Pterosaur 3 (IMAGE) University of Leicester Caption Family resemblance. This larger specimen is slightly jumbled, but it still reveals many important details, including the anatomy of the hands and feet, which have been found to be highly diagnostic features. This allows us to distinguish Pterodactylus from other closely related pterosaurs. Credit University of Leicester Usage Restrictions Use only with credit. License Original 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.