Hamadryas Baboon (IMAGE) University of California - Berkeley Caption A threat display by a Hamadryas baboon (<i>Papio hamadryas</i>) in Ngorongoro, Tanzania. A detailed study of the inherited shapes and sizes of baboon teeth led to the discovery of a dental trait that can be used to track the evolution of primates over the last 20 million years. Credit Leslea Hlusko, UC Berkeley (2014) 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.