Check this out! Scientists have found stone tools far older than any known stone tool. ” At 3.3 million years old, they push back the record of stone tools by about 700,000 years. More significantly, they are half-a-million years older than any known trace of our own branch of the evolutionary tree.” Read the entire article here:
Oldest known stone tools found in Kenya; makers not known – Yahoo News.

“In this undated photo made available in May 2015 by the Mission Prehistorique au Kenya – West Turkana Archaeological Project, Sonia Harmand and Jason Lewis hold stone tools found in the West Turkana area of Kenya. The 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 its 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. (MPK-WTAP via AP)”