In this undated photo made available in May 2015 by the Mission Prehistorique au Kenya-West Turkana Archaeological Project, Sonia Harmand holds a stone tool found in the West Turkana area of Kenya. This and other artifacts, dated at 3.3 million years old, are much older than the earliest known trace of our own branch of the evolutionary family tree. So it’s a new challenge to the traditional idea that only members of our branch made stone tools. The discovery was reported in the journal Nature on Wednesday, May 20, 2015.
In this undated photo made available in May 2015 by the Mission Prehistorique au Kenya-West Turkana Archaeological Project, Sonia Harmand holds a stone tool found in the West Turkana area of Kenya. This and other artifacts, dated at 3.3 million years old, are much older than the earliest known trace of our own branch of the evolutionary family tree. So it’s a new challenge to the traditional idea that only members of our branch made stone tools. The discovery was reported in the journal Nature on Wednesday, May 20, 2015. Associated Press
In this undated photo made available in May 2015 by the Mission Prehistorique au Kenya-West Turkana Archaeological Project, Sonia Harmand holds a stone tool found in the West Turkana area of Kenya. This and other artifacts, dated at 3.3 million years old, are much older than the earliest known trace of our own branch of the evolutionary family tree. So it’s a new challenge to the traditional idea that only members of our branch made stone tools. The discovery was reported in the journal Nature on Wednesday, May 20, 2015. Associated Press

Stone tools from Kenya are oldest yet discovered

May 20, 2015 05:22 PM