Spring Draw (Orellan) (Oligocene of the United States)
Where: Niobrara County, Wyoming (43.0° N, 104.5° W: paleocoordinates 44.2° N, 96.4° W)
• coordinate based on political unit
When: Orellan (33.9 - 33.3 Ma)
Environment/lithology: terrestrial
Primary reference: X. Wang. 1994. Phylogenetic systematics of the Hesperocyoninae (Carnivora: Canidae). Bulletin of the American Museum of Natural History 221:1-207 [J. Alroy/J. Alroy/J. Alroy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 17193: authorized by John Alroy, entered by John Alroy on 18.10.1995
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
Mammalia | |
"Platyochoerus platycephalus" = Miniochoerus affinis1, "Merycoidodon culbertsoni" = Merycoidodon culbertsonii2
"Platyochoerus platycephalus" = Miniochoerus affinis1 Leidy 1869 oreodont (synonym of M. affinis): Brule Zone A M. ("Stenopsochoerus") chadronensis Schultz and Falkenbach 1956; includes their "S. douglasensis"; sample is apparently stratigraphically mixed because affinis and chadronensis form a chronocline elsewhere
"Merycoidodon culbertsoni" = Merycoidodon culbertsonii2 Leidy 1848 oreodont includes their "M. culbertsoni osborni"; "Paramerycoidodon georgei" "Otionohyus wardi"; and "Genetochoerus periculorum" - all from Brule Zone A
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Hesperocyon gregarius Cope 1873 canid "Upper Spring Draw, Indian Creek area, Hat Creek Basin... Orellan"; "Piper Ranch, Spring Draw" - 15, 35, and 75 ft above PWL; "Spring Draw, 1.5 mi W of Ant Hill" 70 ft above PWL
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