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?

Paleontologist Kallie Moore and PBS Eons unearth the answers to this century-long mystery: Untangling the Devil’s Corkscrew.

Related reading: Palaeocastor. Plus, watch more videos about fossils.

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