Sometimes there are mysteries of the past that take years to solve. Sometimes a new or unique approach is used to figure them out, or sometimes they are never solved. These Daemonelix, or Devil's Corkscrews, as they were called, were a devil ova thing to figure out for the paleontologists who were studying the fossils of Agate Fossil Beds National Monument. Originally they were thought to be the filled in holes of ancient plant roots. Then, bones of paleocastor were found at the bottom of one, proving they were the trace fossils of this animal's activities. Paleocastor is an ancestral beaver that was land oriented rather than water oriented.