Researchers (IMAGE) Rice University Caption From left, Rice University's Cin-Ty Lee, Ming Tang and Graham Eldridge with one of the Arizona xenoliths that prompted their find. Credit Jeff Fitlow/Rice University Usage Restrictions Must credit: "Jeff Fitlow/Rice University" 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.