Frontier Formation
Geological formation in the United States
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.
Dinosaur remains are among the fossils that have been recovered from the formation.
01Vertebrate paleofauna
- Nodosaurus textilis
- Stegopelta landerensis - "Partial postcranium, osteoderms, [and] fragments of skull."
- Hadrosauroidea indet. Footprints (Upper)
02Other paleofauna
Sources and credits
This article is adapted from the Wikipedia article “Frontier Formation”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- Frontier Sandstone (Upper Cretaceous; western Dinosaur National Monument, Utah, USA) 14 (48822462432).jpg by James St. John, CC BY 2.0
- Frontier Fm.jpg by Carpenter, Kenneth, CC BY-SA 4.0
Fathomly is not affiliated with or endorsed by the Wikimedia Foundation. Spotted a problem? Tell us.