New taxa in the paleocene flora from the cross Valley-Wiman Formation, Marambio (=Seymour) Island, Antarctica
The Paleocene at the Marambio Island (James Ross Basin) is represented by three marine sedimentary units. The uppermost unit corresponds to the Cross Valley-Wiman Formation (CVWF), which overlies previous units by a strong erosive discordance. Contrary to the underlayed units, the CVWF is characteri...
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Asociación Paleontológica Argentina
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ftconicet:oai:ri.conicet.gov.ar:11336/202105 2024-06-23T07:47:48+00:00 New taxa in the paleocene flora from the cross Valley-Wiman Formation, Marambio (=Seymour) Island, Antarctica Iglesias, Aimé Lucila Gallardo, R. Pipo, María Laura Santillana, Sergio Nestor Talevi, Marianella Internacional application/pdf http://hdl.handle.net/11336/202105 eng eng Asociación Paleontológica Argentina info:eu-repo/semantics/altIdentifier/url/https://www.peapaleontologica.org.ar/index.php/peapa/article/view/324 http://hdl.handle.net/11336/202105 New taxa in the paleocene flora from the cross Valley-Wiman Formation, Marambio (=Seymour) Island, Antarctica; Reunión anual de comunicaciones de la Asociación Paleontológica Argentina; Argentina; 2019; 20-20 2469-0228 CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc/2.5/ar/ PALEOCENE ANTARTIDA FLORA https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/conferenceObject info:ar-repo/semantics/documento de conferencia Jornada Journal ftconicet 2024-05-27T23:56:36Z The Paleocene at the Marambio Island (James Ross Basin) is represented by three marine sedimentary units. The uppermost unit corresponds to the Cross Valley-Wiman Formation (CVWF), which overlies previous units by a strong erosive discordance. Contrary to the underlayed units, the CVWF is characterized by the preservation of a rich flora of compressions and petrifications; preserving leaves and seeds at it uppermost section (Bahía Pingüino Allomember), that corresponds to lagoon or protected bay facies and which age has been dated as upper Paleocene (C25n, Thanetian). Its fossil records are known since the Dusén studies from 1908, who proposed 87 leaf taxa. Despite its Southern Hemisphere importance, few studies has revised the plant type materials, recognizing a richness reduction from the originally proposed to three fern species, two conifers, and 14 angiosperms. New Argentina field works has permitted identify the 19 previous taxa, recognized two more from Dusén (Mollinedia seymourensis and Phyllites sp. 14), and adds seven new findings (a fertile fern, a filmy fern, and five angiosperms). The unbiased collection of 282 exemplars allows to measure the taphoflora relative abundance. It indicates the dominance (35 %) of ferns (Cladophlebis and Sphenopteris). The most common angiosperm families were: Atherospermathaceae, Lauraceae, Moraceae?, Nothofagaceae, and Winteraceae. The Araucariaceae also were well represented, in agreement with wood studies. The CVWF taphoflora overpass the Paleocene known richness in all the Antarctic Peninsula, adds new elements, and quantify the relative proportion of taxa. Fil: Iglesias, Aimé Lucila. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina Fil: Gallardo, R. Departamento de Geologia y Petroleo ... Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Seymour Island CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic Antarctic Peninsula Argentina Bahía Pingüino ENVELOPE(-36.233,-36.233,-54.333,-54.333) Cross Valley ENVELOPE(-56.683,-56.683,-64.258,-64.258) Marambio ENVELOPE(-56.750,-56.750,-64.283,-64.283) Patagonia Pingüino ENVELOPE(-56.650,-56.650,-64.266,-64.266) Seymour ENVELOPE(-56.767,-56.767,-64.283,-64.283) Seymour Island ENVELOPE(-56.750,-56.750,-64.283,-64.283) The Antarctic |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
PALEOCENE ANTARTIDA FLORA https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
PALEOCENE ANTARTIDA FLORA https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Iglesias, Aimé Lucila Gallardo, R. Pipo, María Laura Santillana, Sergio Nestor Talevi, Marianella New taxa in the paleocene flora from the cross Valley-Wiman Formation, Marambio (=Seymour) Island, Antarctica |
