Download or read book A Closer Look at John Day Fossil Beds National Monument written by Megan Wilkins and published by . This book was released on 2017-06 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Hidden among the sagebrush dotted hills of eastern Oregon is one of the world's premiere fossil sites. Explore dramatic changes across the Age of Mammals in a journey through the rock layers within the pages of A Closer Look at John Day Fossil Beds National Monument.