Global Data (IMAGE) University of Chicago Caption University of Chicago paleontologist David Jablonski, working with marine bivalve data at the Smithsonian Institution. Credit Courtesy of David Jablonski Usage Restrictions This image may be used in news reports describing the research of Andrew Krug and David Jablonski. 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.