Tooth Enamel under the Microscope (IMAGE) University of Colorado at Boulder Caption Enamel from a fragment of an ancient rhinoceros tooth as seen under increasing levels of magnification. Credit Jaelyn Eberle Usage Restrictions None 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.