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Deep African roots for toolmaking method

Stone-trimming technique originated earlier than thought, archaeologists contend

2:02pm, October 28, 2010

Stone-tool makers living in southern Africa 75,000 years ago pushed the cutting edge in more ways than one. These intrepid folk sharpened the thin tips of heated stone spearheads using a forceful technique previously dated to no more than 20,000 years ago, a new study finds.

This stone-tool making method, called pressure flaking, was invented and used sporadically in Africa before spreading to other continents, according to a team led by archaeologist Vincent Mourre of the University of Toulouse-Le Mirail in France. Having a flexible repertoire of tool-making methods aided the sur

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