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The Hell Creek Formation is a well-known and much-studied fossil-bearing formation (geological region) of mostly Upper Cretaceous and some lower Paleocene rock that stretches across portions of Montana, North Dakota, South Dakota, and Wyoming in North America.
The Hell Creek Formation is an intensively studied division of mostly Upper Cretaceous and some lower Paleocene rocks in North America, named for exposures studied along Hell Creek, near Jordan, Montana. The formation stretches over portions of Montana, North Dakota, South Dakota, and Wyoming. [1]
South Dakota [9] Lower to upper Hell Creek Formation [10] 40 specimens [11] A genus of prehistoric sharks in the family Hybodontidae. It makes up 0.4% of the remains of the vertebrates of the Hell Creek Formation. [8] Myledaphus [28] M. pustulosus [28] Montana [28] North Dakota [9] South Dakota [9] Lower to upper Hell Creek Formation. [10]
Three North Dakota boys made the extraordinary discovery of a highly rare Tyrannosaurus rex fossil that could change what we know about dinosaurs. ... which began as an ordinary hike in the Hell ...
Sam Fisher, his sons, Jessin and Liam, then 10 and 7, and their cousin Kaiden Madsen, who was 9, had been amateur fossil hunters for years and knew that the area — the Hell Creek Formation ...
The first scientifically documented fossils in North Dakota were collected during the Lewis and Clark Expedition between 1804 and 1806 as they mapped the course of the Missouri River. The first fossil written about in the state were petrified wood preserved in sandstone concretions discovered at the Cannonball River .
Dakota (specimen NDGS 2000) is the nickname given to an important Edmontosaurus fossil found in the Hell Creek Formation in North Dakota. It is about 67 million years old, [ 1 ] placing it in the Maastrichtian , the last stage of the Cretaceous period .
This article contains a list of fossil-bearing stratigraphic units in the state of North Dakota, U.S. Sites. Group or Formation ... Hell Creek Formation: Cretaceous ...