Fossil and Game Piece (IMAGE) University of Texas at Austin Caption An ammonite fossil with its game piece counterpart. Credit Rowan Martindale/The University of Texas at Austin Jackson School of Geosciences Usage Restrictions Include photo credit 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.