The ornaments were discovered about 30 years ago at a rock shelter called Santa Elina in central Brazil. ![]() In the past decade, other research has challenged the conventional wisdom that people didn’t reach the Americas until a few thousand years before rising sea levels covered the Bering land bridge between Russia and Alaska, perhaps around 15,000 years ago. ![]() “We now have good evidence - together with other sites from South and North America - that we have to rethink our ideas about the migration of humans to the Americas,” said Mirian Liza Alves Forancelli Pacheco, a study co-author and archaeologist at the Federal University of Sao Carlos in Brazil. That’s several thousand years before some earlier theories had suggested the first people arrived in the Americas, after migrating out from Africa and then Eurasia. They concluded that the carved and polished shapes and drilled holes were the work of deliberate craftsmanship.ĭating of the ornaments and sediment at the Brazil site where they were found point to an age of 25,000 to 27,000 years ago, the researchers reported. Scientists analyzed triangular and teardrop-shaped pendants made of bony material from the sloths. New research suggests humans lived in South America at the same time as now extinct giant sloths, bolstering evidence that people arrived in the Americas earlier than once thought.
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