Cedar Pass (Barren Clays) (Oligocene of the United States)

Where: Jackson County, South Dakota (43.5° N, 101.9° W: paleocoordinates 44.4° N, 94.3° W)

• coordinate based on political unit

When: lower Poleslide Member (Brule Formation), Whitneyan (33.3 - 30.8 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 17315: authorized by John Alroy, entered by John Alroy on 26.03.1995

Creative Commons license: CC BY (attribution)

Taxonomic list

• at the far eastern end of the Badlands
level unclear: Cynarctoides lemur Wang et al. 1999: "Cedar Pass, ? Poleslide Member... UCMP loc. V7228"
based on paleomag of Prothero and Swisher 1992, the Upper Oreodon zone is in a normal zone here and a reversed zone near the type area at Sheep Mountain Table, where the same normal zone falls within the AMNH "Protoceras Beds"
Mammalia
 Carnivora - Canidae
Cynodesmus thooides Scott 1893 canid
0.25 mi W of Cedar Pass, top part of Upper Oreodon Beds
"Mesocyon" temnodon Wortman and Matthew 1899 canid
0.25 mi W of Cedar Pass and near top of Cedar Pass, both from top of Upper Oreodon beds; 3 mi W of Cedar Pass, in base of Upper Oreodon beds
 Artiodactyla - Merycoidodontidae
Merycoidodon bullatus1 Leidy 1869 oreodont
 Artiodactyla - Tayassuidae
Perchoerus cf. probus2 Leidy 1856 peccary
"upper Oreodon beds... vicinity of Cedar Pass, near Interior in Jackson County"; said to "probably" be this species