Southwestern End of Seamen Hills (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 17196: authorized by John Alroy, entered by John Alroy on 05.08.1996

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Carnivora - Canidae
Hesperocyon gregarius Cope 1873 canid
20 and 30 ft above PWL
 Artiodactyla - Merycoidodontidae
"Otionohyus wardi" = Merycoidodon culbertsonii2, "Platyochoerus platycephalus" = Miniochoerus affinis1
"Otionohyus wardi" = Merycoidodon culbertsonii2 Leidy 1848 oreodont
"SW. end of Seamen Hills" base of UPW, Brule Zone A
"Platyochoerus platycephalus" = Miniochoerus affinis1 Leidy 1869 oreodont
"S. W. end of Seamen Hills" Brule Zone A