Fossil Teeth (IMAGE) University of Cincinnati Caption UC researchers examined strontium in 89 fossilized teeth excavated from two sites in Florida. Pictured is a tooth from the prehistoric horse Cormohipparion. Credit Jenelle Wallace 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.