Cast (IMAGE) University of Alaska Fairbanks Caption Greg Erickson and Pat Druckenmiller place a plaster jacket on a bone found along the Colville River on Alaska's North Slope. Credit Photo by Kevin May Usage Restrictions Credit photographer License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.