The Nicely Formation is a geologic formation in the Crook, Grant, and Harney Counties in Oregon. It preserves radiolaria and ichthyosaur fossils dating back to the Pliensbachian stage of the Early Jurassic period.[1]
| Nicely Formation | |
|---|---|
| Stratigraphic range: late Pliensbachian ~ | |
| Type | Formation |
| Lithology | |
| Primary | Mudstone, limestone |
| Other | Shale, siltstone |
| Location | |
| Coordinates | 44°06′N 119°24′W / 44.1°N 119.4°W |
| Approximate paleocoordinates | 28°24′N 56°06′W / 28.4°N 56.1°W |
| Region | Crook, Grant & Harney Counties, Oregon |
| Country |  United States |
| Extent | Snake River Basin |
  Nicely Formation (the United States)  Nicely Formation (Oregon) | |
Fossil content
editAmong others, the following fossils have been reported from the formation:[1]
See also
editReferences
edit- ^ a b Nicely Formation at Fossilworks.org
- ^ Orr & Katsura, 1985
Bibliography
edit- Orr, W. N.; Katsura, K. T. (1985), "Oregon's oldest vertebrates [Ichthyosauria(Reptilia)]", Oregon Geology, 47: 75–77
- K. Y. Yeh. 1987. Taxonomic Studies of Lower Jurassic Radiolaria from East-Central Oregon. National Museum of Natural Science Special Publications 2:1-169
- E. A. Pessagno Jr. and P.A. Whalen. 1982. Lower and Middle Jurassic Radiolaria (multicyrtid Nassellariina) from California, east-central Oregon and the Queen Charlotte Islands, B.C. Micropaleontology 28(2):111-169