A unique Late Cretaceous fossil wood assemblage from Chilean Patagonia provides clues to a high‐latitude continental environment
Abstract Fossil plants, including large trunks, stems, some branches, and twigs, were collected from the Maastrichtian (68.9 Ma), upper Dorotea Formation in the Magallanes–Austral Basin, 16 km north of the Cerro Guido–Las Chinas complex in the southern Chilean Magallanes region. These fossil trunks...
Published in: | Papers in Palaeontology |
---|---|
Main Authors: | , , , , , , |
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2023
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/spp2.1536 https://onlinelibrary.wiley.com/doi/pdf/10.1002/spp2.1536 |
id |
crwiley:10.1002/spp2.1536 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/spp2.1536 2024-09-30T14:25:19+00:00 A unique Late Cretaceous fossil wood assemblage from Chilean Patagonia provides clues to a high‐latitude continental environment Martínez, Leandro C. A. Leppe, Marcelo Manríquez, Leslie M. E. Pino, Juan Pablo Trevisan, Cristine Manfroi, Joseline Mansilla, Héctor Conselho Nacional de Desenvolvimento Científico e Tecnológico Fondo Nacional de Desarrollo Científico y Tecnológico Agencia Nacional de Promoción Científica y Tecnológica 2023 http://dx.doi.org/10.1002/spp2.1536 https://onlinelibrary.wiley.com/doi/pdf/10.1002/spp2.1536 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Papers in Palaeontology volume 9, issue 6 ISSN 2056-2799 2056-2802 journal-article 2023 crwiley https://doi.org/10.1002/spp2.1536 2024-09-03T04:26:06Z Abstract Fossil plants, including large trunks, stems, some branches, and twigs, were collected from the Maastrichtian (68.9 Ma), upper Dorotea Formation in the Magallanes–Austral Basin, 16 km north of the Cerro Guido–Las Chinas complex in the southern Chilean Magallanes region. These fossil trunks range from 0.2 to 2.2 m in length. Petrographic slides were made in three sections (transverse, radial and tangential) and analysed under a light microscope to study the permineralized fossils. The woods and stems belong to Austroginkgoxylon gen. et sp. nov., Agathoxylon antarcticum , Podocarpoxylon paradoxi sp. nov., Podocarpoxylon mazzonii , Palmoxylon subantarcticae and Notomalvaceoxylon magallanense gen. et sp. nov. The growth rings of gymnosperms and anatomical characters of angiosperms were analysed to obtain palaeoecological data. Interactions between gymnosperm roots growing into the secondary xylem of an angiosperm (nurse logs) are recorded. The data obtained from the fossil woods suggest warm and humid conditions in this southern South American locality during the Late Cretaceous, providing a unique opportunity to study continental environments at high southern latitudes, which are poorly represented on a global scale. Article in Journal/Newspaper Antarc* Wiley Online Library Austral Patagonia Magallanes ENVELOPE(-62.933,-62.933,-64.883,-64.883) Guido ENVELOPE(-60.933,-60.933,-64.050,-64.050) Papers in Palaeontology 9 6 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Fossil plants, including large trunks, stems, some branches, and twigs, were collected from the Maastrichtian (68.9 Ma), upper Dorotea Formation in the Magallanes–Austral Basin, 16 km north of the Cerro Guido–Las Chinas complex in the southern Chilean Magallanes region. These fossil trunks range from 0.2 to 2.2 m in length. Petrographic slides were made in three sections (transverse, radial and tangential) and analysed under a light microscope to study the permineralized fossils. The woods and stems belong to Austroginkgoxylon gen. et sp. nov., Agathoxylon antarcticum , Podocarpoxylon paradoxi sp. nov., Podocarpoxylon mazzonii , Palmoxylon subantarcticae and Notomalvaceoxylon magallanense gen. et sp. nov. The growth rings of gymnosperms and anatomical characters of angiosperms were analysed to obtain palaeoecological data. Interactions between gymnosperm roots growing into the secondary xylem of an angiosperm (nurse logs) are recorded. The data obtained from the fossil woods suggest warm and humid conditions in this southern South American locality during the Late Cretaceous, providing a unique opportunity to study continental environments at high southern latitudes, which are poorly represented on a global scale. |
author2 |
Conselho Nacional de Desenvolvimento Científico e Tecnológico Fondo Nacional de Desarrollo Científico y Tecnológico Agencia Nacional de Promoción Científica y Tecnológica |
format |
Article in Journal/Newspaper |
author |
Martínez, Leandro C. A. Leppe, Marcelo Manríquez, Leslie M. E. Pino, Juan Pablo Trevisan, Cristine Manfroi, Joseline Mansilla, Héctor |
spellingShingle |
Martínez, Leandro C. A. Leppe, Marcelo Manríquez, Leslie M. E. Pino, Juan Pablo Trevisan, Cristine Manfroi, Joseline Mansilla, Héctor A unique Late Cretaceous fossil wood assemblage from Chilean Patagonia provides clues to a high‐latitude continental environment |
author_facet |
Martínez, Leandro C. A. Leppe, Marcelo Manríquez, Leslie M. E. Pino, Juan Pablo Trevisan, Cristine Manfroi, Joseline Mansilla, Héctor |
author_sort |
Martínez, Leandro C. A. |
title |
A unique Late Cretaceous fossil wood assemblage from Chilean Patagonia provides clues to a high‐latitude continental environment |
title_short |
A unique Late Cretaceous fossil wood assemblage from Chilean Patagonia provides clues to a high‐latitude continental environment |
title_full |
A unique Late Cretaceous fossil wood assemblage from Chilean Patagonia provides clues to a high‐latitude continental environment |
title_fullStr |
A unique Late Cretaceous fossil wood assemblage from Chilean Patagonia provides clues to a high‐latitude continental environment |
title_full_unstemmed |
A unique Late Cretaceous fossil wood assemblage from Chilean Patagonia provides clues to a high‐latitude continental environment |
title_sort |
unique late cretaceous fossil wood assemblage from chilean patagonia provides clues to a high‐latitude continental environment |
publisher |
Wiley |
publishDate |
2023 |
url |
http://dx.doi.org/10.1002/spp2.1536 https://onlinelibrary.wiley.com/doi/pdf/10.1002/spp2.1536 |
long_lat |
ENVELOPE(-62.933,-62.933,-64.883,-64.883) ENVELOPE(-60.933,-60.933,-64.050,-64.050) |
geographic |
Austral Patagonia Magallanes Guido |
geographic_facet |
Austral Patagonia Magallanes Guido |
genre |
Antarc* |
genre_facet |
Antarc* |
op_source |
Papers in Palaeontology volume 9, issue 6 ISSN 2056-2799 2056-2802 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/spp2.1536 |
container_title |
Papers in Palaeontology |
container_volume |
9 |
container_issue |
6 |
_version_ |
1811644441885147136 |