A remarkable fossil
Devil's corkscrews
On the vast North American plains once lived the prairie beaver, a land-dwelling species. It had an underground burrow which was connected to the surface by long, corkscrew tunnels. The spectacular fossils of those tunnels are called devil’s corkscrews.
Prairie beaver burrow, USA.
Photo: Public Domain
Fossils and Evolution
This is part of the exhibition Fossils and Evolution at the Museum of Natural History in Stockholm.
