Elk Creek (360 m): Wasatchian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Leptictidae
Prodiacodon tauricinerei (Jepsen 1930)
Didelphodus absarokae (Cope 1881)
Mammalia - Apatemyidae
Apatemys kayi (Simpson 1929)
    = Labidolemur serus Gingerich 1982
Gingerich 1982
DUPLICATE REF 1645 or 1646 or 1647 or 1648 or 1649
Labidolemur kayi Simpson 1929
Gingerich 1982
"Apatemys DUPLICATE REF 1645 or 1646 or 1647 or 1648 or 1649
Mammalia - Coryphodontidae
Coryphodon sp. (Owen 1845)
original and current combination Lophiodon (Coryphodon)
"2"
Mammalia - Esthonychidae
Esthonyx bisulcatus Cope 1874
Mammalia - Condylarthra - Hyopsodontidae
Hyopsodus sp. Leidy 1870
"latidens/miticulus"
Mammalia - Macroscelidea - Apheliscidae
Apheliscus sp. Cope 1875
"wapitiensis/insidiosus"
Haplomylus speirianus (Cope 1880)
Mammalia - Acreodi - Mesonychidae
Pachyaena ossifraga Cope 1874
also listed by O'Leary and Rose 1995b as from USGS D-1924 (4 measurements)
Pachyaena gigantea Osborn and Wortman 1892
also listed by O'Leary and Rose 1995a as from YPM 149, 360 m level
Mammalia - Phenacodontidae
Ectocion osbornianus (Cope 1882)
Phenacodus primaevus (Cope 1873)
    = Phenacodus sp. Cope 1873
Alroy 2002
Mammalia - Perissodactyla - Equidae
Hyracotherium aemulor Gingerich 1991
recombined as Arenahippus aemulor
"H. sp. 2"
Mammalia - Procreodi - Arctocyonidae
Thryptacodon antiquus Matthew and Granger 1915
Mammalia - Diacodexeidae
Diacodexis robustus Sinclair 1914
    = Bunophorus robustus Sinclair 1914
Alroy 2002
Diacodexis metsiacus (Cope 1882)
    = Diacodexis sp. Cope 1882
Alroy 2002
Mammalia - Viverravidae
Viverravus sp. Marsh 1872
"V. acutus/gracilis"
Didymictis sp. Cope 1875
"curtidens/lysitensis"
Mammalia
Vulpavus australis Matthew and Granger 1915
Mammalia - Creodonta - Oxyaenidae
Oxyaena sp. Cope 1874
"intermedia/forcipata"
Palaeonictis occidentalis Osborn 1892
Mammalia - Creodonta
Prolimnocyon atavus Matthew and Granger 1915
Mammalia - Creodonta - Hyaenodontidae
Prototomus sp. Cope 1874
"1"
Tritemnodon sp. Matthew 1906
"1"
Tritemnodon strenua
    = Tritemnodon strenuus Cope 1875
Alroy 2002
Arfia opisthotoma (Matthew 1901)
    = Arfia sp. Van Valen 1965
Alroy 2002
Mammalia - Pantolestidae
Palaeosinopa veterrima Matthew 1901
Mammalia - Rodentia - Sciuravidae
cf. Knightomys depressus (Loomis 1907)
Dawsonomys minor Wood 1965
    = cf. Knightomys minor Wood 1965
Alroy 2002
Mammalia - Rodentia - Ischyromyidae
Paramys cf. excavatus Loomis 1907
Paramys cf. copei Loomis 1907
Mammalia - Primates - Paromomyidae
Phenacolemur praecox Matthew 1915
    = Phenacolemurinae indet. Simpson 1955
Alroy 2002
Mammalia - Primates - Omomyidae
Tetonoides tenuiculus (Jepsen 1930)
    = Teilhardina sp. Simpson 1940
Alroy 2002
Tetonius homunculus (Cope 1882)
    = Pseudotetonius ambiguus Matthew 1915
Bown and Rose 1987
USGS D-1340, 1386, 1387, Y-132, 136, 149, 278, 281, 284, 356
Mammalia - Primates - Notharctidae
Pelycodus sp. Cope 1875
    = Cantius sp. Simons 1962
Alroy 2002
"mckennai/trigonodus"
Mammalia - Primates - Microsyopidae
Microsyops sp. Leidy 1872
    = Microsyopidae indet. Osborn and Wortman 1892
Alroy 2002
Reptilia - Anguidae
Glyptosaurinae indet. Marsh 1872
ElShafie 2024
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:54.90000 - 50.50000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Willwood
Local section:ElkCr Local bed:360 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:YPM 132, 136, USGS D-1340, 1386, 1387 are in Washakie County, all others are in Big Horn County
Metadata
Also known as:YPM 81, 132, 136 (359 m), 149, 150, 151, 278, 279, 281, 284, 356, USGS D-1340 (364 m), 1386 (362 m), 1387 (360 m), 1924 (357 m)
Database number:15531
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]
87093 S. J. ElShafie. 2024. Body size estimation from isolated fossil bones reveals deep time evolutionary trends in North American lizards. PLoS ONE 19(1:e0296318):1-25 [P. Holroyd/P. Holroyd/P. Holroyd]
1645 P. D. Gingerich. 1982. Time resolution in mammalian evolution: sampling, lineages and faunal turnover. Proceedings of the Third North American Paleontological Convention 1:205-210 [J. Alroy/J. Alroy/M. Uhen]