Getting to the roots of our ancient cousins' diet

Since the discovery of the fossil remains of Australopithecus africanus from Taung nearly a century ago, and subsequent discoveries of Paranthropus robustus, there have been disagreements about the diets of these two South African hominin species. By analyzing the splay and orientation of fossil hominin tooth roots, researchers now suggest that Paranthropus robustus had a unique way of chewing food not seen in other hominins.

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