High-precision (40)Ar/(39)Ar geochronology and the advent of North America’s Late Cretaceous terrestrial fauna

A densely sampled, diverse new fauna from the uppermost Cedar Mountain Formation, Utah, indicates that the basic pattern of faunal composition for the Late Cretaceous of North America was already established by the Albian-Cenomanian boundary. Multiple, concordant (40)Ar/(39)Ar determinations from a...

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Bibliographic Details
Main Authors: Cifelli, Richard L., Kirkland, James I., Weil, Anne, Deino, Alan L., Kowallis, Bart J.
Format: Artigo
Language:Inglês
Published: The National Academy of Sciences of the USA 1997
Subjects:
Biological Sciences
Online Access:https://ncbi.nlm.nih.gov/pmc/articles/PMC23402/
https://ncbi.nlm.nih.gov/pubmed/9326579
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