Nothofagus and the associated palynoflora from the Late Cretaceous of Vega Island, Antarctic Peninsula
Nothofagaceae fossil leaves and an associated palynoflora from Late Cretaceous sediments of Vega Island, eastern Antarctic Peninsula, are presented. The leaves are described as Nothofagus sp. 1 and Morphotype LDB 1, and come from the Snow Hill Island (late Campanian-early Maastrichtian) and the Lópe...
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ftconicet:oai:ri.conicet.gov.ar:11336/108549 2023-10-09T21:47:08+02:00 Nothofagus and the associated palynoflora from the Late Cretaceous of Vega Island, Antarctic Peninsula Romero, Edgardo Juan Rodriguez Amenabar, Cecilia Zamaloa, María C. Concheyro, Graciela application/pdf http://hdl.handle.net/11336/108549 eng eng Polish Academy of Sciences. Committee on Polar Research info:eu-repo/semantics/altIdentifier/doi/10.24425/ppr.2019.129672 info:eu-repo/semantics/altIdentifier/url/http://journals.pan.pl/dlibra/publication/129672/edition/113183/content http://hdl.handle.net/11336/108549 Romero, Edgardo Juan; Rodriguez Amenabar, Cecilia; Zamaloa, María C.; Concheyro, Graciela; Nothofagus and the associated palynoflora from the Late Cretaceous of Vega Island, Antarctic Peninsula; Polish Academy of Sciences. Committee on Polar Research; Polish Polar Research; 40; 3; 9-2019; 227-253 0138-0338 CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ NOTHOFAGUS CRETÁCICO ISLA VEGA ANTARCTICA https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.24425/ppr.2019.129672 2023-09-24T18:56:18Z Nothofagaceae fossil leaves and an associated palynoflora from Late Cretaceous sediments of Vega Island, eastern Antarctic Peninsula, are presented. The leaves are described as Nothofagus sp. 1 and Morphotype LDB 1, and come from the Snow Hill Island (late Campanian-early Maastrichtian) and the López de Bertodano (late Maastrichtian) formations, respectively. The palynoflora obtained from levels immediately above and below the Nothofagus sp. 1 and in the same horizon as the Morphotype LDB 1, included terrestrial and marine elements. In the palynoflora associated with Nothofagus sp. 1, conifers are dominant and pollen grains with Nothofagus affinity are represented by four species: Nothofagidites kaitangataensis (Te Punga) Romero 1973 and Nothofagidites senectus Dettmann and Playford 1968 which belong to the ancestral pollen type, as well as Nothofagidites dorotensis Romero 1973 and Nothofagidites sp. of the brassii-type. Cryptogamic spores, marine dinoflagellate cysts and algae, among others, are part of the assemblage. The palynoflora associated with the Morphotype LDB 1 also contains abundant conifer and angiosperm pollen grains with N. dorotensis as the only Nothofagus species recorded. Marine dinoflagellate cysts are scarce while fungi and phytodebris are common elements. The joint presence of marine and non-marine palynomorphs supports a probable nearshore environment at time of deposition for both units. Pollen and spore evidence suggests a mixed conifer and angiosperm forest, with Podocarpaceae and Nothofagus as the main components, and fern, lycopods, and mosses in the understory. This forest developed under temperate and moist conditions during the middle Campanian-Maastrichtian. Fil: Romero, Edgardo Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina Fil: Rodriguez Amenabar, Cecilia. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Polar Research Snow Hill Island Vega Island CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic Antarctic Peninsula Argentino Argentina Rodriguez ENVELOPE(-56.720,-56.720,-63.529,-63.529) Romero ENVELOPE(-57.350,-57.350,-63.283,-63.283) Vega Island ENVELOPE(-57.500,-57.500,-63.833,-63.833) Hill Island ENVELOPE(76.070,76.070,-69.395,-69.395) Snow Hill Island ENVELOPE(-57.183,-57.183,-64.466,-64.466) Edgardo ENVELOPE(-64.517,-64.517,-64.833,-64.833) isla Vega ENVELOPE(-57.500,-57.500,-63.833,-63.833) Snow Hill ENVELOPE(-57.183,-57.183,-64.466,-64.466) |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
NOTHOFAGUS CRETÁCICO ISLA VEGA ANTARCTICA https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
NOTHOFAGUS CRETÁCICO ISLA VEGA ANTARCTICA https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Romero, Edgardo Juan Rodriguez Amenabar, Cecilia Zamaloa, María C. Concheyro, Graciela Nothofagus and the associated palynoflora from the Late Cretaceous of Vega Island, Antarctic Peninsula |
topic_facet |
NOTHOFAGUS CRETÁCICO ISLA VEGA ANTARCTICA https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
