UNSM Sx-18 (Orella A) (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. 1989. Aplodontid Rodents (Mammalia) from the Oligocene (Orellan and Whitneyan) Brule Formation, Nebraska. Journal of Vertebrate Paleontology 9(4):400-414 [J. Alroy/J. Alroy/J. Ju]more details

PaleoDB collection 17252: authorized by John Alroy, entered by John Alroy on 05.08.1996

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Artiodactyla - Leptochoeridae
Leptochoerus elegans1 Macdonald 1955 even-toed ungulate
Orella A
 Rodentia - Aplodontidae
Prosciurus parvus Korth 1989 mountain beaver
Orella A or B
 Lagomorpha - Leporidae
Megalagus turgidus2 Cope 1873 rabbit
Orella A
Palaeolagus hemirhizis2 Korth and Hageman 1988 rabbit
Orella A