ScienceAlertCapuchin Monkeys May Have Been in Their Own Unique 'Stone Age' For at Least 3000 YearsJun 24, 2019more_vert
National GeographicOldest non-human stone tools outside Africa found in BrazilJun 24, 2019Michael GreshkoBy Michael Greshkomore_vert
Science News MagazineCapuchin monkeys' stone-tool use has evolved over 3,000 yearsJun 24, 2019Bruce BowerBy Bruce Bowermore_vert