Robotic ammonite diagrams (IMAGE) University of Utah Caption Schematics of four different designs of robotic ammonites, used to explore the effects of shell shape on swimming ability. Credit David Peterman/University of Utah Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.