Grouse Creek Valley (Miocene to of the United States)

Where: Box Elder County, Utah (41.5° N, 112.9° W: paleocoordinates 42.3° N, 109.4° W)

• coordinate based on political unit

When: Salt Lake Formation, Early/Lower Hemingfordian to Early/Lower Hemingfordian (20.4 - 12.5 Ma)

• said to be early Hemingfordian to early Barstovian

Environment/lithology: terrestrial

Primary reference: P. H. McClellan. 1976. New evidence for the age of the Cenozoic Salt Lake beds in northeastern Great Basin. Bulletin of the American Association of Petroleum Geologists 60(12):2185 [J. Alroy/J. Alroy/J. Ju]more details

PaleoDB collection 18915: authorized by John Alroy, entered by John Alroy on 19.05.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• said to be early Hemingfordian or early Barstovian by Tedrow and Robison 1999
Mammalia
 Rodentia - Aplodontidae
Liodontia sp. Miller and Gidley 1918 mountain beaver
 Rodentia - Heteromyidae
Cupidinimus sp. Wood 1935 rodent
 Perissodactyla - Equidae
Equinae indet. Steinmann and Döderlein 1890 horse
Hypohippus sp. Leidy 1858 anchitheriine horse
 Artiodactyla - Antilocapridae
Merriamoceros sp. Frick 1937 pronghorn
Merycodontinae indet. Matthew 1904 pronghorn