Fossil Butte National Monument - Kemmerer WY
Posted by: 
nomadwillie
N 41° 50.187 W 110° 46.229
12T E 519056 N 4631643
Fossil Butte National Monument was established as a national monument on October 23, 1972.
Waymark Code: WMGE77
Location: Wyoming, United States
Date Posted: 02/21/2013
Views: 9
Fossil Butte National Monument is a unit of the National Park Service located 15 miles west of Kemmerer, Wyoming, USA. It centers on an extraordinary assemblage of Eocene Epoch (56 to 34 million years ago) animal and plant fossils associated with the smallest lake — Fossil Lake — of the three great lakes which were present at that time in what are now Wyoming, Utah, and Colorado. The other two were lakes were Lake Gosiute and Lake Uinta.
Fossil Butte National Monument preserves the best paleontological record of Tertiary aquatic communities in North America and possibly the world, within the 50-million-year-old Green River Formation — the ancient lake bed. Fossils preserved — including fish, alligators, bats, turtles, dog-sized horses, insects, and many other species of plants and animals — suggest that the region was a low, subtropical, freshwater basin when the sediments accumulated, over about a 2 million-year period
Source: (
visit link)
Visit Instructions:At least one good photo you have personally obtained and a brief story of your visit. Any additions or corrections to the information about the Waymark (for instance, have the hours open to the public changed) will be greatly appreciated.