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


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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https://www.pri.org/stories/2021-04-13/get-glimpse-southern-brazils-paleoburrows-dug-prehistoric-animals

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