A formation famous for producing T. rex fossils has now yielded the oldest evidence of primates in the fossil record, in what is being hailed a significant
Categories environment, plesiadapiformes, geological history of earth, evolution of primates, mammal taxonomy, p janisae, purgatorius, gregory wilson mantilla, stephen chester, paleocene, cenozoic, primate, cretaceouspaleogene extinction event, paleogene, placentalia, eric sargis, p unio, p mckeeveri, mammal, p ceratops
