JAVIER TRUEBA / MSF / SCIENCE PHOTO LIBRARY JAVIER TRUEBA / MSF / SCIENCE PHOTO LIBRARY
Paranthropus robustus skull (SK-54) and leopard jaw (SK-349). These fossils date from around 1.5 million years ago. SK-54 is the skull-cap from a child australopithecine, found in 1949 in Swartkrans, South Africa. SK-349 is from the same location. Two indentations (centre right) in the skull-cap's parietal bone match the spacing (aligned here) of the canines in the leopard's lower jaw (mandible). The hypothesis advanced in 1970 (revised 1981) by South African palaeontologist Charles Kimberlin Brain is that the child was seized by the leopard from a sleeping site at the entrance to the cave where the fossils were discovered.
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