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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Polish Academy of Sciences
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ftdoajarticles:oai:doaj.org/article:be30b26efd6749ad800c1238fc97b2aa 2023-05-15T13:47:14+02:00 Nothofagus and the associated palynoflora from the Late Cretaceous of Vega Island, Antarctic Peninsula Edgardo Romero Cecilia R. Amenábar María C. Zamaloa Andrea Concheyro 2019-09-01T00:00:00Z https://doi.org/10.24425/ppr.2019.129672 https://doaj.org/article/be30b26efd6749ad800c1238fc97b2aa EN eng Polish Academy of Sciences https://journals.pan.pl/Content/113183/PDF/PPR%203-19%203-E.Romero.pdf https://doaj.org/toc/0138-0338 https://doaj.org/toc/2081-8262 0138-0338 2081-8262 https://doi.org/10.24425/ppr.2019.129672 https://doaj.org/article/be30b26efd6749ad800c1238fc97b2aa Polish Polar Research, Vol vol. 40, Iss No 3, Pp 227-253 (2019) antarctica vega island cretaceous nothofagaceae leaves palynology Geology QE1-996.5 article 2019 ftdoajarticles https://doi.org/10.24425/ppr.2019.129672 2022-12-30T22:45:26Z 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 ferns, lycopods, and mosses in the understory. This forest developed under temperate and moist conditions during the middle Campanian-Maastrichtian. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Polar Research Snow Hill Island Vega Island Directory of Open Access Journals: DOAJ Articles Antarctic Antarctic Peninsula 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) Snow Hill ENVELOPE(-57.183,-57.183,-64.466,-64.466) |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
antarctica vega island cretaceous nothofagaceae leaves palynology Geology QE1-996.5 |
spellingShingle |
antarctica vega island cretaceous nothofagaceae leaves palynology Geology QE1-996.5 Edgardo Romero Cecilia R. Amenábar María C. Zamaloa Andrea Concheyro Nothofagus and the associated palynoflora from the Late Cretaceous of Vega Island, Antarctic Peninsula |
topic_facet |
antarctica vega island cretaceous nothofagaceae leaves palynology Geology QE1-996.5 |
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 ferns, lycopods, and mosses in the understory. This forest developed under temperate and moist conditions during the middle Campanian-Maastrichtian. |
format |
Article in Journal/Newspaper |
author |
Edgardo Romero Cecilia R. Amenábar María C. Zamaloa Andrea Concheyro |
author_facet |
Edgardo Romero Cecilia R. Amenábar María C. Zamaloa Andrea Concheyro |
author_sort |
Edgardo Romero |
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 |
publishDate |
2019 |
url |
https://doi.org/10.24425/ppr.2019.129672 https://doaj.org/article/be30b26efd6749ad800c1238fc97b2aa |
long_lat |
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(-57.183,-57.183,-64.466,-64.466) |
geographic |
Antarctic Antarctic Peninsula Romero Vega Island Hill Island Snow Hill Island Snow Hill |
geographic_facet |
Antarctic Antarctic Peninsula Romero Vega Island Hill Island Snow Hill Island 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_source |
Polish Polar Research, Vol vol. 40, Iss No 3, Pp 227-253 (2019) |
op_relation |
https://journals.pan.pl/Content/113183/PDF/PPR%203-19%203-E.Romero.pdf https://doaj.org/toc/0138-0338 https://doaj.org/toc/2081-8262 0138-0338 2081-8262 https://doi.org/10.24425/ppr.2019.129672 https://doaj.org/article/be30b26efd6749ad800c1238fc97b2aa |
op_doi |
https://doi.org/10.24425/ppr.2019.129672 |
_version_ |
1766246797497335808 |