The Early to Middle Ordovician graptolite faunal succession of the Trail Creek region, central Idaho, U.S.A
Maletz, J. (State University of New York at Buffalo. Department of Geology)
Goldman, D. (University of Dayton. Department of Geological Sciences)
Cone, M. (State University of New York at Buffalo. Department of Geology)
Date: |
2005 |
Abstract: |
The Middle Ordovician graptolite biostratigraphy of the Trail Creek region of Idaho is reviewed and revised. The oldest known fauna belongs to the Didymograptellus bifidus Biozone. The Isograptus victoriae lunatus, I. victoriae maximodivergens, Oncograptus, Undulograptus austrodentatus and Holmograptus lentus Biozones can be differentiated. Pseudophyllograptus archaios (Braithwaite) is found for the first time in the Trail Creek region. This species represents a conspicuous North American mid-continent faunal element and enables the correlation of the endemic P. archaios-C. flexilis Biozone of Utah with the D. bifidus Biozone of the Pacific faunal realm, thus, providing an important tool for the correlation of endemic mid-continent faunas with the pandemic deep water graptolite faunas. |
Rights: |
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Language: |
Anglès |
Document: |
Article ; recerca ; Versió publicada |
Subject: |
North America ;
Ordovician ;
Arenig ;
Graptolites ;
Biostratigraphy |
Published in: |
Geologica acta, Vol. 3, Núm. 4 (2005) , p. 395-409, ISSN 1696-5728 |
Adreça alternativa: https://raco.cat/index.php/GeologicaActa/article/view/82387
Adreça alternativa: https://revistes.ub.edu/index.php/GEOACTA/article/view/105.000001387
DOI: 10.1344/105.000001387
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Record created 2012-01-31, last modified 2024-02-20