John Day Formation (English Wikipedia)

"Geology of John Day Fossil Beds" (PDF). National Park Service. 2013. Retrieved September 24, 2025.
Graham, John P. (August 2014). John Day Fossil Beds National Monument: Geologic Resources Inventory Report (PDF). Natural Resource Report NPS/NRSS/GRD/NRR—2014/846 (Report). National Park Service. Retrieved August 10, 2022.

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Peterson, Ryan; Samuels, Joshua; Rybcznskyi, Natalia; Ryan, Michael J; Maddin, Hillary C (April 2020). "The earliest mustelid in North America". Zoological Journal of the Linnean Society. 188 (4): 1318–1339.

paleolands.org (Global: low place; English: low place)

"The Geologic Formations of the John Day Basin" (PDF). Oregon Paleo Lands Institute. Archived from the original (PDF) on April 2, 2012.

researchgate.net (Global: 120^th place; English: 125^th place)

Samuels, Joshua X. (2021-08-21). "The first records of Sinclairella (Apatemyidae) from the Pacific Northwest, USA". PaleoBios. 38 (1). doi:10.5070/p9381053299. ISSN 2373-8189. S2CID 236332341.
Korth, W.; Samuels, J. (2015). "New Rodent Material from the John Day Formation (Arikareean, Middle Oligocene to Early Miocene) of Oregon". Annals of Carnegie Museum. 83 (1): 19–84. doi:10.2992/007.083.0102. S2CID 85780261.
Marriott, Katherine; Prothero, Donald R.; Beatty, Brian (August 2022). "Systematics of the nothokemadine camels (Artiodactyla: Camelidae)". New Mexico Museum of Natural History and Science Bulletin. 89: 295–302.
Stilson, Kelsey; Hopkins, Samantha; Davis, Edward Byrd (February 2016). "Osteopathology in Rhinocerotidae from 50 Million Years to the Present". PLOS ONE. 11 (2) e0146221. Bibcode:2016PLoSO..1146221S. doi:10.1371/journal.pone.0146221. PMC 4739690. PMID 26840633.

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Samuels, Joshua X. (2021-08-21). "The first records of Sinclairella (Apatemyidae) from the Pacific Northwest, USA". PaleoBios. 38 (1). doi:10.5070/p9381053299. ISSN 2373-8189. S2CID 236332341.
Hunt, Robert M. (2001). "Small Oligocene amphicyonids from North America (Paradaphoenus, Mammalia, Carnivora)". American Museum Novitates (3331): 1–20. doi:10.1206/0003-0082(2001)330<0001:BAOTLL>2.0.CO;2. hdl:2246/2884. S2CID 83979855.
Famoso, Nicholas A.; Orcutt, John D. (2022). "First occurrences of Palaeogale von Meyer, 1846 in the Pacific Northwest, United States". Geodiversitas. 44 (14): 427–436. doi:10.5252/geodiversitas2022v44a14. S2CID 248235332.
Korth, William W. (1994). "Middle Tertiary Marsupials (Mammalia) from North America". Journal of Paleontology. 68 (2): 376–397. Bibcode:1994JPal...68..376K. doi:10.1017/S0022336000022952. ISSN 0022-3360. JSTOR 1306077. S2CID 130386546.
Korth, W.; Samuels, J. (2015). "New Rodent Material from the John Day Formation (Arikareean, Middle Oligocene to Early Miocene) of Oregon". Annals of Carnegie Museum. 83 (1): 19–84. doi:10.2992/007.083.0102. S2CID 85780261.
Prothero, D. (2016). "A new genus of hesperhyine peccary (Artiodactyla: Tayassuidae) from the late Oligocene of Oregon". New Mexico Museum of Natural History and Science Bulletin. 74: 205–211. S2CID 6287992.
Coombs, Margery C.; Hunt, Robert M.; Stepleton, Ellen; Albright, L. Barry; Fremd, Theodore J. (2001). "Stratigraphy, Chronology, Biogeography, and Taxonomy of Early Miocene Small Chalicotheres in North America". Journal of Vertebrate Paleontology. 21 (3): 607–620. doi:10.1671/0272-4634(2001)021[0607:SCBATO]2.0.CO;2. ISSN 0272-4634. JSTOR 20061990. S2CID 131128421.
Coombs, Margery C.; Hunt Jr, Robert M. (2015). "New material of Moropus (Perissodactyla, Chalicotheriidae, Schizotheriinae) from the early Hemingfordian Rose Creek Member of the John Day Formation, Oregon, U.S.A.". Journal of Vertebrate Paleontology. 35 (6) e1009992. Bibcode:2015JVPal..35E9992C. doi:10.1080/02724634.2015.1009992. S2CID 129074972.
Hembree, Daniel I. (April 30, 2007). "Phylogenetic revision of Rhineuridae (Reptilia: Squamata: Amphisbaenia) from the Eocene to Miocene of North America". The University of Kansas Paleontological Contributions (15): 1–20. doi:10.17161/PCNS.1808.3763. hdl:1808/3763. S2CID 59354440.

