<em>Chilecebus</em> in Hand (IMAGE) American Museum of Natural History Caption An exceptional fossil skull of Chilecebus carrascoensis, a 20-million-year-old primate from the Andes mountains of Chile. Credit © AMNH/N. Wong and M. Ellison 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.