<i>Aetiocetus weltoni</i> (IMAGE) San Diego State University Caption Artist's reconstruction of Aetiocetus weltoni, a 25 million year old baleen whale, with teeth and baleen. Co-occurrence of teeth and baleen side-by-side allow the animal to eat single prey, such as small fish, with their teeth, as well as large accumulations of small crustaceans with their baleen. Credit Art by C. Buell, used with permission from J. Gatesy. 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.