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dc.contributor.author
Alfaro, Marta Beatriz
dc.contributor.author
Uriz, Norberto Javier
dc.contributor.author
Cingolani, Carlos Alberto
dc.contributor.author
Tortello, Marcelo Franco
dc.contributor.author
Bidone, Andrea Rosa
dc.contributor.author
Galeano Inchausti, Julio César
dc.date.available
2017-09-08T19:38:24Z
dc.date.issued
2013-04
dc.identifier.citation
Alfaro, Marta Beatriz; Uriz, Norberto Javier; Cingolani, Carlos Alberto; Tortello, Marcelo Franco; Bidone, Andrea Rosa; et al.; Graptolites and trilobites from the Eusebio Ayala Formation (Hirnantian?–early Llandovery), Paraná Basin, eastern Paraguay; John Wiley & Sons Ltd; Geological Journal (chichester); 48; 4-2013; 236-247
dc.identifier.issn
0072-1050
dc.identifier.uri
http://hdl.handle.net/11336/23870
dc.description.abstract
A low-diversity graptolite fauna from the upper part of the Eusebio Ayala Formation exposed in the intracratonic Paraná Basin of eastern Paraguay is reported herein. The sections studied are composed dominantly of red micaceous mudstones with intercalations of purple sandstones from a series of clay quarries (Santa Elena; Galeano; Western Itauguá) around Itauguá city. The graptolites Metaclimacograptus sp., Normalograptus cf. ajjeri (Legrand), and Normalograptus cf. medius (Törnquist) indicate an early Llandovery age for the upper Eusebio Ayala unit. Compared to coeval, postglacial successions in southwestern Gondwana, the graptolites studied have their closest affinities with those from the Rhuddanian lower Lipeón (Subandean Ranges, northwestern Argentina) and La Chilca (Precordillera) formations. In addition, a trilobite assemblage dominated by the genus Mucronaspis was collected from the Eusebio Ayala Formation type locality near Eusebio Ayala city. The latter represents an isolated small outcrop which seems to be latest Ordovician (Hirnantian) in age.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
John Wiley & Sons Ltd
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Graptolites
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Trilobites
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Eusebio Ayala Formation
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Hirnantian?-Llandovery
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Paraguay
dc.subject.classification
Oceanografía, Hidrología, Recursos Hídricos
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Graptolites and trilobites from the Eusebio Ayala Formation (Hirnantian?–early Llandovery), Paraná Basin, eastern Paraguay
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-08-17T17:42:02Z
dc.journal.volume
48
dc.journal.pagination
236-247
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Alfaro, Marta Beatriz. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
dc.description.fil
Fil: Uriz, Norberto Javier. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
dc.description.fil
Fil: Cingolani, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
dc.description.fil
Fil: Tortello, Marcelo Franco. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleozoología Invertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Bidone, Andrea Rosa. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
dc.description.fil
Fil: Galeano Inchausti, Julio César. Ministerio de Obras Públicas y Comunicaciones de Paraguay; Paraguay
dc.journal.title
Geological Journal (chichester)
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/gj.2448
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/gj.2448/abstract
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