Untangling the Devil's Corkscrew

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: 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? Thanks to Julio Lacerda and Studio 252mya for the corkscrew illustrations. You can find more of Julio's work here: https:/