Douglas Area Brule (Above 6d) (Oligocene of the United States)

Where: Converse County, Wyoming (42.9° N, 105.2° W: paleocoordinates 44.2° N, 97.1° W)

• coordinate based on political unit

When: Brule Formation, Orellan (33.9 - 33.3 Ma)

Environment/lithology: terrestrial

Primary reference: E. Evanoff, D. R. Prothero, and R. H. Lander. 1992. Elocene-Oligocene climatic change in North America: The White River Formation near Douglass, East-Central Wyoming. 116-130 [J. Alroy/J. Alroy/M. Uhen]more details

PaleoDB collection 17106: authorized by John Alroy, entered by John Alroy on 30.04.1994

Creative Commons license: CC BY (attribution)

Taxonomic list

• between tuffs 6d and 7
Mammalia
 Theriamorpha - Leptictidae
Leptictis dakotensis Leidy 1868 eutherian
 Rodentia - Ischyromyidae
Ischyromys sp.1 Leidy 1856 rodent
 Rodentia - Cricetidae
"Scottimus viduus" = Willeumys viduus, Eumys elegans
"Scottimus viduus" = Willeumys viduus Korth 1981 mouse
Eumys elegans Leidy 1856 mouse
includes "E. obliquidens"
 Lagomorpha - Leporidae
Palaeolagus haydeni Leidy 1856 rabbit
Megalagus turgidus Cope 1873 rabbit
 Artiodactyla - Camelidae
Poebrotherium wilsoni Leidy 1847 camel
 Artiodactyla - Hypertragulidae
Hypertragulus calcaratus Cope 1873 ruminant
 Artiodactyla - Leptomerycidae
Leptomeryx evansi Leidy 1853 ruminant
 Artiodactyla - Merycoidodontidae
"Merycoidodon culbertsoni" = Merycoidodon culbertsonii, Miniochoerus gracilis
"Merycoidodon culbertsoni" = Merycoidodon culbertsonii Leidy 1848 oreodont
Miniochoerus gracilis Leidy 1851 oreodont
 Creodonta - Hyaenodontidae
Hyaenodon crucians Leidy 1853 creodont
Hyaenodon horridus Leidy 1853 creodont
 Carnivora - Palaeogalidae
"Palaeogale lagophaga" = Bunaelurus lagophagus
"Palaeogale lagophaga" = Bunaelurus lagophagus Cope 1873 carnivoran
 Carnivora - Canidae
Hesperocyon gregarius2 Cope 1873 canid
specimen from Reno Ranch, S of Tower area, 60 ft above "Black Ash"; specimen from KU-WY-057 "Whitneyan" in Douglas area