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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Εκδόθηκε σε:	Proc Natl Acad Sci U S A
Κύριοι συγγραφείς:	Cifelli, Richard L., Kirkland, James I., Weil, Anne, Deino, Alan L., Kowallis, Bart J.
Μορφή:	Artigo
Γλώσσα:	Inglês
Έκδοση:	National Academy of Sciences 1997
Θέματα:	Biological Sciences
Διαθέσιμο Online:	https://ncbi.nlm.nih.govhttps://pmc.ncbi.nlm.nih.gov/articles/PMC23402/ https://ncbi.nlm.nih.govhttps://pubmed.ncbi.nlm.nih.gov/9326579/ https://ncbi.nlm.nih.govhttps://doi.org/10.1073/pnas.94.21.11163
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