Douglas Area Upper Chadron: Chadronian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Creodonta - Hyaenodontidae
Hyaenodon crucians Leidy 1853
Hyaenodon horridus Leidy 1853
Mammalia - Camelidae
Poebrotherium eximium Hay 1902
see also Prothero 1996d
Mammalia - Merycoidodontidae
Otionohyus wardi Schultz and Falkenbach 1968
    = Miniochoerus forsythae Schultz and Falkenbach 1968
Stevens and Stevens 1996
includes type of "Otionohyus wardi degrooti": replaces ID of Schultz and Falkenbach 1968 from 30' below PWL 8 mi. SE of Douglas
Miniochoerus chadronensis (Schultz and Falkenbach 1956)
includes "Stenopsochoerus douglasensis" Schultz and Falkenbach 1956 from Chadron Fm., UNSM Wyo-3 7 mi SE of Douglas
Merycoidodon culbertsoni (Leidy 1848)
original and current combination Merycoidodon culbertsonii
Mammalia - Leptomerycidae
Leptomeryx speciosus Lambe 1908
Mammalia - Protoceratidae
Leptotragulus sp. Scott and Osborn 1887
    = Protoceratidae indet. Marsh 1891
Alroy 2002
Mammalia - Perissodactyla - Brontotheriidae
Brontotheriidae indet. (Marsh 1873)
Mammalia - Perissodactyla - Rhinocerotidae
Subhyracodon mitis (Cope 1875)
Prothero 2005
"From the late Chadronian: ... from Douglas, Converse County, Wyoming"
Mammalia - Lagomorpha - Leporidae
Megalagus turgidus (Cope 1873)
Megalagus brachyodon (Matthew 1903)
Palaeolagus haydeni Leidy 1856
Mammalia - Rodentia - Eomyidae
Yoderimys sp. Wood 1955
    = Yoderimyinae indet. Wood 1955
Alroy 2002
Mammalia - Rodentia - Ischyromyidae
Ischyromys parvidens Miller and Gidley 1920
    = Ischyromyidae indet. Alston 1876
Alroy 2002
Titanotheriomys veterior (Matthew 1903)
original and current combination Ischyromys veterior
Mammalia - Leptictidae
Leptictis dakotensis (Leidy 1868)
see common names

Geography
Country:United States State/province:Wyoming County:Converse
Coordinates: 42.9° North, 105.2° West (view map)
Paleocoordinates:44.4° North, 96.5° West
Basis of coordinate:based on political unit
Time
Period:Paleogene Epoch:Eocene
Stage:Priabonian 10 m.y. bin:Cenozoic 3
*Period:Tertiary
Key time interval:Chadronian
Age range of interval:37.00000 - 33.90000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Chadron
Local section:WRGWY Local bed:8
Local order:bottom to top
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Taxonomic list comments:tuffs 4 and 5 are above, not correlable with, the F:AM "Upper Puprle White": Larson and Evanoff 1998
between tuffs 4 and 5
Metadata
Database number:16942
Authorizer:J. Alroy, J. Marcot Enterer:J. Alroy, J. Marcot
Research group:vertebrate
Created:1993-02-18 00:00:00 Last modified:2002-06-03 03:27:41
Access level:the public Released:1993-02-18 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]
51726 D. R. Prothero. 2005. The Evolution of North American Rhinoceroses. 1-218 [J. Marcot/J. Marcot]
6270 M. S. Stevens and J. B. Stevens. 1996. Merycoidodontinae and Miniochoerinae. In D. R. Prothero and R. J. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America 498-573 [J. Alroy/J. Alroy/J. Alroy]