Douglas Area Brule (5-6a) (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 17104: authorized by John Alroy, entered by John Alroy on 30.04.1994
Creative Commons license: CC BY (attribution)
Taxonomic list
• from c. 7 meters above tuff 5 to tuff 6a - the "Black Marker" of Wang 1994 appears to be tuff 6a
not clear from figure if L. evansi is really in this zone
not clear from figure if L. evansi is really in this zone
Show authors, comments, and common names
Mammalia | |
Leptictis dakotensis Leidy 1868 eutherian | |
Hypertragulus calcaratus Cope 1873 ruminant | |
Leptomeryx speciosus Lambe 1908 ruminant | |
Poebrotherium wilsoni Leidy 1847 camel | |
"Pseudocyclopidius orellaensis n. sp." = Leptauchenia decora, Miniochoerus chadronensis, "Merycoidodon culbertsoni" = Merycoidodon culbertsonii
"Pseudocyclopidius orellaensis n. sp." = Leptauchenia decora Leidy 1856 oreodont "Zone A... 'nodular layer above white layer' 9 mi. SE of Douglas"; also "8 miles southeast of Douglas, 15 feet above nodular layer" (could be above tuff 6a)
Miniochoerus chadronensis Schultz and Falkenbach 1956 oreodont
"Merycoidodon culbertsoni" = Merycoidodon culbertsonii Leidy 1848 oreodont | |
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Hesperocyon gregarius2 Cope 1873 canid various localities 30 and 55 ft above PWL and 3 and 30 ft below "Black Ash"
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Hyaenodon crucians Leidy 1853 creodont
Hyaenodon horridus Leidy 1853 creodont | |
Megalagus turgidus Cope 1873 rabbit
Palaeolagus intermedius Matthew 1899 rabbit
Palaeolagus haydeni Leidy 1856 rabbit | |
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"Scottimus viduus" = Willeumys viduus
"Scottimus viduus" = Willeumys viduus Korth 1981 mouse |