian.
Location: Kapthurin, upper K3 and K4 localities (Trachytic tuff, 'upper' basaltic tuff, MBTU, 'lower' basaltic tuff, upper part of K3 sediments), Kapthurin Formation, Kenya
Map location/coordinates reference: Johnson CR, McBrearty S (2012) Archaeology of middle Pleistocene lacustrine and spring paleoenvironments in the Kapthurin Formation, Kenya. Journal of Anthropological Archaeology 31(4): 485-499.
Key references:
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