Sand Canyon (Dawes Clay) (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: Dawes Clay Member (Box Butte Formation), Hemingfordian (20.4 - 16.0 Ma)

Environment/lithology: terrestrial

Primary reference: T. Galusha. 1975. Stratigraphy of the Box Butte Formation, Nebraska. Bulletin of the American Museum of Natural History 156(1) [J. Alroy/J. Alroy/J. Ju]more details

PaleoDB collection 17990: authorized by John Alroy, entered by John Alroy on 26.03.1995, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• coordinates place these about 1 mile apart and 2 mi SE of Sand Canyon Quarry
Mammalia
 Perissodactyla - Equidae
Parahippus cognatus1 Leidy 1858 anchitheriine horse
F:AM 71700
 Artiodactyla - Palaeomerycidae
Bouromeryx americanus2 Douglass 1899 ruminant
 Artiodactyla - Antilocapridae
Merycodontinae indet. Matthew 1904 pronghorn
 Artiodactyla - Merycoidodontidae
"Brachycrus wilsoni" = Brachycrus laticeps3, Brachycrus siouense3
"Brachycrus wilsoni" = Brachycrus laticeps3 Douglass 1900 oreodont
Tentatively referred to B. wilsoni. From Sand Canyon, Dawes County, Nebraska (collected by Ted Galusha, 1938):
Brachycrus siouense3 Sinclair 1915 oreodont
Sand Canyon, southwest of Hay Springs