A New Look at Horse Evolution (IMAGE) Spanish National Research Council (CSIC) Caption Three species of Hipparion, that lived in the Iberian peninsula between 9 million years and 5 million years ago Credit MAURICIO ANTÓN 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.