topic_facet |
PALEOCENE ANTARTIDA FLORA https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
The Paleocene at the Marambio Island (James Ross Basin) is represented by three marine sedimentary units. The uppermost unit corresponds to the Cross Valley-Wiman Formation (CVWF), which overlies previous units by a strong erosive discordance. Contrary to the underlayed units, the CVWF is characterized by the preservation of a rich flora of compressions and petrifications; preserving leaves and seeds at it uppermost section (Bahía Pingüino Allomember), that corresponds to lagoon or protected bay facies and which age has been dated as upper Paleocene (C25n, Thanetian). Its fossil records are known since the Dusén studies from 1908, who proposed 87 leaf taxa. Despite its Southern Hemisphere importance, few studies has revised the plant type materials, recognizing a richness reduction from the originally proposed to three fern species, two conifers, and 14 angiosperms. New Argentina field works has permitted identify the 19 previous taxa, recognized two more from Dusén (Mollinedia seymourensis and Phyllites sp. 14), and adds seven new findings (a fertile fern, a filmy fern, and five angiosperms). The unbiased collection of 282 exemplars allows to measure the taphoflora relative abundance. It indicates the dominance (35 %) of ferns (Cladophlebis and Sphenopteris). The most common angiosperm families were: Atherospermathaceae, Lauraceae, Moraceae?, Nothofagaceae, and Winteraceae. The Araucariaceae also were well represented, in agreement with wood studies. The CVWF taphoflora overpass the Paleocene known richness in all the Antarctic Peninsula, adds new elements, and quantify the relative proportion of taxa. Fil: Iglesias, Aimé Lucila. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina Fil: Gallardo, R. Departamento de Geologia y Petroleo ... |
format |
Journal/Newspaper |
author |
Iglesias, Aimé Lucila Gallardo, R. Pipo, María Laura Santillana, Sergio Nestor Talevi, Marianella |
author_facet |
Iglesias, Aimé Lucila Gallardo, R. Pipo, María Laura Santillana, Sergio Nestor Talevi, Marianella |
author_sort |
Iglesias, Aimé Lucila |
title |
New taxa in the paleocene flora from the cross Valley-Wiman Formation, Marambio (=Seymour) Island, Antarctica |
title_short |
New taxa in the paleocene flora from the cross Valley-Wiman Formation, Marambio (=Seymour) Island, Antarctica |
title_full |
New taxa in the paleocene flora from the cross Valley-Wiman Formation, Marambio (=Seymour) Island, Antarctica |
title_fullStr |
New taxa in the paleocene flora from the cross Valley-Wiman Formation, Marambio (=Seymour) Island, Antarctica |
title_full_unstemmed |
New taxa in the paleocene flora from the cross Valley-Wiman Formation, Marambio (=Seymour) Island, Antarctica |
title_sort |
new taxa in the paleocene flora from the cross valley-wiman formation, marambio (=seymour) island, antarctica |
publisher |
Asociación Paleontológica Argentina |
url |
http://hdl.handle.net/11336/202105 |
op_coverage |
Internacional |
long_lat |
ENVELOPE(-36.233,-36.233,-54.333,-54.333) ENVELOPE(-56.683,-56.683,-64.258,-64.258) ENVELOPE(-56.750,-56.750,-64.283,-64.283) ENVELOPE(-56.650,-56.650,-64.266,-64.266) ENVELOPE(-56.767,-56.767,-64.283,-64.283) ENVELOPE(-56.750,-56.750,-64.283,-64.283) |
geographic |
Antarctic Antarctic Peninsula Argentina Bahía Pingüino Cross Valley Marambio Patagonia Pingüino Seymour Seymour Island The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Argentina Bahía Pingüino Cross Valley Marambio Patagonia Pingüino Seymour Seymour Island The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Seymour Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Seymour Island |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://www.peapaleontologica.org.ar/index.php/peapa/article/view/324 http://hdl.handle.net/11336/202105 New taxa in the paleocene flora from the cross Valley-Wiman Formation, Marambio (=Seymour) Island, Antarctica; Reunión anual de comunicaciones de la Asociación Paleontológica Argentina; Argentina; 2019; 20-20 2469-0228 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc/2.5/ar/ |
_version_ |
1802637984883802112 |