Fossil Butte National Monument

Fossil Butte National Monument is a United States National Monument in Southwest Wyoming.

All Places United States Wyoming



About Fossil Butte National Monument

Fossil Butte National Monument is a unique paleontological site, where ecosystems of the 50-million-year-old Green River Formation of the ancient subtropical lake bed were unusually well preserved. The fossils include fish, alligators, bats, turtles, dog-sized horses, insects, and many other species of plants and animals.

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Source: wikivoyage