Humans were living in Brazil earlier than previously thought, prehistoric sloth-bone pendants suggest.
The date that humans arrived in South America has been pushed back to at least 25,000 years ago, based on an unlikely source: bones from an extinct giant ground sloth that were crafted into pendants by ancient people.
The Santa Elina rock shelter, located in the Mato Grosso state in central Brazil, has been studied by archaeologists since 1985. Previous research at the site noted the presence of more than 1,000 individual figures and signs drawn on the walls, hundreds of stone tool artifacts, and thousands of sloth osteoderms, with three of the osteoderms showing evidence of human-created drill holes.
"These observations show that these three osteoderms were modified by humans into artefacts, probably personal ornaments," the researchers wrote in their paper.
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