Conifer Fossil Woods from the Sobral Formation (Lower Paleocene, Western Antarctica)

Conifer fossil woods represent 54% of an assemblage of 116 specimens collected from sediments of the Sobral Formation in Seymour (Marambio) Island, Western Antarctica. These woods are anatomically described in detail and assigned to seven fossil-species of the following fossil-genera: Agathoxylon (A...

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Detalles Bibliográficos
Publicado: 2018
Materias:
Antarctica
Araucariaceae
Podocarpaceae
Seymour (Marambio) Island
anatomy
biostratigraphy
coniferous tree
fossil assemblage
fossil record
Paleocene
palynology
wood
Seymour Island
West Antarctica
Agathoxylon
Coniferophyta
Dicotyledoneae
Podocarpoxylon
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v55_n1_p91_Mirabelli
http://hdl.handle.net/20.500.12110/paper_00027014_v55_n1_p91_Mirabelli
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00027014_v55_n1_p91_Mirabelli
record_format dspace
spelling paper:paper_00027014_v55_n1_p91_Mirabelli2023-06-08T14:22:33Z Conifer Fossil Woods from the Sobral Formation (Lower Paleocene, Western Antarctica) Antarctica Araucariaceae Podocarpaceae Seymour (Marambio) Island anatomy biostratigraphy coniferous tree fossil assemblage fossil record Paleocene palynology wood Antarctica Seymour Island West Antarctica Agathoxylon Araucariaceae Coniferophyta Dicotyledoneae Podocarpaceae Podocarpoxylon Conifer fossil woods represent 54% of an assemblage of 116 specimens collected from sediments of the Sobral Formation in Seymour (Marambio) Island, Western Antarctica. These woods are anatomically described in detail and assigned to seven fossil-species of the following fossil-genera: Agathoxylon (Araucariaceae), Podocarpoxylon, Phyllocladoxylon, Protophyllocladoxylon (Podocarpaceae), and Cupressinoxylon (Podocarpaceae/Cupressaceae). The conifer wood assemblage reveals that the most common woods are those of Agathoxylon, therefore indicating a relative abundance of the Araucariaceae in the Antarctic Paleocene forests. This abundance of the Araucariaceae woods is locally continued in the overlying Cross Valley Formation (Paleocene). Podocarpaceae woods are found in almost similar proportions to those of the Araucariaceae. Almost the other half of the fossil woods are dicotyledon woods. The proportions of the identified fossil wood taxa are consistent with those of the palynological studies of the same stratigraphic unit. © 2018 Asociacion Paleontologica Argentina. All rights reserved. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v55_n1_p91_Mirabelli http://hdl.handle.net/20.500.12110/paper_00027014_v55_n1_p91_Mirabelli
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Antarctica
Araucariaceae
Podocarpaceae
Seymour (Marambio) Island
anatomy
biostratigraphy
coniferous tree
fossil assemblage
fossil record
Paleocene
palynology
wood
Antarctica
Seymour Island
West Antarctica
Agathoxylon
Araucariaceae
Coniferophyta
Dicotyledoneae
Podocarpaceae
Podocarpoxylon
spellingShingle Antarctica
Araucariaceae
Podocarpaceae
Seymour (Marambio) Island
anatomy
biostratigraphy
coniferous tree
fossil assemblage
fossil record
Paleocene
palynology
wood
Antarctica
Seymour Island
West Antarctica
Agathoxylon
Araucariaceae
Coniferophyta
Dicotyledoneae
Podocarpaceae
Podocarpoxylon
Conifer Fossil Woods from the Sobral Formation (Lower Paleocene, Western Antarctica)
topic_facet Antarctica
Araucariaceae
Podocarpaceae
Seymour (Marambio) Island
anatomy
biostratigraphy
coniferous tree
fossil assemblage
fossil record
Paleocene
palynology
wood
Antarctica
Seymour Island
West Antarctica
Agathoxylon
Araucariaceae
Coniferophyta
Dicotyledoneae
Podocarpaceae
Podocarpoxylon
description Conifer fossil woods represent 54% of an assemblage of 116 specimens collected from sediments of the Sobral Formation in Seymour (Marambio) Island, Western Antarctica. These woods are anatomically described in detail and assigned to seven fossil-species of the following fossil-genera: Agathoxylon (Araucariaceae), Podocarpoxylon, Phyllocladoxylon, Protophyllocladoxylon (Podocarpaceae), and Cupressinoxylon (Podocarpaceae/Cupressaceae). The conifer wood assemblage reveals that the most common woods are those of Agathoxylon, therefore indicating a relative abundance of the Araucariaceae in the Antarctic Paleocene forests. This abundance of the Araucariaceae woods is locally continued in the overlying Cross Valley Formation (Paleocene). Podocarpaceae woods are found in almost similar proportions to those of the Araucariaceae. Almost the other half of the fossil woods are dicotyledon woods. The proportions of the identified fossil wood taxa are consistent with those of the palynological studies of the same stratigraphic unit. © 2018 Asociacion Paleontologica Argentina. All rights reserved.
title Conifer Fossil Woods from the Sobral Formation (Lower Paleocene, Western Antarctica)
title_short Conifer Fossil Woods from the Sobral Formation (Lower Paleocene, Western Antarctica)
title_full Conifer Fossil Woods from the Sobral Formation (Lower Paleocene, Western Antarctica)
title_fullStr Conifer Fossil Woods from the Sobral Formation (Lower Paleocene, Western Antarctica)
title_full_unstemmed Conifer Fossil Woods from the Sobral Formation (Lower Paleocene, Western Antarctica)
title_sort conifer fossil woods from the sobral formation (lower paleocene, western antarctica)
publishDate 2018
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v55_n1_p91_Mirabelli
http://hdl.handle.net/20.500.12110/paper_00027014_v55_n1_p91_Mirabelli
_version_ 1768545073945903104

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