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Tanis is a paleontological site in southwestern North Dakota, United States. It is part of the heavily studied Hell Creek Formation, a geological region renowned for many significant fossil discoveries from the Upper Cretaceous and lower Paleocene.
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]
A few taxa were collected at Brownie Butte Montana by Shoemaker, but most plants were collected from North Dakota (Slope County) and from South Dakota. Among the localities, the Mud Buttes, located in Bowman County, North Dakota, is probably the richest megaflora assemblage known and the most diverse leaf quarry from the Hell Creek Formation ...
This list of the prehistoric life of North Dakota contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of North Dakota. Precambrian [ edit ]
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:
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 .
The fossil itself has a somewhat less poetic name: NDGS 10838. It includes a near-complete skull with a bony ridge over the eyes as well as jaws and some skeletal parts, including 11 ribs and 12 ...