Change in early human ancestor diet came earlier than thought

(Phys.org)—A team of researchers in the U.S. has found that our early human ancestors expanded their diet to include savannah grasses and other food sources approximately a quarter of a million years earlier than had been previously thought. In their paper published in Proceedings of the National Academy of Sciences, the team explains how they tested a variety of fossilized teeth, what they found and the impact the change in diet likely had on the ability of our ancestors to thrive.

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