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Rock-smashing monkeys make flakes like early stone tools

October 19, 2016 5:04 PM
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NEW YORK — Call them knockoffs. Rock-smashing monkeys in Brazil make stone flakes that look a lot like tools made by our ancient ancestors.

Scientists watched as Capuchin monkeys in a national park pounded stones against each other, splitting off sharp-edged flakes that resemble cutting tools used by the forerunners of humans.

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