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Mummified specimen found in Alaska of the Pleistocene-Holocene Bison priscus, or steppe bison. This specimen, known as "Blue Babe" after the blue ox of Paul Bunyan folklore, derives its unusual coloration from a chemical reaction between the phosphorus in its skin and iron in the surrounding soil to produce a coating of vivianite.
The team found fossils along the river bank at the base of a bluff that was over 100 meters tall, but could not pinpoint their exact stratigraphic origin on the bluff. [17] In 1997, D. W. Norton and a University of Alaska student named Ron Mancil traced the fossils to the top 3 meters of the bluff. [ 17 ]
The Prince Creek Formation aged from 80 to 61.7 million years ago. The Kikak-Tegoseak Quarry, where almost all of the dinosaur fossil are from, is located near the middle of the formation, and is about 70.6 to 69.1 million years ago.
This list of the Paleozoic life of Alaska contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Alaska and are between 538.8 and 252.17 million years of age.
"We have found evidence of more than 10 different kinds of dinosaurs and seven different kinds of prehistoric birds in Denali (National Park and Preserve) and Aniakchak.
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.
Fossils of nonmarine plants are found in some beds. Fossils of two dinosaurs have been recovered from marine mudstones in the formation. [3] [4] The lower Matanuska Formation (MF) is several hundred meters thick and includes nonmarine and marine sediments. Campanian-Maastrichtian graded sandstone, conglomerate, and mudstone comprise the upper ...
The Cantwell Formation is a geologic formation in Alaska. It preserves fossils dating back to the Cretaceous period , it has also yielded numerous dinosaur tracks at Denali National Park . Contemporary therizinosaurid and hadrosaurid trackways in the formation indicate that the area was once a major point of immigration between Asia and North ...