Kootenai Formation
The Kootenai Formation is a Lower Cretaceous geologic formation. The Kootenai was deposited in a foreland basin east of the Sevier thrust belt in western Montana. The lithology consists of a basal conglomerate with overlying non-marine sandstones, shales and lacustrine limestones.[1]
| Kootenai Formation Stratigraphic range: Aptian ~120–112 Ma | |
|---|---|
 An outcrop of the Gastropod Limestone of the Kootenai Formation in western Montana | |
| Type | Geological formation |
| Sub-units | Basal Conglomerate, Lower Clastics, Lower Limestone, Upper Clastics, Gastropod Limestone |
| Underlies | Blackleaf Formation |
| Overlies | Morrison Formation |
| Location | |
| Region | Montana |
| Country |  United States |
Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.[2]
See also
- List of dinosaur-bearing rock formations
References
- Decelles, P. G., Sedimentation in a tectonically partitioned, nonmarine foreland basin: The Lower Cretaceous Kootenai Formation, southwestern Montana, GSA Bulletin, 1997, v. 97 no. 8 p. 911-931
- Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
Bibliography
- Weishampel, David B.; Peter Dodson, and Halszka Osmólska (eds.). 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21. ISBN 0-520-24209-2
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