Earth:Chalk Butte Formation
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| Chalk Butte Formation Stratigraphic range: Tortonian-Zanclean (Hemphillian) ~10.3–4.9 Ma | |
|---|---|
| Type | Formation |
| Location | |
| Coordinates | [ ⚑ ] : 43°36′N 117°30′W / 43.6°N 117.5°W |
| Paleocoordinates | [ ⚑ ] 44°18′N 114°36′W / 44.3°N 114.6°W |
| Region | Malheur County, Oregon |
| Country |  United States |
| Type section | |
| Named for | Chalk Butte |
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The Chalk Butte Formation is a geologic formation in Oregon. It preserves fossils dating back to the Neogene period.[1][2][3]
Fossil content
The following fossils have been reported from the formation:[1][4]
- Antecalomys valensis
- Basirepomys pliocenicus
- Copemys cf. esmeraldensis
- Cupidinimus magnus
- Diprionomys parvus
- Dipoides vallicula
- Eucyon davisi
- Goniodontomys disjunctus
- Hypolagus vetus
- Peromyscus antiquus
- Pliohippus spectans
- Plionictis oregonensis
- Scapanus proceridens
- Dipoides sp.
- Spermophilus sp.
- Camelidae indet.
- Perognathinae indet.
- Soricidae indet.
- ?Vespertilionidae indet.
See also
- List of fossiliferous stratigraphic units in Oregon
- Paleontology in Oregon
References
- ↑ 1.0 1.1 Chalk Butte Formation at Fossilworks.org
- ↑ Chalk Butte Formation at USGS
- ↑ Chalk Butte Formation publications at USGS
- ↑ Shotwell, 1970
Bibliography
- Shotwell, J. A. 1970. Pliocene mammals of southeast Oregon and adjacent Idaho. Bulletin of the Museum of Natural History, University of Oregon 17. 1–103.
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