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. Bibcode:2016CaJES..53..343S. doi:10.1139/cjes-2015-0238. hdl:1807/71784.
Clemens 2004 Clemens, William (2004). "Purgatorius (Plesiadapiformes, Primates?, Mammalia), A Paleocene Immigrant into Northeastern Montana: Stratigraphic Occurrences and Incisor Proportions". Bulletin of Carnegie Museum of Natural History. 36: 3–13. doi:10.2992/0145-9058(2004)36[3:PPPMAP]2.0.CO;2. S2CID131115333.
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. Bibcode:2016CaJES..53..343S. doi:10.1139/cjes-2015-0238. hdl:1807/71784.
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. Bibcode:2016CaJES..53..343S. doi:10.1139/cjes-2015-0238. hdl:1807/71784.
Clemens 2004 Clemens, William (2004). "Purgatorius (Plesiadapiformes, Primates?, Mammalia), A Paleocene Immigrant into Northeastern Montana: Stratigraphic Occurrences and Incisor Proportions". Bulletin of Carnegie Museum of Natural History. 36: 3–13. doi:10.2992/0145-9058(2004)36[3:PPPMAP]2.0.CO;2. S2CID131115333.