Fragment of Calf Scull (IMAGE) National Research Tomsk State University Caption This image shows a fragment of the calf scull. Credit ©TSU Usage Restrictions image may only be used with appropriate caption or 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.