Researchers from the City University of New York believe that an early evolutionary relative called Paranthropus used the newly-discovered tools to butcher meat 300,000 years before humans.
Expanded geographic distribution and dietary strategies of the earliest Oldowan hominins and Paranthropus science.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from science.org Daily Mail and Mail on Sunday newspapers.