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Untangling the Devil's Corkscrew

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Channel: PBS Eons
Categories: Archeology / Paleontology   |   Biology   |   Science  
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In the late 1800s, paleontologists in Nebraska found huge coils of hardened sand stuck deep in the earth. Local ranchers called them Devil's Corkscrews and scientists called them Daemonelix. It was clear these corkscrews were created by some form of life, but what?

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