Triassic Kykloxylon wood (Umkomasiaceae, Gymnospermopsida) from Skinner Ridge, northern Victoria Land, East Antarctica
International audience During the ␣rst Korea Antarctic Geological Expedition (KAGEX I, 2013/2014), fossil wood was collected from the Triassic ␣uvial deposits of the Beacon Supergroup at Skinner Ridge in northern Victoria Land, Antarctica. The material is coali␣ed and partially silici␣ed; most speci...
Published in: | Review of Palaeobotany and Palynology |
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Main Authors: | , , , , , , , |
Other Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2016
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Subjects: | |
Online Access: | https://sde.hal.science/hal-01369185 https://doi.org/10.1016/j.revpalbo.2016.07.006 |
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ftunivlyon:oai:HAL:hal-01369185v1 |
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openpolar |
institution |
Open Polar |
collection |
Université de Lyon: HAL |
op_collection_id |
ftunivlyon |
language |
English |
topic |
Fossil wood Triassic Kykloxylon Umkomasiaceae Skinner Ridge Antarctica [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
Fossil wood Triassic Kykloxylon Umkomasiaceae Skinner Ridge Antarctica [SDE.BE]Environmental Sciences/Biodiversity and Ecology Oh, Changhwan Park, Tae-Yoon Woo, Jusun Bomfleur, Benjamin Philippe, Marc Decombeix, Anne-Laure Kim, Young-Hwan G. Lee, Jong Ik Triassic Kykloxylon wood (Umkomasiaceae, Gymnospermopsida) from Skinner Ridge, northern Victoria Land, East Antarctica |
topic_facet |
Fossil wood Triassic Kykloxylon Umkomasiaceae Skinner Ridge Antarctica [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience During the ␣rst Korea Antarctic Geological Expedition (KAGEX I, 2013/2014), fossil wood was collected from the Triassic ␣uvial deposits of the Beacon Supergroup at Skinner Ridge in northern Victoria Land, Antarctica. The material is coali␣ed and partially silici␣ed; most specimens are slightly compressed due to burial compaction. In spite of this imperfect preservation, anatomical features of both the xylem and the pith could be observed in some specimens. The xylem displays prominent growth rings and usually araucarioid or somewhat mixed- type radial pitting with some abnormal rings partly composed of parenchymatous tissues. Some specimens also have a wood cylinder that is divided radially by parenchymatous zones. These anatomical features indicate a systematic af␣nity with Kykloxylon Mey.-Berth., T.N.Taylor et Ed.L.Taylor, a characteristic wood type of the Umkomaciaceae, which ␣ourished throughout Gondwana during the Triassic. The Kykloxylon specimens in this study represent the only wood fossil taxon in the Triassic of Victoria Land, except for a dubious report of Antarcticoxylon Seward in 1914. This may indicate a low diversity of Triassic wood fossils in this area, as in other parts of Antarctica. On the contrary, diverse other gymnosperm organs are known to occur in the Triassic of Antarctica. This low diversity of wood taxa compared to the various plant organs in the Triassic of Antarctica is remarkable. We hypothesize three major reasons for this: 1) the overall structural uniformity of gymnosperm wood compared to other vegetative and especially reproductive organ diversity; 2) the overwhelming dominance of corystosperm plants, with a minor component of voltzialean conifers in the canopy-forming forest vegetation during the Triassic in Antarctica; and 3) the very few systematic studies of fossil wood compared to other plant macrofossils. |
author2 |
Division of Polar Earth-System Sciences Korea Polar Research Institute (KOPRI) Forschungsstelle für Paläobotanik Westfälische Wilhelms-Universität Münster = University of Münster (WWU) Department of Palaeobotany Swedish Museum of Natural History Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés (LEHNA) Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS) Botanique et Modélisation de l'Architecture des Plantes et des Végétations (UMR AMAP) Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud ) Polar Science University of Science and Technology |
format |
Article in Journal/Newspaper |
author |
Oh, Changhwan Park, Tae-Yoon Woo, Jusun Bomfleur, Benjamin Philippe, Marc Decombeix, Anne-Laure Kim, Young-Hwan G. Lee, Jong Ik |
author_facet |
Oh, Changhwan Park, Tae-Yoon Woo, Jusun Bomfleur, Benjamin Philippe, Marc Decombeix, Anne-Laure Kim, Young-Hwan G. Lee, Jong Ik |
author_sort |
Oh, Changhwan |
title |
Triassic Kykloxylon wood (Umkomasiaceae, Gymnospermopsida) from Skinner Ridge, northern Victoria Land, East Antarctica |
title_short |
Triassic Kykloxylon wood (Umkomasiaceae, Gymnospermopsida) from Skinner Ridge, northern Victoria Land, East Antarctica |
title_full |
Triassic Kykloxylon wood (Umkomasiaceae, Gymnospermopsida) from Skinner Ridge, northern Victoria Land, East Antarctica |
title_fullStr |
Triassic Kykloxylon wood (Umkomasiaceae, Gymnospermopsida) from Skinner Ridge, northern Victoria Land, East Antarctica |
