Pawnee Buttes (Upper Beds) (Miocene of the United States)

Also known as Euhl Pit; Tapir Hill; Uhl Pit

Where: Weld County, Colorado (40.8° N, 104.2° W: paleocoordinates 41.4° N, 101.2° W)

• coordinate based on political unit

When: Miocene (23.0 - 5.3 Ma)

• member-level stratigraphic resolution

Environment/lithology: terrestrial

Primary reference: R. H. Tedford, T. Galusha, M. F. Skinner, B. E. Taylor, R. W. Fields, J. R. Macdonald, J. M. Rensberger, S. D. Webb, and D. P. Whistler. 1987. Faunal succession and biochronology of the Arikareean through Hemphillian interval (late Oligocene through earliest Pliocene epochs) in North America. In M. O. Woodburne (ed.), Cenozoic Mammals of North America: Geochronology and Biostratigraphy 153-210 [J. Alroy/J. Alroy/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 18310: authorized by John Alroy, entered by John Alroy on 26.03.1995, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• from channels cutting into the Pawnee Creek Fm. and overlying Eubanks and Horse and Mastodon Quarries (see)
"Nothocyon vulpinus coloradoensis" Thorpe 1922e: probably from Gerry's Ranch (see also Wang et al. 1999)
Mammalia
 Rodentia - Mylagaulidae
Mylagaulidae indet.1 Cope 1881 rodent
 Rodentia - Cricetidae
Cricetidae indet.1 Fischer von Waldheim 1817 mouse
 Perissodactyla - Rhinocerotidae
"Aphelops planiceps n. sp." = Teleoceras medicornutum4
"Aphelops planiceps n. sp." = Teleoceras medicornutum4 Osborn 1904 rhinoceros
 Perissodactyla - Equidae
Hypohippus osborni n. sp.3, Parahippus coloradensis n. sp.5, Pseudhipparion sp., "Neohipparion coloradense" = Merychippus coloradense, "Protohippus labrosus n. sp." = Merychippus labrosus2, Pliohippus sp., "Merychippus campestris n. sp." = Pliohippus mirabilis3
Hypohippus osborni n. sp.3 Gidley 1907 anchitheriine horse
AMNH 9407, 9395
Parahippus coloradensis n. sp.5 Gidley 1907 anchitheriine horse
Pseudhipparion sp. Ameghino 1904 hipparionine horse
"Neohipparion coloradense" = Merychippus coloradense Osborn 1918 horse
"Neohipparion"; from Euhl Pit
"Protohippus labrosus n. sp." = Merychippus labrosus2 Cope 1874 horse
Pliohippus sp. Marsh 1874 horse
"Merychippus campestris n. sp." = Pliohippus mirabilis3 Leidy 1858 horse
AMNH 9069
 Artiodactyla - Antilocapridae
Merycodus sp. Leidy 1854 pronghorn
 Carnivora - Ursidae
Ursavus pawniensis Frick 1926 bear
at Tapir Hill and Uhl Pit: Hunt 1998a