New Ludlovian (Silurian) graptolite faunas from Los Espejos Formation, Central Precordillera, San Juan Province, Argentina: correlations and biostratigraphic remarks
- Autores
- López, Fernando Enrique; Conde, Osvaldo Agustin; Braeckman, Alejandro R.; Segura, Diego G.; Drovandi, Juan Martín; Bueno, Andrea J.; Abarca, Ulises
- Año de publicación
- 2024
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Graptolites represent one of the most important index fossils for the lower to middle Paleozoic biostratigraphy worldwide. Compared to other regions, graptolite faunas exhibited a marked decrease in diversity in Argentina during the Silurian, what resulted in reduced and low-varied registers and denied biostratigraphic works in its territory. This study introduces new Silurian graptolite faunas from the Los Espejos Formation, Poblete Norte section, Central Precordillera of Argentina. A total of thirteen graptolitic levels were identified, containing Bohemograptus bohemicus, Lobograptus sp., Saetograptus argentinus argentinus, Saetograptus cf. S. varians, Uncinatograptus uncinatus notouncinatus, Uncinatograptus elsae sp. nov., and Uncinatograptus lisandroi sp. nov. The occurrence of Uncinatograptus spp. in association with B. bohemicus could indicate the presence of the lower Gorstian Neodiversograptus nilssoni Biozone. A few meters above, the finding of S. a. argentinus in association with S. cf. S. varians, U. u. notouncinatus, and Lobograptus sp. suggest the presence of the lower Gorstian Lobograptus progenitor Biozone. The upper graptolitic beds yield specimens of S. a. argentinus and B. bohemicus, suggesting late Gorstian to early Ludfordian ages. These new graptolite faunas allow to correlate more precisely with local (Precordillera and Famatina), regional (North Western Argentina and Bolivia) and global equivalent sections. This discovery introduces new graptolite faunas, first-time recorded in South America, proposes for the first time a graptolite biostratigraphy for the Ludlow of Precordillera, and complements so far insufficient knowledge on Ludlovian graptolitic faunas of the continent in a critical time in the history of this fossil group.
Fil: López, Fernando Enrique. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina
Fil: Conde, Osvaldo Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
Fil: Braeckman, Alejandro R.. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geología; Argentina
Fil: Segura, Diego G.. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geología; Argentina
Fil: Drovandi, Juan Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
Fil: Bueno, Andrea J.. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geología; Argentina
Fil: Abarca, Ulises. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geología; Argentina - Materia
-
Graptolithina
Biostratigraphy
Gorstian Stage
Ludlow Series
Los Espejos Formation
Precordillera
Argentina
South America - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/266512
Ver los metadatos del registro completo
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New Ludlovian (Silurian) graptolite faunas from Los Espejos Formation, Central Precordillera, San Juan Province, Argentina: correlations and biostratigraphic remarksLópez, Fernando EnriqueConde, Osvaldo AgustinBraeckman, Alejandro R.Segura, Diego G.Drovandi, Juan MartínBueno, Andrea J.Abarca, UlisesGraptolithinaBiostratigraphyGorstian StageLudlow SeriesLos Espejos FormationPrecordilleraArgentinaSouth Americahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Graptolites represent one of the most important index fossils for the lower to middle Paleozoic biostratigraphy worldwide. Compared to other regions, graptolite faunas exhibited a marked decrease in diversity in Argentina during the Silurian, what resulted in reduced and low-varied registers and denied biostratigraphic works in its territory. This study introduces new Silurian graptolite faunas from the Los Espejos Formation, Poblete Norte section, Central Precordillera of Argentina. A total of thirteen graptolitic levels were identified, containing Bohemograptus bohemicus, Lobograptus sp., Saetograptus argentinus argentinus, Saetograptus cf. S. varians, Uncinatograptus uncinatus notouncinatus, Uncinatograptus elsae sp. nov., and Uncinatograptus lisandroi sp. nov. The occurrence of Uncinatograptus spp. in association with B. bohemicus could indicate the presence of the lower Gorstian Neodiversograptus nilssoni Biozone. A few meters above, the finding of S. a. argentinus in association with S. cf. S. varians, U. u. notouncinatus, and Lobograptus sp. suggest the presence of the lower Gorstian Lobograptus progenitor Biozone. The upper graptolitic beds yield specimens of S. a. argentinus and B. bohemicus, suggesting late Gorstian to early Ludfordian ages. These new graptolite faunas allow to correlate more precisely with local (Precordillera and Famatina), regional (North Western Argentina and Bolivia) and global equivalent sections. This discovery introduces new graptolite faunas, first-time recorded in South America, proposes for the first time a graptolite biostratigraphy for the Ludlow of Precordillera, and complements so far insufficient knowledge on Ludlovian graptolitic faunas of the continent in a critical time in the history of this fossil group.Fil: López, Fernando Enrique. