Sonia Harmand

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Excavating stone artifacts that date from 3.3 million years ago in Kenya. MPK-WTAP

Our stone tool discovery pushes back the archaeological record by 700,000 years

Jason E. Lewis, Stony Brook University (The State University of New York) and Sonia Harmand, Stony Brook University (The State University of New York)

Stone tools excavated in Kenya date back 3.3 million years – making them about a million years older than the oldest known fossils from our own hominid genus Homo. Who made and used these tools?

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