The result: Stone flakes dated to 3.3 million years ago, 700,000 years older than the oldest-known tools to date and hundreds of thousands of years before our genus Homo even arrived.
“The artifacts were clearly knapped [created by intentional flaking] and not the result of accidental fracture of rocks,” Harmand told the meeting.
World’s oldest stone tools discovered in Kenya by By Michael Balter, Science magazine
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