Elk Creek (190 m): Wasatchian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Leptictidae
Prodiacodon tauricinerei (Jepsen 1930)
Mammalia - Rodentia - Ischyromyidae
Paramys cf. copei Loomis 1907
Paramys cf. excavatus Loomis 1907
Mammalia - Rodentia - Sciuravidae
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
Haplomylus speirianus (Cope 1880)
recombined as Microsyops speirianus
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)
    = Tetonius matthewi Bown and Rose 1987
Bown and Rose 1987
from Y-214, 363
Tetonoides tenuiculus (Jepsen 1930)
    = Teilhardina crassidens Bown and Rose 1987
Bown and Rose 1987
from Y-363
Mammalia - Perissodactyla - Equidae
Hyracotherium aemulor Gingerich 1991
recombined as Arenahippus aemulor
"H. sp. 2"
Mammalia - Phenacodontidae
Phenacodus brachypternus Cope 1882
    = Copecion brachypternus Cope 1882
Alroy 2002
Ectocion osbornianus (Cope 1882)
Phenacodus vortmani (Cope 1880)
Phenacodus intermedius Granger 1915
Mammalia - Diacodexeidae
Diacodexis metsiacus (Cope 1882)
    = Diacodexis sp. Cope 1882
Alroy 2002
Mammalia - Creodonta - Oxyaenidae
Oxyaena sp. Cope 1874
"intermedia/forcipata"
Mammalia - Creodonta
Prolimnocyon atavus Matthew and Granger 1915
Mammalia - Creodonta - Hyaenodontidae
Tritemnodon sp. Matthew 1906
"1"
Prototomus sp. Cope 1874
"1"
Arfia opisthotoma (Matthew 1901)
    = Arfia sp. Van Valen 1965
Alroy 2002
Mammalia - Viverravidae
Didymictis leptomylus Cope 1880
Viverravus sp. Marsh 1872
"V. acutus/gracilis"
Viverravus sp. Marsh 1872
"3"
Mammalia
Miacis exiguus Matthew and Granger 1915
    = Miacis sp. Cope 1872
Alroy 2002
Vassacyon promicrodon (Wortman and Matthew 1899)
Mammalia - Condylarthra - Hyopsodontidae
Hyopsodus sp. Leidy 1870
"loomisi/minor"
Mammalia - Macroscelidea - Apheliscidae
Apheliscus sp. Cope 1875
"wapitiensis/insidiosus"
Mammalia - Proteutheria - Palaeoryctidae
Palaeoryctes cf. punctatus Van Valen 1966
    = Palaeoryctes sp. Matthew 1913
Bown and Schankler 1982
from YM 363
cf. Pararyctes sp. Van Valen 1966
Bown and Schankler 1982
"Pararyctes sp. 1" from YM 363
Mammalia - Apatemyidae
Apatemys kayi (Simpson 1929)
    = Labidolemur kayi Simpson 1929
Alroy 2002
Mammalia - Coryphodontidae
Coryphodon sp. (Owen 1845)
original and current combination Lophiodon (Coryphodon)
"2"
Coryphodon sp. (Owen 1845)
original and current combination Lophiodon (Coryphodon)
"1"
Mammalia - Esthonychidae
Esthonyx spatularius Cope 1880
Mammalia
Peratherium macgrewi Bown 1979
    = Copedelphys innominata Simpson 1928
Alroy 2002
recombined as Herpetotherium innominatum
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:190 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:note: Y-215W was placed at this level by Schankler but is at 180 m, see Bown and Rose 1987
Metadata
Also known as:YPM 111, 140, 214, 363 (= USGS 2151)
Database number:15516
Authorizer:J. Alroy Enterer:J. Alroy
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]
1125 T. M. Bown and D. Schankler. 1982. A review of the Proteutheria and Insectivora of the Willwood Formation (Lower Eocene), Bighorn Basin, Wyoming. United States Geological Survey Bulletin 1523:1-79 [J. Alroy/J. Alroy/J. Ju]