• Knightia eocaena mass mortality

    Fossil Butte

    National Monument Wyoming


hiking with four-legged friends
NPS photo

Pets are welcome in Fossil Butte National Monument parking areas and on trails but must be under physical restraint at all times. Please be considerate and pick up the poop.

Leaving your pet in a closed vehicle during the warm summer days could spell disaster. Open windows and check on them often.

Did You Know?

Diplomystus dentatus, NPS photo of Fossil Country Museum specimen

Railroad workers played a major role in the discovery of fossils from the Green River Formation. In the late 1860's, Union Pacific workers uncovered the first major fossil fish beds (Lake Gosiute) near the town of Green River, Wyoming.