Douglas Mountain (Miocene of the United States)

Where: Moffat County, Colorado (40.6° N, 108.1° W: paleocoordinates 41.2° N, 105.2° W)

• coordinate based on political unit

When: Weller Sandstone Member (Browns Park Formation), Miocene (23.0 - 5.3 Ma)

Environment/lithology: terrestrial

Primary reference: O. A. Peterson. 1928. The Brown's Park Formation. Memoirs of the Carnegie Museum 11(2):87-130 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 18874: authorized by John Alroy, entered by John Alroy on 27.09.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• type area of Browns Park Fm.
while this name is not applied by Peterson, Honey and Izett 1988 use it to distinguish his fauna from theirs
type of "Bassariscops willistoni" is from 1 mi SW of Sunbeam, which is a different locality according to Honey and Izett 1988; referred specimen is actually Cynarctoides lemur: Wang et al. 1999
"Merycoidodontidae indet." Honey and Izett 1988: "Ticholeptus?" from Emma (Gilsonite) Mine "near the bluff of the White River canyon in Utah"
"camelid" presumably the "camelid closely allied to Stenomylus" that is actually an antilocaprine: Frick and Taylor 1968
presumed chalicothere is actually a "Teleodus" from the Duchesne River Fm. near Vernal, UT: Skinner 1968
Mammalia
 Perissodactyla - Rhinocerotidae
Peraceras superciliosum Cope 1880 rhinoceros
 Proboscidea - Gomphotheriidae
Gomphotherium obscurum Leidy 1869 gomphothere
 Ungulata - Antilocapridae
Merycodontinae indet. Matthew 1904 pronghorn