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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.
The first fossils of Arctodus simus were found in the Potter Creek Cave, Shasta County, California, by J. A. Richardson in 1878, and were initially described as Arctotherium simum by Edward Drinker Cope in 1879. [4] [5] [6] Historically, all specimens were grouped together under A. pristinus, until a revision by Björn Kurtén in 1967. [7]
The fossil skeleton of a newly discovered dinosaur species was found in a position suggesting it slept like modern birds. Dinosaur from newfound species died in a pose that sheds light on ...
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 ...
This specimen was the first occurrence of a hadrosaur in south-central Alaska, one out of only four vertebrate fossils from the entire Wrangellia Composite Terrane, and the first associated skeleton of an individual dinosaur in Alaska. [73] Mama Dry [54] CM 3392 Carnegie Museum of Natural History: Dryosaurus elderae: Late Jurassic: Morrison ...
Abadehella † Acanthocladia † Acanthopecten † Acanthopecten carbonifer – or unidentified related form † Acanthopecten delawarensis – or unidentified related form † Acanthophyllum Fossil of the Silurian-Middle Devonian trilobite Acanthopyge † Acanthopyge † Acervularia † Aclisina – tentative report † Acmarhachis † Acmarhachis acutus † Acrosaccus † Acrosaccus shuleri ...