The John Day Fossil Beds preserve a singular and extraordinary record of evolutionary and climatic change that spans almost 50 million years of the Age of Mammals. After more than a century and a half o investigation, incredible new fossils still emerge. Although the story still holds unknown chapters to be written, what we know today is captured here within the pages of A Closer Look at John Day Fossil Beds National Monument
Features: Paperback. 2017. 58 pp. Countless color photographs and illustrations. 8.25 x 10.75 in.