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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. [2]
The western two-thirds of the state is underlain by an extensive sandstone aquifer, mainly in the Fox Hills Formation and the lower Hell Creek Formation. Although it is close to the surface in the east, it slopes to up to 2000 feet below the ground surface in south-central North Dakota.
The formation stretches over portions of Montana, North Dakota, South Dakota, and Wyoming. [1] In Montana, the Hell Creek Formation overlies the Fox Hills Formation. The site of Pompeys Pillar National Monument is a small isolated section of the Hell Creek Formation.
This article contains a list of fossil-bearing stratigraphic units in the state of North Dakota, U.S ... Deadwood Formation: Ordovician: Fox Hills Formation: ...
The Pierre is overlain by marginal marine deposits of the Fox Hills Formation. ... Colorado, Bowman County, North Dakota and Colfax County, New Mexico. [41] [28] [36]
Acipenser † Adocus Restorative model of the Late Cretaceous mammal Alphadon † Alphadon † Alphadon marshi † Altacreodus † Altacreodus magnus † Amersinia † Amersinia FU082 – informal † Amersinia FU82 – informal † Amesoneuron † Amesoneuron FU037 – informal † Amesoneuron FU37 – informal † Ampelopsis † Ampelopsis acerifolia † Anomia † Anomia gryphorhyncha ...
Jeletzkytes is an extinct genus of scaphatoid ammonite from the Upper Cretaceous (Maastrichtian) of North America named and described by Riccardi, 1983. In overall form Jeletzkytes closely resembles the genus Scaphites. A number of species have been described in the genus including:
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