Crocodile and hippo bones (IMAGE) Max Planck Institute of Geoanthropology Caption Extirpated crocodile and extinct pygmy hippo bones excavated from Ankatok in a layer dating to 3,000 - 4,000 years ago Credit Garth Cripps, 2018 Usage Restrictions Usage rights maintained by copyright holder 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.