Fossils reveal a strong-armed, dead-end hominid
Brawny-limbed human relative walked and climbed trees in East Africa
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LIMB BREAKERS The ends of a leg bone (top) and arm bone (bottom) from a 1.34-million-year-old member of Paranthropus boisei were probably chewed off by meat-eating animals. The bones reveal P. boisei had robust arms and legs.
M. Domínguez-Rodrigo et al/PLOS ONE 2013