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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| Formato: | JOUR |
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00027014_v55_n1_p91_Mirabelli |
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todo:paper_00027014_v55_n1_p91_Mirabelli2023-10-03T13:53:23Z Conifer Fossil Woods from the Sobral Formation (Lower Paleocene, Western Antarctica) Mirabelli, S.L. Pujana, R.R. Marenssi, S.A. Santillana, S.N. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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 Mirabelli, S.L. Pujana, R.R. Marenssi, S.A. Santillana, S.N. 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. |
| format |
JOUR |
| author |
Mirabelli, S.L. Pujana, R.R. Marenssi, S.A. Santillana, S.N. |
| author_facet |
Mirabelli, S.L. Pujana, R.R. Marenssi, S.A. Santillana, S.N. |
| author_sort |
Mirabelli, S.L. |
| 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) |
| url |
http://hdl.handle.net/20.500.12110/paper_00027014_v55_n1_p91_Mirabelli |
| work_keys_str_mv |
AT mirabellisl coniferfossilwoodsfromthesobralformationlowerpaleocenewesternantarctica AT pujanarr coniferfossilwoodsfromthesobralformationlowerpaleocenewesternantarctica AT marenssisa coniferfossilwoodsfromthesobralformationlowerpaleocenewesternantarctica AT santillanasn coniferfossilwoodsfromthesobralformationlowerpaleocenewesternantarctica |
| _version_ |
1807316888993136640 |