Powder River 51-20/21/22/23/24: Wasatchian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Coryphodontidae
Coryphodon sp. (Owen 1845)
original and current combination Lophiodon (Coryphodon)
Mammalia - Esthonychidae
Esthonyx bisulcatus Cope 1874
    = Esthonyx spatularius Cope 1880
Gingerich and Gunnell 1979
Mammalia - Macroscelidea - Apheliscidae
Apheliscus nitidus Simpson 1937
    = Apheliscus sp. Cope 1875
Gingerich 1994
possibly A. chydaeus
Haplomylus speirianus (Cope 1880)
Mammalia - Condylarthra - Hyopsodontidae
Hyopsodus miticulus (Cope 1874)
    = Hyopsodus sp. Leidy 1870
Alroy 2002
Mammalia - Perissodactyla - Palaeotheriidae
Hyracotherium angustidens (Cope 1875)
    = Hyracotherium sp. Owen 1841
Alroy 2002
Mammalia - Phenacodontidae
Ectocion osbornianus (Cope 1882)
Mammalia - Diacodexeidae
Diacodexis metsiacus (Cope 1882)
    = Diacodexis primus Krishtalka and Stucky 1985
Krishtalka and Stucky 1985
Mammalia - Erinaceidae
Erinaceidae indet. Fischer von Waldheim 1817
Novacek et al. 1985
"possibly" Dartonius jepseni; includes "cf. 'Leptacodon' jepseni"; "Nyctitheriidae indet." of Bown and Schankler 1982
Mammalia - Primates - Microsyopidae
Microsyops wilsoni Szalay 1969
    = Arctodontomys wilsoni Szalay 1969
Alroy 2002
see common names

Geography
Country:United States State/province:Wyoming County:Johnson
Coordinates: 44.0° North, 106.6° West (view map)
Paleocoordinates:48.5° North, 89.4° West
Basis of coordinate:based on political unit
Time
Period:Paleogene Epoch:Eocene
Stage:Ypresian 10 m.y. bin:Cenozoic 2
*Period:Tertiary
Key time interval:Wasatchian
Age range of interval:54.90000 - 50.50000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:"Wasatch"
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Metadata
Database number:16020
Authorizer:J. Alroy Enterer:J. Alroy
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:
1358. E. Delson. 1971. Fossil mammals of the early Wasatchian Powder River local fauna, Eocene of northeast. Bulletin of the American Museum of Natural History 146(4) [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]
1662 P. D. Gingerich. 1994. New species of Apheliscus, Haplomylus, and Hyopsodus (Mammalia, Condylarthra) from the late Paleocene of southern Montana and early Eocene of northwestern Wyoming. Contributions from the Museum of Paleontology, University of Michigan 29(6):119-134 [J. Alroy/J. Alroy/K. Beard]
1668 P. D. Gingerich and G. F. Gunnell. 1979. Systematics and Evolution of the Genus Esthonyx (Mammalia, Tillodontia) in the Early Eocene of North America. Contributions from the Museum of Paleontology, University of Michigan 25(7):125-153 [J. Alroy/J. Alroy/P. Mannion]
2183 L. Krishtalka and R. K. Stucky. 1985. Revision of the Eocene Wind River Faunas, Early Eocene of Central Wyoming. Part 7. Revision of Diacodexis (Mammalian, Artiodactyla). Annals of Carnegie Museum 54(14):413-486 [J. Alroy/J. Alroy/J. Marcot]
2668 M. J. Novacek, T. M. Bown, and D. Schankler. 1985. On the classification of early Tertiary Erinaceomorpha (Insectivora, Mammalia). American Museum Novitates 2813:1-22 [J. Alroy/J. Alroy/J. Alroy]