A jut-jawed, peg-toothed member of humans’ evolutionary family has chemically vetoed its 50-year-old nickname — Nutcracker Man.
GRASSY PALATE Casts of two fossils contrast Paranthropus boisei’s large, flat teeth (left) with a modern human’s smaller teeth. A new study suggests that Nutcracker Man ate grasses and sedges, not nuts as long assumed.
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