Whether stone-tool marks on a 1.45 million-year-old hominid leg bone are a sign of ancient cannibalism is up for debate.
, Pobiner and colleagues say. There is also no way to tell whether a hominid from the same species or a different species left stone-tool marks on the leg fossil.
Zooarchaeologist Raphaël Hanon of Wits University in Johannesburg agrees. Cutting into the fleshy part of a lower leg probably reflected a need for food rather than a ritual act of some kind, says Hanon, who was not part of Pobiner’s team. There is no way to know whether flesh from meatier body parts, such as the shoulder and upper leg, was also removed, he says.
Archaeologist Yonatan Sahle of the University of Cape Town in South Africa agrees that the interpretation remains up in the air. AlthoughSubscribe to Science NewsFurther complicating matters, the original context of the leg fossil is unknown. It was found on the surface of a site in northern Kenya after coming loose from eroding sediment. The fossil’s age estimate derives from its position just above a volcanic ash layer dated to between around 1.5 million and 1.6 million years ago.
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