shark Asteracanthus (IMAGE) University of Vienna Caption Tentative life reconstruction of the hybodontiform shark Asteracanthus; for scale see silhouettes at the right lower corner Credit © Sebastian Stumpf/Fabrizio De Rossi Usage Restrictions None 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.