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Prince Creek Formation
The Prince Creek Formation is a geological formation in Alaska with strata from the early Campanian stage of the Upper Cretaceous to the Danian of the Paleocene, between 80 and 60 million years ago. Dinosaur remains are among the fossils that have been recovered from the formation.〔Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, North America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 574-588. ISBN 0-520-24209-2.〕
==Age==
The Prince Creek Formation aged from 80 to 60 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.〔〔 A lower section, the Kogosukruk Tongue, ages from 72 to 71 million years ago, in the latest Campanian.〔 The youngest part of the formation is Ocean Point, which extends into the Paleogene, at the end of the Danian, based on the age of ostracods and mollusks. In the middle of the formation is the Coleville River Bluff, which extends from the Late Campanian to the Middle/Late Maastrichtian, in which pollen spores are common.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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