Jefferson Ranch (Miocene of the United States)

Where: Brown County, Nebraska (42.7° N, 100.0° W: paleocoordinates 43.1° N, 97.4° W)

• coordinate based on political unit

When: Burge Member (Valentine Formation), Clarendonian (13.6 - 10.3 Ma)

Environment/lithology: terrestrial

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

PaleoDB collection 18212: authorized by John Alroy, entered by John Alroy on 26.07.1994

Creative Commons license: CC BY (attribution)

Taxonomic list

• data of Storer 1973 place this immediately east of Norden Bridge Quarry in the same section, but less exact data of Rich 1981 place it far to the east near Dutch Creek
Mammalia
 Theriamorpha - Erinaceidae
Metechinus amplior Rich 1981 hedgehog
UMMP collection
 Rodentia - Heteromyidae
Lignimus sp. Storer 1970 rodent
UMMP "Henry L. Jefferson Ranch" collection