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Untangling the Devil's Corkscrew | Eons

WKNO
Published July 13, 2023 at 5:00 AM CDT

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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Eons | PBS Specials