Cooper Canyon Formation
| Cooper Canyon Formation | |
|---|---|
| Stratigraphic range: Upper Triassic | |
| Type | Geological formation |
| Unit of | Dockum Group |
| Underlies | Redonda Formation |
| Overlies | Trujillo Formation, possibly Camp Springs Formation and Colorado City Formation |
| Location | |
| Coordinates | 33°07′37″N 101°21′58″W / 33.127°N 101.366°W |
| Region |  Texas  New Mexico |
| Country |  United States |
The Cooper Canyon Formation is a geological formation of Norian age in Texas and New Mexico.[1][2]
Type area of the formation is situated in Garza County, Texas. An equivalent formation in eastern New Mexico is named Bull Canyon Formation. Some researchers argue that the latter name should be abandoned.[2]
The formation consist of reddish siltstone and mudstone with lenses of sandstone and conglomerate. Thickness of the formation in the type area is 161.5 meters. It increases to the south, and in some places exceeds 200 m. The formation contains diverse fossils, including vertebrate remains.[2]
Vertebrate fauna
| Archosaurs of the Cooper Canyon Formation | ||||
|---|---|---|---|---|
| Taxa | Presence | Notes | Images | |
|
Partial skeletons | ||||
|
Two skeletons | ||||
|
Two partial skeletons | ||||
|
Numerous skeletons | ||||
|
Dentary and premaxilla. | ||||
|
Numerous skeletons | ||||
See also
References
- ^ a b Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Triassic, North America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 518–521. ISBN 0-520-24209-2.
- ^ a b c Lehman T., Chatterjee S., Schnable J. (1992). "The Cooper Canyon Formation (Late Triassic) of western Texas". The Texas Journal of Science. 44 (3): 349–355.
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