UNSM Sx-1 (Lower Orella) (Oligocene of the United States)

Where: Sioux County, Nebraska (42.4° N, 103.8° W: paleocoordinates 43.6° N, 95.7° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: lower Orella Member (Brule Formation), Orellan (33.9 - 33.3 Ma)

Environment/lithology: terrestrial

Reposited in the UNSM

Primary reference: W. W. Korth and J. Hageman. 1988. Lagomorphs (Mammalia) from the Oligocene (Orellan and Whitneyan) Brule Formation, Nebraska. Transactions of the Nebraska Academy of Sciences 16:141-152 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 17206: authorized by John Alroy, entered by John Alroy on 05.08.1996

Creative Commons license: CC BY (attribution)

Taxonomic list

• entire fauna could be from Orella C; oreodonts are from "Brule Zone A"
Mammalia
 Lagomorpha - Leporidae
Palaeolagus haydeni Leidy 1856 rabbit
Orella C
Palaeolagus burkei Wood 1940 rabbit
Orella C
 Carnivora - Canidae
Hesperocyon gregarius3 Cope 1873 canid
Orella C
 Ungulata - Merycoidodontidae
Leptauchenia decora1 Leidy 1856 oreodont
Miniochoerus affinis2 Leidy 1869 oreodont
Miniochoerus gracilis2 Leidy 1851 oreodont