`Lucy' species used stone tools, fossil study says
Wednesday, August 11, 2010 - 12:14
in Paleontology & Archaeology
By MALCOLM RITTER 2010-08-11T17:00:57Z NEW YORK (AP) -- Two ancient animal bones from Ethiopia show signs of butchering by human ancestors, moving back the earliest evidence for the use of stone tools by about 800,000 years, researchers say....