Intermountain West Fossil Sites

This tour explores the significance and history of fossil sites in the Intermountain West. It includes sites such as Fossil Cabin, Petrified Forest National Park, Dinosaur National Monument, Dinosaur Ridge, and Fossil Butte National Monument.

Fossil Cabin

Thomas Boylan settled in Medicine Bow, Wyoming, sometime in the early 1900s. In 1915, he began searching for dinosaur bones at Como Bluff, a rocky ridge between the towns of Medicine Bow and Rock River known for being abundant with fossils. As early…

Petrified Forest National Park

During the Triassic Period, northeastern Arizona’s Colorado Plateau was near the equator on part of the prehistoric supercontinent Pangea. Due to the different climate, there existed massive trees and rivers all over the area. Some trees fell into…

Dinosaur National Monument

Earl Douglass was a paleontologist working at Carnegie Museum in Pittsburgh, Pennsylvania. In 1909, Douglass traveled to Utah to look for dinosaur fossils. Years before, he had nearly completed an entire Diplodocus skeleton from Wyoming. The…

Dinosaur Ridge

Dinosaur Ridge is a fossil site in the Morrison Formation and Cretaceous Dakota Formation, west of Denver, Colorado. Othniel Charles Marsh, professor of Paleontology at Yale College, and Arthur Lakes, a geologist and paleontologist, began excavation…

Fossil Butte

Dubbed “America’s Aquarium in Stone” by the National Park Service, Fossil Butte is exceptional because it has many well-preserved fossils, especially those of aquatic animals. It is considered by researchers to be one of the richest paleontology…