Monkeying Around: UNLV Scientists Discover 22 Million-Year-old Fossils

hands holding bottle and applicator over fossil
Jun. 13, 2019

Geoscientist Terry Spell and former UNLV grad student Dawn Reynoso, along with an international team of researchers, discovered 22 million-year-old fossilized teeth of a monkey in Kenya, finding a new species that helps fill a 6-million-year gap in primate evolution. Isotopic ages on the rocks were obtained in the Nevada Isotope Geochronology Laboratory on the UNLV campus. “This adds to our understanding of the earliest evolutionary history of Old World monkeys, including changes in their diet,” Spell said. The study was published in the Proceedings of the National Academy of Sciences