Frontier Formation
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| Frontier Formation | |
|---|---|
| Stratigraphic range: Cenomanian-Coniacian | |
| Lua error in package.lua at line 80: module 'Module:InfoboxImage/data' not found. 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] |
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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
- Nodosaurus textilis
- Stegopelta landerensis - "Partial postcranium, osteoderms, [and] fragments of skull."[4]
- Hadrosauroidea indet. Footprints (Upper)[5]
Other paleofauna
See also
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References
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- ^ 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. Template:ISBN.
- ^ "Table 17.1," in Weishampel, et al. (2004). Page 367.
- ^ Page Module:Citation/CS1/styles.css has no content.Panasci, Giulio; Varricchio, David J.; Martin, Anthony (October 10, 2021). "TRACKS OF ORNITHOPODS PUTTING THEIR BEST FEET FORWARD IN THE FRONTIER FORMATION (CONIACIAN), MONTANA". Geological Society of America Abstracts with Programs. 53 (6) – via The Geological Society of America (GSA) Connects 2021.
