Oldest Stone Tools Pre-date Humanity
3.3 million year old stone tools are much older than the oldest human species
Dr. Jason Lewis, co-director of the West Turkana Archeological Project and a research professor with the Turkana Basin Institute at Stony Brook University in New York, was part of the team that discovered the tools.
He suggests that the tools might have been used by a pre-human species more like an upright chimp, but we hadn't previously suspected that these species had the cognitive sophistication to make tools. Certainly, though, this suggests that the evolution of tool making pre-dates the evolution of the genus Homo.