America's Aquarium in Stone
Some of the world's best preserved fossils are found in the flat-topped ridges of southwestern Wyoming's cold sagebrush desert. Fossilized fishes, insects, plants, reptiles, birds, and mammals are exceptional for their abundance, variety, and detail of preservation. Most remarkable is the story they tell of ancient life in a sub-tropical landscape.Read More
Did You Know?
The Green River Formation includes the best paleontological record of Tertiary aquatic communities in North America and possibly the world.