• Knightia eocaena mass mortality

    Fossil Butte

    National Monument Wyoming


area map

Forty-five miles north of Interstate 80, Kemmerer, Wyoming is at the crossroads of U.S. Highways 189 and 30. The monument is 9 miles west of Kemmerer on U.S. Highway 30. Follow the signs to the visitor center.

Commercial transportation or tour buses are not available. The monument is a 2.5 hour drive from Salt Lake City International Airport.

Did You Know?

Chisternon undatum, Western Paleo Labs photo

The Green River Formation includes the best paleontological record of Tertiary aquatic communities in North America and possibly the world.