Capuchins Observed Making Flakes (IMAGE) University of Oxford Caption Wild-bearded capuchin monkey in Serra da Capivara National Park, Brazil, unintentionally creating fractured flakes and cores. Credit Michael Haslam/ Primate Archaeology Group Usage Restrictions Image may be used to illustrate at the same time as publication of the research story in Nature (under same embargo). 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.