Douglas Area Brule (5-6a): Orellan, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Leptictidae
Leptictis dakotensis (Leidy 1868)
Mammalia - Creodonta - Hyaenodontidae
Hyaenodon crucians Leidy 1853
Hyaenodon horridus Leidy 1853
Mammalia - Carnivora - Canidae
Hesperocyon gregarius (Cope 1873)
Wang 1994
various localities 30 and 55 ft above PWL and 3 and 30 ft below "Black Ash"
Mammalia - Carnivora - Palaeogalidae
Palaeogale lagophaga (Cope 1873)
    = Palaeogale sectoria Gervais 1848
Alroy 2002
Mammalia - Merycoidodontidae
Miniochoerus chadronensis (Schultz and Falkenbach 1956)
Merycoidodon culbertsoni (Leidy 1848)
original and current combination Merycoidodon culbertsonii
Pseudocyclopidius orellaensis n. sp. Schultz and Falkenbach 1968
synonym of Leptauchenia decora
"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)
Mammalia - Camelidae
Poebrotherium eximium Hay 1902
see also Prothero 1996d
Poebrotherium wilsoni Leidy 1847
Poebrotherium labiatum Cope 1881
recombined as Paratylopus labiatus
see also Prothero 1996d
Mammalia - Hypertragulidae
Hypertragulus calcaratus (Cope 1873)
Mammalia - Leptomerycidae
Leptomeryx speciosus Lambe 1908
Mammalia - Lagomorpha - Leporidae
Megalagus turgidus (Cope 1873)
Litolagus molidens Dawson 1958
may include type of Dawson 1958 from LNZ 6.5 mi SE of Douglas
Palaeolagus haydeni Leidy 1856
Palaeolagus intermedius Matthew 1899
Mammalia - Rodentia - Cricetidae
Scottimus viduus Korth 1981
recombined as Willeumys viduus
Mammalia - Rodentia - Ischyromyidae
Ischyromys parvidens Miller and Gidley 1920
    = Ischyromys sp. Leidy 1856
Alroy 2002
see common names

Geography
Country:United States State/province:Wyoming County:Converse
Coordinates: 42.9° North, 105.2° West (view map)
Paleocoordinates:44.2° North, 97.1° West
Basis of coordinate:based on political unit
Time
Period:Paleogene Epoch:Oligocene
Stage:Rupelian 10 m.y. bin:Cenozoic 4
*Period:Tertiary
Key time interval:Orellan
Age range of interval:33.90000 - 31.80000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Brule
Local section:WRGWY Local bed:10
Local order:bottom to top
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Taxonomic list comments: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
Metadata
Database number:17104
Authorizer:J. Alroy Enterer:J. Alroy
Research group:vertebrate
Created:1994-04-30 00:00:00 Last modified:2002-06-03 03:27:41
Access level:the public Released:1994-04-30 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
1470. 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]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
3069 C. B. Schultz and C. H. Falkenbach. 1968. The Phylogeny of the Oreodonts. Part 1: Merycoidodontinae, Eporeodontinae, and Leptaucheniinae, Three Subfamilies Of Oreodonts, With an Appendix to the Revision Of The Merycoidodontidae, and Part 2. Summary and Conclusions Concerning the Merycoidodontidae. Bulletin of the American Museum of Natural History 139:1-498 [J. Alroy/J. Alroy/J. Marcot]
6226 X. Wang. 1994. Phylogenetic systematics of the Hesperocyoninae (Carnivora: Canidae). Bulletin of the American Museum of Natural History 221:1-207 [J. Alroy/J. Alroy/J. Alroy]