Small Antarctic Late Cretaceous chorate dinoflagellate cysts: biological and palaeoenvironmental affinities

Autores
Amenabar, Cecilia R.; Candel, Maria Soledad; Guerstein, Gladys Raquel
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Small spiny marine palynomorphs have been the focus of recent palynological studies since their high proportions in Antarctic Late Cretaceous and Cenozoic assemblages were noted. These palynomorphs were assigned to the dinoflagellate cyst Impletosphaeridium clavus and they were believed to have had an affinity with some modern round brown spiny cysts (RBSCs). Our study aims to analyse there together with potential modern analogues by comparing Late Cretaceous and Cenozoic Antarctic specimens with some RBSCs recorded from the Holocene of southern Argentina. We confirm several features in common between these specimens, although differences in processes and the cyst wall are observed. The species could have been produced by dinoflagellates similar to those that generate some RBSCs. Their abundance in the Late Cretaceous may have occurred in response to short term cooling pulses without development of sea-ice cover. Cenozoic records are considered to be reworked, restricting the stratigraphical range of Impletosphaeridium clavus.
Fil: Amenabar, Cecilia R.. Ministerio de Relaciones Exteriores, Comercio Internacional y Culto. Direccion Nacional del Antártico. Instituto Antártico Argentino. Instituto Antártico Argentino - Sede Cricyt (Mendoza); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos; Argentina
Fil: Candel, Maria Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Bahía Blanca. Instituto Geológico del Sur; Argentina
Fil: Guerstein, Gladys Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Bahía Blanca. Instituto Geológico del Sur; Argentina
Materia
Dinoflagellate Cysts
Modern Analogues
Palaeoenvironment
Late Cretaceous-Holocene
Antarctica
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/5512
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Small Antarctic Late Cretaceous chorate dinoflagellate cysts: biological and palaeoenvironmental affinitiesAmenabar, Cecilia R.Candel, Maria SoledadGuerstein, Gladys RaquelDinoflagellate CystsModern AnaloguesPalaeoenvironmentLate Cretaceous-HoloceneAntarcticahttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Small spiny marine palynomorphs have been the focus of recent palynological studies since their high proportions in Antarctic Late Cretaceous and Cenozoic assemblages were noted. These palynomorphs were assigned to the dinoflagellate cyst Impletosphaeridium clavus and they were believed to have had an affinity with some modern round brown spiny cysts (RBSCs). Our study aims to analyse there together with potential modern analogues by comparing Late Cretaceous and Cenozoic Antarctic specimens with some RBSCs recorded from the Holocene of southern Argentina. We confirm several features in common between these specimens, although differences in processes and the cyst wall are observed. The species could have been produced by dinoflagellates similar to those that generate some RBSCs. Their abundance in the Late Cretaceous may have occurred in response to short term cooling pulses without development of sea-ice cover. Cenozoic records are considered to be reworked, restricting the stratigraphical range of Impletosphaeridium clavus.Fil: Amenabar, Cecilia R.. Ministerio de Relaciones Exteriores, Comercio Internacional y Culto. Direccion Nacional del Antártico. Instituto Antártico Argentino. Instituto Antártico Argentino - Sede Cricyt (Mendoza); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos; ArgentinaFil: Candel, Maria Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Bahía Blanca. Instituto Geológico del Sur; ArgentinaFil: Guerstein, Gladys Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Bahía Blanca. Instituto Geológico del Sur; ArgentinaTaylor & Francis2014-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/5512Amenabar, Cecilia R.; Candel, Maria Soledad; Guerstein, Gladys Raquel; Small Antarctic Late Cretaceous chorate dinoflagellate cysts: biological and palaeoenvironmental affinities; Taylor & Francis; Palynology; 38; 2; 9-2014; 303-3230191-6122enginfo:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/abs/10.1080/01916122.2014.907829info:eu-repo/semantics/altIdentifier/doi/10.1080/01916122.2014.907829info:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:27:58Zoai:ri.conicet.gov.ar:11336/5512instacron: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:34982025-10-15 14:27:58.791CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Small Antarctic Late Cretaceous chorate dinoflagellate cysts: biological and palaeoenvironmental affinities
title Small Antarctic Late Cretaceous chorate dinoflagellate cysts: biological and palaeoenvironmental affinities
spellingShingle Small Antarctic Late Cretaceous chorate dinoflagellate cysts: biological and palaeoenvironmental affinities
Amenabar, Cecilia R.