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; ArgentinaFil: Conde, Osvaldo Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; ArgentinaFil: Braeckman, Alejandro R.. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geología; ArgentinaFil: Segura, Diego G.. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geología; ArgentinaFil: Drovandi, Juan Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; ArgentinaFil: Bueno, Andrea J.. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geología; ArgentinaFil: Abarca, Ulises. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geología; ArgentinaPolish Academy of Sciences. Institute of Paleobiology2024-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/266512López, Fernando Enrique; Conde, Osvaldo Agustin; Braeckman, Alejandro R.; Segura, Diego G.; Drovandi, Juan Martín; et al.; New Ludlovian (Silurian) graptolite faunas from Los Espejos Formation, Central Precordillera, San Juan Province, Argentina: correlations and biostratigraphic remarks; Polish Academy of Sciences. Institute of Paleobiology; Acta Palaeontologica Polonica; 69; 9-2024; 351-3700567-79201732-2421CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.app.pan.pl/article/item/app011392024.htmlinfo:eu-repo/semantics/altIdentifier/doi/10.4202/app.01139.2024info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:06:12Zoai:ri.conicet.gov.ar:11336/266512instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:06:12.37CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
New Ludlovian (Silurian) graptolite faunas from Los Espejos Formation, Central Precordillera, San Juan Province, Argentina: correlations and biostratigraphic remarks |
title |
New Ludlovian (Silurian) graptolite faunas from Los Espejos Formation, Central Precordillera, San Juan Province, Argentina: correlations and biostratigraphic remarks |
spellingShingle |
New Ludlovian (Silurian) graptolite faunas from Los Espejos Formation, Central Precordillera, San Juan Province, Argentina: correlations and biostratigraphic remarks López, Fernando Enrique Graptolithina Biostratigraphy Gorstian Stage Ludlow Series Los Espejos Formation Precordillera Argentina South America |
title_short |
New Ludlovian (Silurian) graptolite faunas from Los Espejos Formation, Central Precordillera, San Juan Province, Argentina: correlations and biostratigraphic remarks |
title_full |
New Ludlovian (Silurian) graptolite faunas from Los Espejos Formation, Central Precordillera, San Juan Province, Argentina: correlations and biostratigraphic remarks |
title_fullStr |
New Ludlovian (Silurian) graptolite faunas from Los Espejos Formation, Central Precordillera, San Juan Province, Argentina: correlations and biostratigraphic remarks |
title_full_unstemmed |
New Ludlovian (Silurian) graptolite faunas from Los Espejos Formation, Central Precordillera, San Juan Province, Argentina: correlations and biostratigraphic remarks |
title_sort |
New Ludlovian (Silurian) graptolite faunas from Los Espejos Formation, Central Precordillera, San Juan Province, Argentina: correlations and biostratigraphic remarks |
dc.creator.none.fl_str_mv |
López, Fernando Enrique Conde, Osvaldo Agustin Braeckman, Alejandro R. Segura, Diego G. Drovandi, Juan Martín Bueno, Andrea J. Abarca, Ulises |
author |
López, Fernando Enrique |
author_facet |
López, Fernando Enrique Conde, Osvaldo Agustin Braeckman, Alejandro R. Segura, Diego G. Drovandi, Juan Martín Bueno, Andrea J. Abarca, Ulises |
author_role |
author |
author2 |
Conde, Osvaldo Agustin Braeckman, Alejandro R. Segura, Diego G. Drovandi, Juan Martín Bueno, Andrea J. Abarca, Ulises |
author2_role |
author author author author author author |
dc.subject.none.fl_str_mv |
Graptolithina Biostratigraphy Gorstian Stage Ludlow Series Los Espejos Formation Precordillera Argentina South America |
topic |
Graptolithina Biostratigraphy Gorstian Stage Ludlow Series Los Espejos Formation Precordillera Argentina South America |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Graptolites represent one of the most important index fossils for the lower to middle Paleozoic biostratigraphy worldwide. Compared to other regions, graptolite faunas exhibited a marked decrease in diversity in Argentina during the Silurian, what resulted in reduced and low-varied registers and denied biostratigraphic works in its territory. This study introduces new Silurian graptolite faunas from the Los Espejos Formation, Poblete Norte section, Central Precordillera of Argentina. A total of thirteen graptolitic levels were identified, containing Bohemograptus bohemicus, Lobograptus sp., Saetograptus argentinus argentinus, Saetograptus cf. S. varians, Uncinatograptus uncinatus