Frontier Formation
Jump to navigation
Jump to search
| Frontier Formation | |
|---|---|
| Stratigraphic range: Cenomanian-Coniacian | |
| File:Frontier Sandstone (Upper Cretaceous; western Dinosaur National Monument, Utah, USA) 14 (48822462432).jpg Frontier Formation in Utah (Dinosaur National Monument) | |
| Type | Geological formation |
| Sub-units | Torchlight Sandstone Member, Peay Sandstone Member |
| Underlies | Cody Shale |
| Overlies | Mowry Shale, Thermopolis Shale |
| Lithology | |
| Primary | Sandstone |
| Other | Shale |
| Location | |
| Region | North America |
| Country | United States |
| Extent | see text |
| Type section | |
| Named by | W. C. Knight, 1902[1] |
_14_(48822462432).jpg){kind=link}
The Frontier Formation is a sedimentary geological formation whose strata date back to the Late Cretaceous. The formation's extents are: northwest Colorado, southeast Idaho, southern Montana, northern Utah, and western Wyoming. It occurs in many sedimentary basins and uplifted areas.
The formation is described by W.G. Pierce as thick, lenticular, grey sandstone, gray shale, carbonaceous shale, and bentonite.[2]
Dinosaur remains are among the fossils that have been recovered from the formation.[3]
Vertebrate paleofauna
[edit | edit source]- Nodosaurus textilis
- Stegopelta landerensis - "Partial postcranium, osteoderms, [and] fragments of skull."[4]
- Hadrosauroidea indet. Footprints (Upper)[5]
Other paleofauna
[edit | edit source]See also
[edit | edit source]Lua error in mw.title.lua at line 392: bad argument #2 to 'title.new' (unrecognized namespace name 'Portal').
References
[edit | edit source]- ^ W.C. Knight, 1902, Eng. and Min. Jour., v. 73, p. 721
- ^ Pierce, W.G., 1997, Geologic map of the Cody 1 degree x 2 degrees quadrangle, northwestern Wyoming: U.S. Geological Survey, Miscellaneous Geologic Investigations Map I-2500, scale 1:250000.
- ^ Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, North America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 574-588. Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value)..
- ^ "Table 17.1," in Weishampel, et al. (2004). Page 367.
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
