
A recent discovery in a Kenyan museum — previously unnoticed cut marks on a 1.45-million-year-old shin bone — may be the oldest evidence of ancient human relatives butchering and presumably eating each other. Nine distinctive marks, oriented in the same direction, show repetitive cuts in the place where calf muscle attaches to bone, revealing a stone tool methodology typically used to remove meat. Two bite marks show a big cat also chomped on the bone at some point.
Because only the shin bone survives, researchers can't say just which ancient species of Homo sapiens relative was cut up and devoured. They also don't know whether the same species or a different relative stripped and presumably ate the calf muscle. If the two were the same species, the find may represent the earliest known example of cannibalism. If not, the grizzly tableau still represents one evolutionary cousin having another for dinner — and not as a guest.












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