Clues in the Teeth (IMAGE) Ohio University Caption CT scan-generated models of the jaws of <em>Majungasaurus</em> (left), <em>Ceratosaurus</em> (center) and <em>Allosaurus</em> (right), with microscopic views of the interior of their teeth below each model. Stripes running from upper left to lower right in each microscopic image are daily deposited incremental lines, which allow the amount of time it took for a tooth to grow to be reconstructed. Credit <em>PLOS ONE</em> Usage Restrictions With attribution. 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.