<i>Carpolestes simpsoni</i> (IMAGE) Johns Hopkins Medicine Caption This is an illustration of Carpolestes simpsoni, a stem primate species that lived in Wyoming at the end of the Paleocene epoch. Credit Doug M. Boyer/Duke University Department of Evolutionary Anthropology 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.