Shack Draw (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: C. B. Schultz and C. H. Falkenbach. 1968. The Phylogeny of the Oreodonts. Part 1: Merycoidodontinae, Eporeodontinae, and Leptaucheniinae, Three Subfamilies Of Oreodonts, With an Appendix to the Revision Of The Merycoidodontidae, and Part 2. Summary and Conclusions Concerning the Merycoidodontidae. Bulletin of the American Museum of Natural History 139:1-498 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 17178: authorized by John Alroy, entered by John Alroy on 26.03.1995

Creative Commons license: CC BY (attribution)

Taxonomic list

• apparently in the Seamen Hills area, see Wang 1994
all oreodonts of Schultz and Falkenbach 1956 are implicitly from "Brule Zone A"
"Hesperocyon gregarius" Wang 1994: "upper end of Shack Draw" (not clear if this is Chadronian or Orellan)
Mammalia
 Ungulata - Merycoidodontidae
Miniochoerus sp.1 Schultz and Falkenbach 1956 oreodont
Miniochoerus gracilis2 Leidy 1851 oreodont
"Merycoidodon culbertsoni" = Merycoidodon (Merycoidodon) culbertsoni Leidy 1848 oreodont
includes their "M. culbertsoni osborni"; "Otionohyus wardi"; and "Genetochoerus periculorum" - all from Brule Zone A