Fossil Butte
United States
About Fossil Butte
Fossil Butte National Monument preserves one of the world's most complete fossil records from the Eocene Epoch, approximately 50 million years ago. The monument protects ancient lake bed deposits that contain exceptionally well-preserved fossils of fish, insects, plants, reptiles, birds, and mammals. Visitors can view fossils in the visitor center and participate in fossil preparation demonstrations. The monument is managed by the National Park Service.