Elk Creek (180 m): Wasatchian, Wyoming
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
- Anguidae
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cf. Melanosaurus sp.
Gilmore 1928
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ElShafie 2024 | |||||||||
from Y-88 | ||||||||||
Mammalia
- Leptictidae
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Prodiacodon tauricinerei
(Jepsen 1930)
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Mammalia
- Coryphodontidae
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Coryphodon informal sp. 2
(Owen 1845)
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original and current combination Lophiodon (Coryphodon) | ||||||||||
"2" | ||||||||||
Coryphodon informal sp. 1
(Owen 1845)
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original and current combination Lophiodon (Coryphodon) | ||||||||||
"1" | ||||||||||
Mammalia
- Esthonychidae
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Esthonyx spatularius
Cope 1880
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Mammalia
- Macroscelidea
- Amphilemuridae
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Macrocranion nitens
(Matthew 1918)
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Mammalia
- Macroscelidea
- Apheliscidae
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Apheliscus sp.
Cope 1875
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"wapitiensis/insidiosus" | ||||||||||
Haplomylus speirianus
(Cope 1880)
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Mammalia
- Condylarthra
- Hyopsodontidae
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Hyopsodus sp.
Leidy 1870
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"loomisi/minor" | ||||||||||
Mammalia
- Acreodi
- Mesonychidae
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Pachyaena ossifraga
Cope 1874
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Mammalia
- Creodonta
- Hyaenodontidae
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Arfia opisthotoma
(Matthew 1901)
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= Arfia sp.
Van Valen 1965
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Alroy 2002 | |||||||||
Tritemnodon sp.
Matthew 1906
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"1" | ||||||||||
Mammalia
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Uintacyon massetericus
(Cope 1882)
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Mammalia
- Viverravidae
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Viverravus informal acutus/gracilis
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"V. acutus/gracilis" | ||||||||||
Viverravus sp.
Marsh 1872
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"2" | ||||||||||
Didymictis leptomylus
Cope 1880
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Mammalia
- Perissodactyla
- Equidae
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Hyracotherium aemulor
Gingerich 1991
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"H. sp. 2" | ||||||||||
= Arenahippus grangeri
Gingerich 1989
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Froehlich 2002 | |||||||||
recombined as Sifrhippus grangeri | ||||||||||
Mammalia
- Phenacodontidae
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Ectocion osbornianus
(Cope 1882)
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Phenacodus intermedius
Granger 1915
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Phenacodus vortmani
(Cope 1880)
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Mammalia
- Diacodexeidae
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Diacodexis metsiacus
(Cope 1882)
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= Diacodexis sp.
Cope 1882
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Alroy 2002 | |||||||||
Mammalia
- Procreodi
- Arctocyonidae
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Thryptacodon antiquus
Matthew and Granger 1915
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Mammalia
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Dormaaliidae indet.
Quinet 1964
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= Talpavoides dartoni
Bown and Schankler 1982
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Bown and Schankler 1982 | |||||||||
Mammalia
- Rodentia
- Sciuravidae
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cf. Knightomys depressus
(Loomis 1907)
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Mammalia
- Rodentia
- Ischyromyidae
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Paramys cf. excavatus
Loomis 1907
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Mammalia
- Primates
- Notharctidae
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Pelycodus sp.
Cope 1875
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= Cantius sp.
Simons 1962
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Alroy 2002 | |||||||||
"mckennai/trigonodus" | ||||||||||
Mammalia
- Primates
- Omomyidae
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Tetonoides tenuiculus
(Jepsen 1930)
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= Teilhardina crassidens n. sp.
Bown and Rose 1987
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Bown and Rose 1987 | |||||||||
from Y-87, Y-215W, Y-377, UW V-73125 (type) | ||||||||||
Tetonius homunculus
(Cope 1882)
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= Tetonius matthewi n. sp.
Bown and Rose 1987
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Bown and Rose 1987 | |||||||||
USGS D-1224, 1225, UW V-73125, Y-144: type is from a CM locality "surrounded by sites" at about this level | ||||||||||
Mammalia
- Primates
- Microsyopidae
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Microsyops sp.
Leidy 1872
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= Microsyopidae indet.
Osborn and Wortman 1892
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Alroy 2002 | |||||||||
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 |
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 |
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 localities are in Big Horn County, two USGS localities are in Washakie County note: Y-215W originally placed at 190 m, placed at 180 m by Bown and Rose (1987) |
Metadata
Also known as: | YPM 87, 88, 98, 101, 144, 215W, 345, 377, 388, 408; USGS D-1224 (=UW V-73125), 1225 | ||
Database number: | 15514 | ||
Authorizer: | J. Alroy, P. Holroyd, J. Marcot | Enterer: | J. Alroy, P. Holroyd, J. Marcot | 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] | |
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] | |
53105 | D. J. Froehlich. 2002. Quo vadis Eohippus? The systematics and taxonomy of the early Eocene equids (Perissodactyla). Zoological Journal of the Linnean Society 134:141-256 [M. Carrano/M. Carrano/M. Carrano] |