INSUGEO   12554
INSTITUTO SUPERIOR DE CORRELACION GEOLOGICA
Unidad Ejecutora - UE
artículos
Título:
Ordovician Conodonts of the Devendeus Formation at the Angosto de La Quesera (Salta Eastern Cordillera): Taxonomic Considerations and Biostratigraphic Significance
Autor/es:
J. CARLOROSI , S. HEREDIA AND G. ACEÑOLAZA
Revista:
Geologica Acta
Editorial:
Facultad de Geologia Universidad de Barcelona ,Institut de Ciéncies de la Terra Jaume Almera" (C.S.I.C.)
Referencias:
Lugar: Barcelona; Año: 2011 vol. 9
ISSN:
1695-6133
Resumen:
The Angosto de La Quesera (Salta Eastern Cordillera) is a typical locality of the Lower Paleozoic geology of northwestern Argentina. Recent field work has provided additional material that was processed for conodonts with positive results. This contribution provides the taxonomic description of Nogamiconus sp., Problematoconites perforatus sp., Drepanoistodus sp., Oneotodus sp., Scolopus filosus sp., Teridontus nakamurai and Variabiloconus sp., as a part of a conodont association that defines a pre-Paltodus deltifer Zone. The material is better delimited as a part of the Cordylodus angulatus and/or the lower sector of the Rossodus manitouensis Zone. Microfossils allow to detail on the dating of the Devendeus Formation as Tremadocian (Lower Ordovician).
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