title_full_unstemmed |
Triassic Kykloxylon wood (Umkomasiaceae, Gymnospermopsida) from Skinner Ridge, northern Victoria Land, East Antarctica |
title_sort |
triassic kykloxylon wood (umkomasiaceae, gymnospermopsida) from skinner ridge, northern victoria land, east antarctica |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://sde.hal.science/hal-01369185 https://doi.org/10.1016/j.revpalbo.2016.07.006 |
long_lat |
ENVELOPE(161.750,161.750,-74.400,-74.400) |
geographic |
Antarctic East Antarctica Skinner Ridge Victoria Land |
geographic_facet |
Antarctic East Antarctica Skinner Ridge Victoria Land |
genre |
Antarc* Antarctic Antarctica East Antarctica Victoria Land |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Victoria Land |
op_source |
ISSN: 0034-6667 Review of Palaeobotany and Palynology https://sde.hal.science/hal-01369185 Review of Palaeobotany and Palynology, 2016, 233, pp.104-114. ⟨10.1016/j.revpalbo.2016.07.006⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.revpalbo.2016.07.006 hal-01369185 https://sde.hal.science/hal-01369185 doi:10.1016/j.revpalbo.2016.07.006 |
op_doi |
https://doi.org/10.1016/j.revpalbo.2016.07.006 |
container_title |
Review of Palaeobotany and Palynology |
container_volume |
233 |
container_start_page |
104 |
op_container_end_page |
114 |
_version_ |
1790593436929228800 |
spelling |
ftunivlyon:oai:HAL:hal-01369185v1 2024-02-11T09:57:54+01:00 Triassic Kykloxylon wood (Umkomasiaceae, Gymnospermopsida) from Skinner Ridge, northern Victoria Land, East Antarctica Oh, Changhwan Park, Tae-Yoon Woo, Jusun Bomfleur, Benjamin Philippe, Marc Decombeix, Anne-Laure Kim, Young-Hwan G. Lee, Jong Ik Division of Polar Earth-System Sciences Korea Polar Research Institute (KOPRI) Forschungsstelle für Paläobotanik Westfälische Wilhelms-Universität Münster = University of Münster (WWU) Department of Palaeobotany Swedish Museum of Natural History Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés (LEHNA) Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS) Botanique et Modélisation de l'Architecture des Plantes et des Végétations (UMR AMAP) Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud ) Polar Science University of Science and Technology 2016 https://sde.hal.science/hal-01369185 https://doi.org/10.1016/j.revpalbo.2016.07.006 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.revpalbo.2016.07.006 hal-01369185 https://sde.hal.science/hal-01369185 doi:10.1016/j.revpalbo.2016.07.006 ISSN: 0034-6667 Review of Palaeobotany and Palynology https://sde.hal.science/hal-01369185 Review of Palaeobotany and Palynology, 2016, 233, pp.104-114. ⟨10.1016/j.revpalbo.2016.07.006⟩ Fossil wood Triassic Kykloxylon Umkomasiaceae Skinner Ridge Antarctica [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2016 ftunivlyon https://doi.org/10.1016/j.revpalbo.2016.07.006 2024-01-24T17:55:21Z International audience During the ␣rst Korea Antarctic Geological Expedition (KAGEX I, 2013/2014), fossil wood was collected from the Triassic ␣uvial deposits of the Beacon Supergroup at Skinner Ridge in northern Victoria Land, Antarctica. The material is coali␣ed and partially silici␣ed; most specimens are slightly compressed due to burial compaction. In spite of this imperfect preservation, anatomical features of both the xylem and the pith could be observed in some specimens. The xylem displays prominent growth rings and usually araucarioid or somewhat mixed- type radial pitting with some abnormal rings partly composed of parenchymatous tissues. Some specimens also have a wood cylinder that is divided radially by parenchymatous zones. These anatomical features indicate a systematic af␣nity with Kykloxylon Mey.-Berth., T.N.Taylor et Ed.L.Taylor, a characteristic wood type of the Umkomaciaceae, which ␣ourished throughout Gondwana during the Triassic. The Kykloxylon specimens in this study represent the only wood fossil taxon in the Triassic of Victoria Land, except for a dubious report of Antarcticoxylon Seward in 1914. This may indicate a low diversity of Triassic wood fossils in this area, as in other parts of Antarctica. On the contrary, diverse other gymnosperm organs are known to occur in the Triassic of Antarctica. This low diversity of wood taxa compared to the various plant organs in the Triassic of Antarctica is remarkable. We hypothesize three major reasons for this: 1) the overall structural uniformity of gymnosperm wood compared to other vegetative and especially reproductive organ diversity; 2) the overwhelming dominance of corystosperm plants, with a minor component of voltzialean conifers in the canopy-forming forest vegetation during the Triassic in Antarctica; and 3) the very few systematic studies of fossil wood compared to other plant macrofossils. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Victoria Land Université de Lyon: HAL Antarctic East Antarctica Skinner Ridge ENVELOPE(161.750,161.750,-74.400,-74.400) Victoria Land Review of Palaeobotany and Palynology 233 104 114 |