Scott, Craig S.; Fox, Richard C.; Redman, Cory M. (2016). «A new species of the basal plesiadapiform Purgatorius (Mammalia, Primates) from the early Paleocene Ravenscrag Formation, Cypress Hills, southwest Saskatchewan, Canada: further taxonomic and dietary diversity in the earliest primates.». Canadian Journal of Earth Sciences. 53 (4): 343-354. doi:10.1139/cjes-2015-0238. hdl:1807/71784
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Scott, Craig S.; Fox, Richard C.; Redman, Cory M. (2016). «A new species of the basal plesiadapiform Purgatorius (Mammalia, Primates) from the early Paleocene Ravenscrag Formation, Cypress Hills, southwest Saskatchewan, Canada: further taxonomic and dietary diversity in the earliest primates.». Canadian Journal of Earth Sciences. 53 (4): 343-354. doi:10.1139/cjes-2015-0238. hdl:1807/71784