Cleveland-Lloyd Dinosaur Quarry

The Cleveland-Lloyd Dinosaur Quarry contains the greatest accumulation of Jurassic dinosaur bones in the world. Since the 1920s, paleontologists have collected more than 12,000 fossil bones at the quarry. At least 70 individual dinosaurs died here about 145 million years ago during the Jurassic Period, and their jumbled skeletons were covered by sediments of the Morrison Formation. The remains of the carnivorous dinosaur Allosaurus are unusually common, and visitor center displays include an Allosaurus skeleton. Visitors can also view part of the quarry that has been enclosed for specimen protection. There are restrooms, picnic tables, and self-guided trails. The Cleveland-Lloyd Dinosaur Quarry was designated BLM’s first National Natural Landmark in 1966.