Article 5GHVV Get a glimpse of southern Brazil's paleoburrows — dug by prehistoric animals

Get a glimpse of southern Brazil's paleoburrows — dug by prehistoric animals

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from The World: Latest Stories on (#5GHVV)
Across southern Brazil, thousands of tunnels dug by prehistoric animals have been discovered in recent years. It's opening up a whole new branch of paleontology. But researchers face plenty of challenges in trying to study and preserve the paleoburrows.
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