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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Detalles Bibliográficos
Publicado:	2015
Materias:	Araucariaceae Paleobotany Paleocene West Antarctica Wood anatomy anatomy Cenozoic coniferous tree flora fossil paleobotany terrain wood Antarctic Peninsula Antarctica Agathoxylon Coniferophyta Magnoliophyta
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00346667_v222_n_p56_Pujana http://hdl.handle.net/20.500.12110/paper_00346667_v222_n_p56_Pujana
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00346667_v222_n_p56_Pujana
record_format	dspace
spelling	paper:paper_00346667_v222_n_p56_Pujana2023-06-08T15:00:47Z Fossil woods from the Cross Valley Formation (Paleocene of Western Antarctica): Araucariaceae-dominated forests Araucariaceae Paleobotany Paleocene West Antarctica Wood anatomy anatomy Cenozoic coniferous tree flora fossil paleobotany Paleocene terrain wood Antarctic Peninsula Antarctica West Antarctica Agathoxylon Araucariaceae Coniferophyta Magnoliophyta 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. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00346667_v222_n_p56_Pujana http://hdl.handle.net/20.500.12110/paper_00346667_v222_n_p56_Pujana
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Araucariaceae Paleobotany Paleocene West Antarctica Wood anatomy anatomy Cenozoic coniferous tree flora fossil paleobotany Paleocene terrain wood Antarctic Peninsula Antarctica West Antarctica Agathoxylon Araucariaceae Coniferophyta Magnoliophyta
spellingShingle	Araucariaceae Paleobotany Paleocene West Antarctica Wood anatomy anatomy Cenozoic coniferous tree flora fossil paleobotany Paleocene terrain wood Antarctic Peninsula Antarctica West Antarctica Agathoxylon Araucariaceae Coniferophyta Magnoliophyta 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 paleobotany Paleocene terrain wood Antarctic Peninsula Antarctica West Antarctica Agathoxylon Araucariaceae 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.
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
publishDate	2015
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00346667_v222_n_p56_Pujana http://hdl.handle.net/20.500.12110/paper_00346667_v222_n_p56_Pujana
_version_	1768542931192381440

Fossil woods from the Cross Valley Formation (Paleocene of Western Antarctica): Araucariaceae-dominated forests

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