Nothofagaceae fossil leaves and an associated palynoflora from Late Cretaceous sediments of Vega Island, eastern Antarctic Peninsula, are presented. The leaves are described as Nothofagus sp. 1 and Morphotype LDB 1, and come from the Snow Hill Island (late Campanian-early Maastrichtian) and the López de Bertodano (late Maastrichtian) formations, respectively. The palynoflora obtained from levels immediately above and below the Nothofagus sp. 1 and in the same horizon as the Morphotype LDB 1, included terrestrial and marine elements. In the palynoflora associated with Nothofagus sp. 1, conifers are dominant and pollen grains with Nothofagus affinity are represented by four species: Nothofagidites kaitangataensis (Te Punga) Romero 1973 and Nothofagidites senectus Dettmann and Playford 1968 which belong to the ancestral pollen type, as well as Nothofagidites dorotensis Romero 1973 and Nothofagidites sp. of the brassii-type. Cryptogamic spores, marine dinoflagellate cysts and algae, among others, are part of the assemblage. The palynoflora associated with the Morphotype LDB 1 also contains abundant conifer and angiosperm pollen grains with N. dorotensis as the only Nothofagus species recorded. Marine dinoflagellate cysts are scarce while fungi and phytodebris are common elements. The joint presence of marine and non-marine palynomorphs supports a probable nearshore environment at time of deposition for both units. Pollen and spore evidence suggests a mixed conifer and angiosperm forest, with Podocarpaceae and Nothofagus as the main components, and fern, lycopods, and mosses in the understory. This forest developed under temperate and moist conditions during the middle Campanian-Maastrichtian. Fil: Romero, Edgardo Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina Fil: Rodriguez Amenabar, Cecilia. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. ... |
format |
Article in Journal/Newspaper |
author |
Romero, Edgardo Juan Rodriguez Amenabar, Cecilia Zamaloa, María C. Concheyro, Graciela |
author_facet |
Romero, Edgardo Juan Rodriguez Amenabar, Cecilia Zamaloa, María C. Concheyro, Graciela |
author_sort |
Romero, Edgardo Juan |
title |
Nothofagus and the associated palynoflora from the Late Cretaceous of Vega Island, Antarctic Peninsula |
title_short |
Nothofagus and the associated palynoflora from the Late Cretaceous of Vega Island, Antarctic Peninsula |
title_full |
Nothofagus and the associated palynoflora from the Late Cretaceous of Vega Island, Antarctic Peninsula |
title_fullStr |
Nothofagus and the associated palynoflora from the Late Cretaceous of Vega Island, Antarctic Peninsula |
title_full_unstemmed |
Nothofagus and the associated palynoflora from the Late Cretaceous of Vega Island, Antarctic Peninsula |
title_sort |
nothofagus and the associated palynoflora from the late cretaceous of vega island, antarctic peninsula |
publisher |
Polish Academy of Sciences. Committee on Polar Research |
url |
http://hdl.handle.net/11336/108549 |
long_lat |
ENVELOPE(-56.720,-56.720,-63.529,-63.529) ENVELOPE(-57.350,-57.350,-63.283,-63.283) ENVELOPE(-57.500,-57.500,-63.833,-63.833) ENVELOPE(76.070,76.070,-69.395,-69.395) ENVELOPE(-57.183,-57.183,-64.466,-64.466) ENVELOPE(-64.517,-64.517,-64.833,-64.833) ENVELOPE(-57.500,-57.500,-63.833,-63.833) ENVELOPE(-57.183,-57.183,-64.466,-64.466) |
geographic |
Antarctic Antarctic Peninsula Argentino Argentina Rodriguez Romero Vega Island Hill Island Snow Hill Island Edgardo isla Vega Snow Hill |
geographic_facet |
Antarctic Antarctic Peninsula Argentino Argentina Rodriguez Romero Vega Island Hill Island Snow Hill Island Edgardo isla Vega Snow Hill |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Polar Research Snow Hill Island Vega Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Polar Research Snow Hill Island Vega Island |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.24425/ppr.2019.129672 info:eu-repo/semantics/altIdentifier/url/http://journals.pan.pl/dlibra/publication/129672/edition/113183/content http://hdl.handle.net/11336/108549 Romero, Edgardo Juan; Rodriguez Amenabar, Cecilia; Zamaloa, María C.; Concheyro, Graciela; Nothofagus and the associated palynoflora from the Late Cretaceous of Vega Island, Antarctic Peninsula; Polish Academy of Sciences. Committee on Polar Research; Polish Polar Research; 40; 3; 9-2019; 227-253 0138-0338 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
op_doi |
https://doi.org/10.24425/ppr.2019.129672 |
_version_ |
1779309936108371968 |