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Fossils may be found either associated with a geological formation or at a single geographic site. Geological formations consist of rock that was deposited during a specific period of time. They usually extend for large areas, and sometimes there are different important sites in which the same formation is exposed.
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.
The Gabbs Formation is a geologic formation in Nevada.It preserves fossils dating back to the Late Triassic and Early Jurassic periods, and is one of the few formations in the United States known to include the Triassic-Jurassic boundary.
Map of the Hell Creek and Lance Formations in western North America The Hell Creek Formation in Montana overlies the Fox Hills Formation and underlies the Fort Union Formation , and the boundary with the latter occurs near the Cretaceous–Paleogene boundary (K–Pg), which defines the end of the Cretaceous period and has been dated to 66 ± 0. ...
Willalinchina Sandstone Fossil Flora site, near Woomera [2] North America. Canada ... United States. Arizona. Petrified Forest National Park. California. La Brea Tar ...
Tetrapod fossils have been found at it. [2] The site is one of the most abundant sources of trackways of its age. [3] Treptichnus and Arenicolites have been found at the site. [4] The 2016 book Footprints in Stone by Ronald J. Buta and David C. Kopaska-Merkel is about the site and its discovery. [1] In 2012 they wrote a guidebook for the site ...
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Fossil Butte National Monument is a United States National Monument managed by the National Park Service, located 15 miles (24 km) west of Kemmerer, Wyoming, United States. It centers on an assemblage of Eocene Epoch (56 to 34 million years ago) animal and plant fossils associated with Fossil Lake —the smallest lake of the three great lakes ...