The Rocky Mountain region is known for significant discoveries of dinosaur fossils, particularly from the Mesozoic Era.

The Rocky Mountain region, particularly areas like the Morrison Formation, is a rich source of dinosaur fossils. These sedimentary rock layers preserve the remains of dinosaurs that roamed the area during the Jurassic and Cretaceous periods of the Mesozoic Era. Famous dinosaur finds, including various sauropods, theropods, and ornithischians, have been unearthed in the Rockies, making them a significant location for paleontological research.