Other branches of early humans, not just ancestors of Homo Sapiens, used them to cut and crush food.
Click here for original story, Ancient stone tools found in Kenya made by early humans
Source: BBC News – Science & Environment
Other branches of early humans, not just ancestors of Homo Sapiens, used them to cut and crush food.
Click here for original story, Ancient stone tools found in Kenya made by early humans
Source: BBC News – Science & Environment