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2. Fox Hills Formation - Wikipedia

   en.wikipedia.org/wiki/Fox_Hills_Formation

   The Fox Hills Formation is a Cretaceous geologic formation in the northwestern Great Plains of North America. It is present from Alberta on the north to Colorado in the south. Fossil remains of dinosaurs , including tyrannosaurs , as well as large marine reptiles, such as mosasaurs , have been recovered from the formation.

3. Prehistory of Colorado - Wikipedia

   en.wikipedia.org/wiki/Prehistory_of_Colorado

   The White River Formation is found in the Northeastern corner of the Colorado, and was deposited between ~37.2 and ~30.8 Ma, encompassing parts of the late Eocene and early Oligocene. The formation is composed primarily of claystones , mudstones , and siltstones , within which a variety of fossil organisms, collectively referred to as the White ...

4. Colorado Group - Wikipedia

   en.wikipedia.org/wiki/Colorado_Group

   The USGS convention has been to use Colorado Group where the rocks are further divided into formations, Colorado Formation where no beds are developed enough to be mapped as formations, and Colorado Shale where the unit is composed of little more than shale with no distinctive structures (such as in north-central Montana).

5. Dome home for sale in Colorado is so cool that even Zillow ...

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6. Pierre Shale - Wikipedia

   en.wikipedia.org/wiki/Pierre_Shale

   The Pierre is overlain by marginal marine deposits of the Fox Hills Formation. Most of the formation was deposited in the Campanian Age of the late Cretaceous. However, the discovery of fossils of Baculites baculus in the uppermost beds of the Pierre Shale in the Raton, New Mexico area show that deposition continued here into the early ...

7. List of fossiliferous stratigraphic units in Colorado

   en.wikipedia.org/wiki/List_of_fossiliferous_str...

   This page was last edited on 18 November 2024, at 07:48 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.