North Branch of Cottonwood Creek (Miocene of the United States)

Where: Dawes County, Nebraska (42.8° N, 103.1° W: paleocoordinates 43.5° N, 99.2° W)

• coordinate based on political unit

When: Runningwater Formation, Early/Lower Hemingfordian (20.4 - 16.0 Ma)

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Primary reference: T. H. V. Rich. 1981. Origin and History of the Erinaceinae and Brachyericinae (Mammalia, Insectivora) in North America. Bulletin of the American Museum of Natural History 171(1):1-116 [J. Alroy/J. Alroy/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 17974: authorized by John Alroy, entered by John Alroy on 26.03.1995

Creative Commons license: CC BY (attribution)

Taxonomic list

• may be the same as Ahren's Prospect, Elder Ranch, and/or Oreolagus nebrascensis type locality (see)
Mammalia
 Theriamorpha - Erinaceidae
Brachyerix richi n. sp. Martin and Lim 2004 hedgehog