Fossil Butte National Monument

Photo

by James St. John

/ CC BY 2.0

Fossil Butte National Monument in Wyoming, USA, is a remarkable site known for its exceptionally well-preserved fossils from the Eocene Epoch, around 56 to 34 million years ago. Located in southwestern Wyoming, the monument protects a portion of the Green River Formation, which was once a lush, subtropical lake environment. Visitors to the monument can explore an array of fossilized plants, fish, reptiles, and other ancient organisms that offer a window into a prehistoric ecosystem. The visitor center features exhibits showcasing these fossils, along with information on the region's geological history.

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