Pass Peak Formation
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]
| Pass Peak Formation | |
|---|---|
| Stratigraphic range: Ypresian (Wasatchian) ~ | |
| Type | Formation |
| Location | |
| Coordinates | 42.7°N 110.1°W |
| Approximate paleocoordinates | 47.7°N 93.5°W |
| Region | Wyoming |
| Country | United States |
| Extent | Green River Basin |
Pass Peak Formation (the United States) Pass Peak Formation (Wyoming) | |
Fossil content
The following fossils have been found in the formation:[1][2]
Mammals
- Artiodactyls
- Erinaceomorpha
- Diacodon celatus
- Glires
- Macroscelidea
- Perissodactyla
- Placentalia
Wasatchian correlations
| 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 | ||
| 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 | ||||||||||||
References
- Pass Peak Formation at Fossilworks.org
- 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. .
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