notouncinatus, Uncinatograptus elsae sp. nov., and Uncinatograptus lisandroi sp. nov. The occurrence of Uncinatograptus spp. in association with B. bohemicus could indicate the presence of the lower Gorstian Neodiversograptus nilssoni Biozone. A few meters above, the finding of S. a. argentinus in association with S. cf. S. varians, U. u. notouncinatus, and Lobograptus sp. suggest the presence of the lower Gorstian Lobograptus progenitor Biozone. The upper graptolitic beds yield specimens of S. a. argentinus and B. bohemicus, suggesting late Gorstian to early Ludfordian ages. These new graptolite faunas allow to correlate more precisely with local (Precordillera and Famatina), regional (North Western Argentina and Bolivia) and global equivalent sections. This discovery introduces new graptolite faunas, first-time recorded in South America, proposes for the first time a graptolite biostratigraphy for the Ludlow of Precordillera, and complements so far insufficient knowledge on Ludlovian graptolitic faunas of the continent in a critical time in the history of this fossil group. Fil: López, Fernando Enrique. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan; Argentina Fil: Conde, Osvaldo Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina Fil: Braeckman, Alejandro R.. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geología; Argentina Fil: Segura, Diego G.. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geología; Argentina Fil: Drovandi, Juan Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina Fil: Bueno, Andrea J.. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geología; Argentina Fil: Abarca, Ulises. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geología; Argentina |
description |
Graptolites represent one of the most important index fossils for the lower to middle Paleozoic biostratigraphy worldwide. Compared to other regions, graptolite faunas exhibited a marked decrease in diversity in Argentina during the Silurian, what resulted in reduced and low-varied registers and denied biostratigraphic works in its territory. This study introduces new Silurian graptolite faunas from the Los Espejos Formation, Poblete Norte section, Central Precordillera of Argentina. A total of thirteen graptolitic levels were identified, containing Bohemograptus bohemicus, Lobograptus sp., Saetograptus argentinus argentinus, Saetograptus cf. S. varians, Uncinatograptus uncinatus notouncinatus, Uncinatograptus elsae sp. nov., and Uncinatograptus lisandroi sp. nov. The occurrence of Uncinatograptus spp. in association with B. bohemicus could indicate the presence of the lower Gorstian Neodiversograptus nilssoni Biozone. A few meters above, the finding of S. a. argentinus in association with S. cf. S. varians, U. u. notouncinatus, and Lobograptus sp. suggest the presence of the lower Gorstian Lobograptus progenitor Biozone. The upper graptolitic beds yield specimens of S. a. argentinus and B. bohemicus, suggesting late Gorstian to early Ludfordian ages. These new graptolite faunas allow to correlate more precisely with local (Precordillera and Famatina), regional (North Western Argentina and Bolivia) and global equivalent sections. This discovery introduces new graptolite faunas, first-time recorded in South America, proposes for the first time a graptolite biostratigraphy for the Ludlow of Precordillera, and complements so far insufficient knowledge on Ludlovian graptolitic faunas of the continent in a critical time in the history of this fossil group. |
publishDate |
2024 |
dc.date.none.fl_str_mv |
2024-09 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/266512 López, Fernando Enrique; Conde, Osvaldo Agustin; Braeckman, Alejandro R.; Segura, Diego G.; Drovandi, Juan Martín; et al.; New Ludlovian (Silurian) graptolite faunas from Los Espejos Formation, Central Precordillera, San Juan Province, Argentina: correlations and biostratigraphic remarks; Polish Academy of Sciences. Institute of Paleobiology; Acta Palaeontologica Polonica; 69; 9-2024; 351-370 0567-7920 1732-2421 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/266512 |
identifier_str_mv |
López, Fernando Enrique; Conde, Osvaldo Agustin; Braeckman, Alejandro R.; Segura, Diego G.; Drovandi, Juan Martín; et al.; New Ludlovian (Silurian) graptolite faunas from Los Espejos Formation, Central Precordillera, San Juan Province, Argentina: correlations and biostratigraphic remarks; Polish Academy of Sciences. Institute of Paleobiology; Acta Palaeontologica Polonica; 69; 9-2024; 351-370 0567-7920 1732-2421 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://www.app.pan.pl/article/item/app011392024.html info:eu-repo/semantics/altIdentifier/doi/10.4202/app.01139.2024 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Polish Academy of Sciences. Institute of Paleobiology |
publisher.none.fl_str_mv |
Polish Academy of Sciences. Institute of Paleobiology |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844613907623182336 |
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13.070432 |