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Coombs, Margery C.; Hunt Jr, Robert M. (2015). "New material of Moropus (Perissodactyla, Chalicotheriidae, Schizotheriinae) from the early Hemingfordian Rose Creek Member of the John Day Formation, Oregon, U.S.A.". Journal of Vertebrate Paleontology. 35 (6) e1009992. Bibcode:2015JVPal..35E9992C. doi:10.1080/02724634.2015.1009992. S2CID 129074972.

web.archive.org (Global: 1^st place; English: 1^st place)

"The Geologic Formations of the John Day Basin" (PDF). Oregon Paleo Lands Institute. Archived from the original (PDF) on April 2, 2012.
"Geology Fieldnotes". National Park Service. Archived from the original on July 5, 2015. Retrieved July 25, 2011.

worldcat.org (Global: 5^th place; English: 5^th place)

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Samuels, Joshua X. (2021-08-21). "The first records of Sinclairella (Apatemyidae) from the Pacific Northwest, USA". PaleoBios. 38 (1). doi:10.5070/p9381053299. ISSN 2373-8189. S2CID 236332341.
Barrett, Paul Z. (2016-02-09). "Taxonomic and systematic revisions to the North American Nimravidae (Mammalia, Carnivora)". PeerJ. 4 e1658. doi:10.7717/peerj.1658. ISSN 2167-8359. PMC 4756750. PMID 26893959.
Korth, William W. (1994). "Middle Tertiary Marsupials (Mammalia) from North America". Journal of Paleontology. 68 (2): 376–397. Bibcode:1994JPal...68..376K. doi:10.1017/S0022336000022952. ISSN 0022-3360. JSTOR 1306077. S2CID 130386546.
Lucas, Spencer G.; Emry, Robert J.; Foss, Scott E. (1998). "Taxonomy and distribution of Daeodon, an Oligocene-Miocene entelodont (Mammalia: Artiodactyla) from North America". Proceedings of the Biological Society of Washington. 111: 425–435. ISSN 0006-324X.
Stilson, Kelsey T.; Hopkins, Samantha S. B.; Davis, Edward Byrd (2016-08-02). "Correction: Osteopathology in Rhinocerotidae from 50 Million Years to the Present". PLOS ONE. 11 (8) e0160793. Bibcode:2016PLoSO..1160793S. doi:10.1371/journal.pone.0160793. ISSN 1932-6203. PMC 4970714. PMID 27483016.
Coombs, Margery C.; Hunt, Robert M.; Stepleton, Ellen; Albright, L. Barry; Fremd, Theodore J. (2001). "Stratigraphy, Chronology, Biogeography, and Taxonomy of Early Miocene Small Chalicotheres in North America". Journal of Vertebrate Paleontology. 21 (3): 607–620. doi:10.1671/0272-4634(2001)021[0607:SCBATO]2.0.CO;2. ISSN 0272-4634. JSTOR 20061990. S2CID 131128421.
Berman, David S. (1976). "A New Amphisbaenian (Reptilia: Amphisbaenia) from the Oligocene-Miocene John Day Formation, Oregon". Journal of Paleontology. 50 (1): 165–174. ISSN 0022-3360. JSTOR 1303648.

John Day Formation (English Wikipedia)

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