John Day Fossil Beds National Monument John Day, OR
Address:
Superintendent, John Day Fossil Beds National Monument HCR 82, Box 126 Kimberly, OR 97848 503/987-2333
John Day Fossil Beds National Monument preserves one of the most complete fossil records of the last 65 million years. The beds cover the Cenozoic Era, of the Age of Mammals, when mammals rose to become the dominant form of life and flowering plants became the dominant form of plant life.