Dinoflagellate Cysts
Modern Analogues
Palaeoenvironment
Late Cretaceous-Holocene
Antarctica
title_short Small Antarctic Late Cretaceous chorate dinoflagellate cysts: biological and palaeoenvironmental affinities
title_full Small Antarctic Late Cretaceous chorate dinoflagellate cysts: biological and palaeoenvironmental affinities
title_fullStr Small Antarctic Late Cretaceous chorate dinoflagellate cysts: biological and palaeoenvironmental affinities
title_full_unstemmed Small Antarctic Late Cretaceous chorate dinoflagellate cysts: biological and palaeoenvironmental affinities
title_sort Small Antarctic Late Cretaceous chorate dinoflagellate cysts: biological and palaeoenvironmental affinities
dc.creator.none.fl_str_mv Amenabar, Cecilia R.
Candel, Maria Soledad
Guerstein, Gladys Raquel
author Amenabar, Cecilia R.
author_facet Amenabar, Cecilia R.
Candel, Maria Soledad
Guerstein, Gladys Raquel
author_role author
author2 Candel, Maria Soledad
Guerstein, Gladys Raquel
author2_role author
author
dc.subject.none.fl_str_mv Dinoflagellate Cysts
Modern Analogues
Palaeoenvironment
Late Cretaceous-Holocene
Antarctica
topic Dinoflagellate Cysts
Modern Analogues
Palaeoenvironment
Late Cretaceous-Holocene
Antarctica
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Small spiny marine palynomorphs have been the focus of recent palynological studies since their high proportions in Antarctic Late Cretaceous and Cenozoic assemblages were noted. These palynomorphs were assigned to the dinoflagellate cyst Impletosphaeridium clavus and they were believed to have had an affinity with some modern round brown spiny cysts (RBSCs). Our study aims to analyse there together with potential modern analogues by comparing Late Cretaceous and Cenozoic Antarctic specimens with some RBSCs recorded from the Holocene of southern Argentina. We confirm several features in common between these specimens, although differences in processes and the cyst wall are observed. The species could have been produced by dinoflagellates similar to those that generate some RBSCs. Their abundance in the Late Cretaceous may have occurred in response to short term cooling pulses without development of sea-ice cover. Cenozoic records are considered to be reworked, restricting the stratigraphical range of Impletosphaeridium clavus.
Fil: Amenabar, Cecilia R.. Ministerio de Relaciones Exteriores, Comercio Internacional y Culto. Direccion Nacional del Antártico. Instituto Antártico Argentino. Instituto Antártico Argentino - Sede Cricyt (Mendoza); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos; Argentina
Fil: Candel, Maria Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Bahía Blanca. Instituto Geológico del Sur; Argentina
Fil: Guerstein, Gladys Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Bahía Blanca. Instituto Geológico del Sur; Argentina
description Small spiny marine palynomorphs have been the focus of recent palynological studies since their high proportions in Antarctic Late Cretaceous and Cenozoic assemblages were noted. These palynomorphs were assigned to the dinoflagellate cyst Impletosphaeridium clavus and they were believed to have had an affinity with some modern round brown spiny cysts (RBSCs). Our study aims to analyse there together with potential modern analogues by comparing Late Cretaceous and Cenozoic Antarctic specimens with some RBSCs recorded from the Holocene of southern Argentina. We confirm several features in common between these specimens, although differences in processes and the cyst wall are observed. The species could have been produced by dinoflagellates similar to those that generate some RBSCs. Their abundance in the Late Cretaceous may have occurred in response to short term cooling pulses without development of sea-ice cover. Cenozoic records are considered to be reworked, restricting the stratigraphical range of Impletosphaeridium clavus.
publishDate 2014
dc.date.none.fl_str_mv 2014-09
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/11336/5512
Amenabar, Cecilia R.; Candel, Maria Soledad; Guerstein, Gladys Raquel; Small Antarctic Late Cretaceous chorate dinoflagellate cysts: biological and palaeoenvironmental affinities; Taylor & Francis; Palynology; 38; 2; 9-2014; 303-323
0191-6122
url http://hdl.handle.net/11336/5512
identifier_str_mv Amenabar, Cecilia R.; Candel, Maria Soledad; Guerstein, Gladys Raquel; Small Antarctic Late Cretaceous chorate dinoflagellate cysts: biological and palaeoenvironmental affinities; Taylor & Francis; Palynology; 38; 2; 9-2014; 303-323
0191-6122
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/abs/10.1080/01916122.2014.907829
info:eu-repo/semantics/altIdentifier/doi/10.1080/01916122.2014.907829
info:eu-repo/semantics/altIdentifier/doi/
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
dc.publisher.none.fl_str_mv Taylor & Francis
publisher.none.fl_str_mv Taylor & Francis
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846082740116520960
score 13.22299

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