Earth:Pass Peak Formation

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Short description: Geologic formation in Wyoming, United States
Pass Peak Formation
Stratigraphic range: Ypresian (Wasatchian)
~55.8–50 Ma
TypeFormation
Location
Coordinates [ ⚑ ] : 42°42′N 110°06′W / 42.7°N 110.1°W / 42.7; -110.1
Paleocoordinates [ ⚑ ] 47°42′N 93°30′W / 47.7°N 93.5°W / 47.7; -93.5
RegionWyoming
Country United States
ExtentGreen River Basin
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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

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

Mammals

Artiodactyls
Erinaceomorpha
  • Diacodon celatus
Glires
Macroscelidea
  • Adapisoricidae indet.
Perissodactyla
  • Hyracotherium cf. vasacciense
Placentalia
  • Hyopsodus cf. wortmani

Wasatchian correlations

Wasatchian correlations in North America
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
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Pass Peak Formation (North America)
Country  United States  Canada  United States  Mexico  United States
Copelemur 14px 14px 14px 14px
Coryphodon 14px 14px 14px 14px 14px 14px 14px 14px 14px 14px
Diacodexis 14px 14px 14px 14px 14px 14px 14px
Homogalax 14px 14px 14px 14px 14px 14px 14px
Oxyaena 14px 14px 14px 14px 14px
Paramys 14px 14px 14px 14px 14px 14px 14px 14px 14px
Primates 10px 10px 10px 10px 10px 10px 10px
Birds 10px 10px 10px 10px 10px
Reptiles 10px 10px 10px 10px 10px 10px 10px
Fish 10px 10px 10px 10px 10px 10px 10px
Insects 10px 10px 10px 10px 10px 10px
Flora 10px 10px 10px 10px 10px 10px 10px 10px 10px
Environments Alluvial-fluvio-lacustrine Fluvial Fluvial Fluvio-lacustrine Fluvial Lacustrine Fluvio-lacustrine Deltaic-paludal Shallow marine Fluvial Shallow marine Fluvial Fluvial
Pink ff0080 pog.svg Wasatchian volcanoclastics

8px Wasatchian fauna

Dark Green 004040 pog.svg Wasatchian flora
Volcanic Yes No Yes No Yes No Yes No Yes No

See also

  • List of fossiliferous stratigraphic units in Wyoming
  • Paleontology in Wyoming

References

  1. 1.0 1.1 Pass Peak Formation at Fossilworks.org
  2. Dorr Jr., 1978

Bibliography

  • 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.