Cartorhynchus fossil (IMAGE) Field Museum Caption The only known fossil specimen of Cartorhynchus, a small early ichthyosaur with a short snout and seal-like appendages. Credit Ryosuke Motani Usage Restrictions Please include 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.