Ashfall Fossil Beds: Fossil "Pompeii" of Prehistory. Ash from a Yellowstone hotspot eruption million years ago created these fossilized bone beds. The Ashfall Fossil Beds are especially famous for fossils of mammals from the middle Miocene geologic epoch.
Dinosaur National Monument, Colorado/Utah This geological treasure has revealed fossils and artifacts that provide crucial keys to our prehistoric past. Sure to stir the enthusiasm of your inner archaeologist!