The bones were shaped by people using stone tools before they were fossilised, adding new evidence for humans’ arrival in the Americas before the end of the Ice Age
at the Federal University of São Carlos in Brazil, “but the great question is, were those artefacts made by humans during the coexistence of humans and [giants sloths]?”high-resolution microscopes and x-rays. Their analysis revealed scratches going in different directions and repeated gouges made by early stone tools. The bones’ shape and texture couldn’t be explained by natural erosion or animal bites.Keep up with advances in archaeology and evolution with our monthly newsletter.
“It would be interesting to see if they [used these bones] for decoration, for fashion, or to show that they were from a specific group,” says
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