What in the world is this thing? The formations fo... ...nd in the 19th century in Nebraska resembled huge corkscrews , and locals called them the Devil's Corkscrews . Yeah, scientists knew they were fossils of some...
https://www.neatorama.com/2018/02/01/Untangling-the-Devils-Corkscrew/
Untangling the Devil's Corkscrew
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