Elk Creek (370 m): Wasatchian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Rodentia - Ischyromyidae
Paramys cf. copei Loomis 1907
Paramys cf. excavatus Loomis 1907
Mammalia - Rodentia - Sciuravidae
cf. Knightomys depressus (Loomis 1907)
Dawsonomys minor Wood 1965
    = cf. Knightomys minor Wood 1965
Alroy 2002
Mammalia - Primates - Microsyopidae
Microsyops sp. Leidy 1872
    = Microsyopidae indet. Osborn and Wortman 1892
Alroy 2002
Mammalia - Primates - Notharctidae
Pelycodus sp. Cope 1875
    = Cantius sp. Simons 1962
Alroy 2002
"mckennai/trigonodus"
Mammalia - Primates - Paromomyidae
Phenacolemur praecox Matthew 1915
    = Phenacolemurinae indet. Simpson 1955
Alroy 2002
Mammalia - Primates - Omomyidae
Tetonius homunculus (Cope 1882)
    = Pseudotetonius ambiguus Matthew 1915
Bown and Rose 1987
USGS D-1635, Y-142, 277, 334
Mammalia - Dermoptera
Plagiomene multicuspis Matthew 1918
Mammalia - Perissodactyla - Equidae
Hyracotherium aemulor Gingerich 1991
recombined as Arenahippus aemulor
"H. sp. 2"
Hyracotherium grangeri Gingerich 1989
recombined as Sifrhippus grangeri
"H. sp. 1"
Mammalia - Phenacodontidae
Ectocion osbornianus (Cope 1882)
Phenacodus primaevus (Cope 1873)
    = Phenacodus sp. Cope 1873
Alroy 2002
Mammalia - Diacodexeidae
Diacodexis metsiacus (Cope 1882)
    = Diacodexis sp. Cope 1882
Alroy 2002
Bunophorus etsagicus (Cope 1882)
    = Bunophorus sp. Sinclair 1914
Alroy 2002
Mammalia - Procreodi - Arctocyonidae
Thryptacodon antiquus Matthew and Granger 1915
Mammalia - Creodonta - Oxyaenidae
Oxyaena sp. Cope 1874
"intermedia/forcipata"
Mammalia - Creodonta
Prolimnocyon atavus Matthew and Granger 1915
at USGS D-1422: Gebo and Rose 1993
Mammalia - Creodonta - Hyaenodontidae
Tritemnodon sp. Matthew 1906
"1"
Tritemnodon strenua
    = Tritemnodon strenuus Cope 1875
Alroy 2002
Prototomus sp. Cope 1874
"1"
Mammalia - Viverravidae
Didymictis sp. Cope 1875
"curtidens/lysitensis"
Mammalia
Vulpavus australis Matthew and Granger 1915
Mammalia - Acreodi - Mesonychidae
Pachyaena ossifraga Cope 1874
Mammalia - Condylarthra - Hyopsodontidae
Hyopsodus sp. Leidy 1870
"latidens/miticulus"
Mammalia - Macroscelidea - Apheliscidae
Apheliscus sp. Cope 1875
"wapitiensis/insidiosus"
Haplomylus scottianus Gingerich 1994
Gingerich 1994
YM-319; presumably includes "H. speirianus"
Mammalia - Pantolestidae
Palaeosinopa veterrima Matthew 1901
Mammalia - Coryphodontidae
Coryphodon sp. (Owen 1845)
original and current combination Lophiodon (Coryphodon)
"2"
Mammalia - Esthonychidae
Esthonyx bisulcatus Cope 1874
Reptilia - Testudines
Planetochelys dithyros Hutchison 2013
Hutchison 2013
at UCMP V80012 (=Yale 280)
see common names

Geography
Country:United States State/province:Wyoming County:Big Horn
Coordinates: 44.5° North, 108.0° West (view map)
Paleocoordinates:49.2° North, 90.8° West
Basis of coordinate:based on political unit
Geographic resolution:small collection
Time
Period:Paleogene Epoch:Eocene
Stage:Ypresian 10 m.y. bin:Cenozoic 2
*Period:Tertiary
Key time interval:Wasatchian
Age range of interval:55.80000 - 50.30000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Willwood
Local section:ElkCr Local bed:370 m
Local order:bottom to top
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Taxonomic list comments:USGS D-1422 is from Washakie County
Metadata
Also known as:YPM 82a, 277, 280, 282, 283, 298, 299, 419, 142, 334, 360, USGS D-1422, D-1635
Database number:15532
Authorizer:J. Alroy, P. Holroyd Enterer:J. Alroy, P. Holroyd
Research group:vertebrate
Created:1993-02-18 00:00:00 Last modified:2002-06-03 03:27:40
Access level:the public Released:1993-02-18 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

3021. D. M. Schankler. 1980. Faunal Zonation of the Willwood Formation in the Central Bighorn Basin, Wyoming. University of Michigan Papers on Paleontology 24:99-114 [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]
1123 T. M. Bown and K. D. Rose. 1987. Patterns of Dental Evolution in Early Eocene Anaptomorphine Primates (Omomyidae) from the Bighorn Basin, Wyoming. Paleontological Society Memoir 23:1-162 [J. Alroy/J. Alroy/J. Ju]
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]
55096 J. H. Hutchison. 2013. New turtles from the Paleogene of North America. In D. B. Brinkman, P. A. Holroyd, J. D. Gardner (eds.), Morphology and Evolution of Turtles 477-497 [P. Holroyd/P. Holroyd]