(IMAGE) University of Bonn Caption The root of the tooth found has a diameter of 60 Millimeters. This makes it the thickest ichthyosaur tooth found so far. Credit © Rosi Roth/University of Zurich Usage Restrictions Please use this picture only in connection with the press release. 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.