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Pass Peak Formation

Coordinates: 42°42′N 110°06′W / 42.7°N 110.1°W / 42.7; -110.1
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Pass Peak Formation
Stratigraphic range: Ypresian (Wasatchian)
~55.8–50 Ma
TypeFormation
Location
Coordinates42°42′N 110°06′W / 42.7°N 110.1°W / 42.7; -110.1
Approximate paleocoordinates47°42′N 93°30′W / 47.7°N 93.5°W / 47.7; -93.5
RegionWyoming
Country United States
ExtentGreen River Basin
Pass Peak Formation is located in the United States
Pass Peak Formation
Pass Peak Formation (the United States)
Pass Peak Formation is located in Wyoming
Pass Peak Formation
Pass Peak Formation (Wyoming)

The Pass Peak Formation is a Wasatchian geologic formation in Wyoming. It preserves fossils dating back to the Ypresian stage of the Eocene period.[1]

Fossil content

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The following fossils have been found in the formation:[1][2]

Mammals

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Artiodactyls
Erinaceomorpha
Glires
Macroscelidea
Perissodactyla
Placentalia

Wasatchian correlations

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Wasatchian correlations in North America
Formation Wasatch DeBeque Claron Indian Meadows Pass Peak Tatman Willwood Golden Valley Coldwater Allenby Kamloops Ootsa Lake Margaret Nanjemoy Hatchetigbee Tetas de Cabra Hannold Hill Coalmont Cuchara Galisteo San Jose Ypresian (IUCS) • Itaboraian (SALMA)
Bumbanian (ALMA) • Mangaorapan (NZ)
Basin Powder River
Uinta
Piceance
Colorado Plateau
Wind River
Green River
Bighorn
Piceance




Colorado Plateau





Wind River





Green River






Bighorn
Williston Okanagan Princeton Buck Creek Nechako Sverdrup Potomac GoM Laguna Salada Rio Grande North Park Raton Galisteo San Juan
Pass Peak Formation is located in North America
Pass Peak Formation
Pass Peak Formation
Pass Peak Formation
Pass Peak Formation
Pass Peak Formation
Pass Peak Formation
Pass Peak Formation
Pass Peak Formation
Pass Peak Formation
Pass Peak Formation
Pass Peak Formation
Pass Peak Formation
Pass Peak Formation
Pass Peak Formation
Pass Peak Formation
Pass Peak Formation
Pass Peak Formation
Pass Peak Formation
Pass Peak Formation
Pass Peak Formation
Pass Peak Formation
Pass Peak Formation (North America)
Country  United States  Canada  United States  Mexico  United States
Copelemur
Coryphodon
Diacodexis
Homogalax
Oxyaena
Paramys
Primates
Birds
Reptiles
Fish
Insects
Flora
Environments Alluvial-fluvio-lacustrine Fluvial Fluvial Fluvio-lacustrine Fluvial Lacustrine Fluvio-lacustrine Deltaic-paludal Shallow marine Fluvial Shallow marine Fluvial Fluvial
Wasatchian volcanoclastics

Wasatchian fauna

Wasatchian flora
Volcanic Yes No Yes No Yes No Yes No Yes No

See also

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References

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  1. ^ a b Pass Peak Formation at Fossilworks.org
  2. ^ Dorr Jr., 1978

Bibliography

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  • Dorr, Jr, J. A (1978), "Revised and Amended Fossil Vertebrate Faunal Lists, Early Tertiary, Hoback Basin, Wyoming", Contributions to Geology, University of Wyoming, 16: 79–84