Fossil woods from the Cross Valley Formation (Paleocene of Western Antarctica): Araucariaceae-dominated forests
Fossil woods from Paleocene sediments of the Cross Valley Formation (Seymour Island, Antarctic Peninsula) are anatomically studied in detail. We collected 64 samples represented almost exclusively by conifers (95%). Only three samples of not determinable angiosperm fossil wood were found. Preservati...
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ftunibueairesbd:todo:paper_00346667_v222_n_p56_Pujana 2023-10-29T02:31:43+01:00 Fossil woods from the Cross Valley Formation (Paleocene of Western Antarctica): Araucariaceae-dominated forests Pujana, R.R. Marenssi, S.A. Santillana, S.N. https://hdl.handle.net/20.500.12110/paper_00346667_v222_n_p56_Pujana unknown http://hdl.handle.net/20.500.12110/paper_00346667_v222_n_p56_Pujana info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Araucariaceae Paleobotany Paleocene West Antarctica Wood anatomy anatomy Cenozoic coniferous tree flora fossil terrain wood Antarctic Peninsula Antarctica Agathoxylon Coniferophyta Magnoliophyta JOUR ftunibueairesbd https://doi.org/20.500.12110/paper_00346667_v222_n_p56_Pujana 2023-10-05T01:16:58Z Fossil woods from Paleocene sediments of the Cross Valley Formation (Seymour Island, Antarctic Peninsula) are anatomically studied in detail. We collected 64 samples represented almost exclusively by conifers (95%). Only three samples of not determinable angiosperm fossil wood were found. Preservation of the samples is often poor and 52% of the samples were assigned to a fossil-species. The assemblage is dominated by Agathoxylon (Araucariaceae), particularly Agathoxylon antarcticus. Araucariaceae species are joined by Protophyllocladoxylon, Phyllocladoxylon and Cupressinoxylon. Forests dominated by Araucariaceae are unusual during the Cenozoic. The high dominance of Araucariaceae woods may be a reflection of soil conditions, weather and terrain elevation. Our study supports previous hypothesis that identified differences between the paleofloras in each side of the Antarctic Peninsula during the Paleocene. © 2015 Elsevier B.V. Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica antarcticus Seymour Island West Antarctica Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires) |
institution |
Open Polar |
collection |
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires) |
op_collection_id |
ftunibueairesbd |
language |
unknown |
topic |
Araucariaceae Paleobotany Paleocene West Antarctica Wood anatomy anatomy Cenozoic coniferous tree flora fossil terrain wood Antarctic Peninsula Antarctica Agathoxylon Coniferophyta Magnoliophyta |
spellingShingle |
Araucariaceae Paleobotany Paleocene West Antarctica Wood anatomy anatomy Cenozoic coniferous tree flora fossil terrain wood Antarctic Peninsula Antarctica Agathoxylon Coniferophyta Magnoliophyta Pujana, R.R. Marenssi, S.A. Santillana, S.N. Fossil woods from the Cross Valley Formation (Paleocene of Western Antarctica): Araucariaceae-dominated forests |
topic_facet |
Araucariaceae Paleobotany Paleocene West Antarctica Wood anatomy anatomy Cenozoic coniferous tree flora fossil terrain wood Antarctic Peninsula Antarctica Agathoxylon Coniferophyta Magnoliophyta |
description |
Fossil woods from Paleocene sediments of the Cross Valley Formation (Seymour Island, Antarctic Peninsula) are anatomically studied in detail. We collected 64 samples represented almost exclusively by conifers (95%). Only three samples of not determinable angiosperm fossil wood were found. Preservation of the samples is often poor and 52% of the samples were assigned to a fossil-species. The assemblage is dominated by Agathoxylon (Araucariaceae), particularly Agathoxylon antarcticus. Araucariaceae species are joined by Protophyllocladoxylon, Phyllocladoxylon and Cupressinoxylon. Forests dominated by Araucariaceae are unusual during the Cenozoic. The high dominance of Araucariaceae woods may be a reflection of soil conditions, weather and terrain elevation. Our study supports previous hypothesis that identified differences between the paleofloras in each side of the Antarctic Peninsula during the Paleocene. © 2015 Elsevier B.V. |
format |
Journal/Newspaper |
author |
Pujana, R.R. Marenssi, S.A. Santillana, S.N. |
author_facet |
Pujana, R.R. Marenssi, S.A. Santillana, S.N. |
author_sort |
Pujana, R.R. |
title |
Fossil woods from the Cross Valley Formation (Paleocene of Western Antarctica): Araucariaceae-dominated forests |
title_short |
Fossil woods from the Cross Valley Formation (Paleocene of Western Antarctica): Araucariaceae-dominated forests |
title_full |
Fossil woods from the Cross Valley Formation (Paleocene of Western Antarctica): Araucariaceae-dominated forests |
title_fullStr |
Fossil woods from the Cross Valley Formation (Paleocene of Western Antarctica): Araucariaceae-dominated forests |
title_full_unstemmed |
Fossil woods from the Cross Valley Formation (Paleocene of Western Antarctica): Araucariaceae-dominated forests |
title_sort |
fossil woods from the cross valley formation (paleocene of western antarctica): araucariaceae-dominated forests |
url |
https://hdl.handle.net/20.500.12110/paper_00346667_v222_n_p56_Pujana |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica antarcticus Seymour Island West Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica antarcticus Seymour Island West Antarctica |
op_relation |
http://hdl.handle.net/20.500.12110/paper_00346667_v222_n_p56_Pujana |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar |
op_doi |
https://doi.org/20.500.12110/paper_00346667_v222_n_p56_Pujana |
_version_ |
1781052459350753280 |