Conifer wood assemblage dominated by Podocarpaceae, early Eocene of Laguna del Hunco, central Argentinean Patagonia
During the early Eocene, Patagonia had highly diverse floras that are primarily known from compression and pollen fossils. Fossil wood studies from this epoch are scarce in the region and largely absent from the Laguna del Hunco flora, which has a highly diverse and excellently preserved compression...
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ftconicet:oai:ri.conicet.gov.ar:11336/114994 2023-10-09T21:47:15+02:00 Conifer wood assemblage dominated by Podocarpaceae, early Eocene of Laguna del Hunco, central Argentinean Patagonia Pujana, Roberto Roman Wilf, Peter Gandolfo, María Alejandra application/pdf http://hdl.handle.net/11336/114994 eng eng Pensoft Publishers info:eu-repo/semantics/altIdentifier/url/https://phytokeys.pensoft.net/article/54175/ info:eu-repo/semantics/altIdentifier/doi/10.3897/phytokeys.156.54175 http://hdl.handle.net/11336/114994 Pujana, Roberto Roman; Wilf, Peter; Gandolfo, María Alejandra; Conifer wood assemblage dominated by Podocarpaceae, early Eocene of Laguna del Hunco, central Argentinean Patagonia; Pensoft Publishers; PhytoKeys; 156; 8-2020; 81-102 1314-2011 1314-2003 CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ FOSSIL FORESTS HUITRERA FORMATION PALEOGENE PODOCARPACEAE SOUTH AMERICA WOOD ANATOMY https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.3897/phytokeys.156.54175 2023-09-24T19:20:18Z During the early Eocene, Patagonia had highly diverse floras that are primarily known from compression and pollen fossils. Fossil wood studies from this epoch are scarce in the region and largely absent from the Laguna del Hunco flora, which has a highly diverse and excellently preserved compression assemblage. A collection of 26 conifer woods from the Laguna del Hunco fossil-lake beds (early Eocene, ca. 52 Ma) from central-western Patagonia was studied, of which 12 could be identified to genus. The dominant species is Phyllocladoxylon antarcticum, which has affinity with early-diverging Podocarpaceae such as Phyllocladus and Prumnnopitys. A single specimen of Protophyllocladoxylon francisiae probably represents an extinct group of Podocarpaceae. In addition, two taxonomic units of cf. Cupressinoxylon with putative affinity to Podocarpaceae were found. Diverse Podocarpaceae taxa consistent with the affinities of these woods were previously reported from vegetative and reproductive macrofossils as well as pollen grains from the same source unit. Some of the woods have galleries filled with frass. Distinct growth ring boundaries indicate seasonality, inferred to represent seasonal light availability. Growth ring widths suggest that the woods came from mature trees, whereas the widths and types of some rings denote near-uniform temperature and water availability conditions. Fil: Pujana, Roberto Roman. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina Fil: Wilf, Peter. State University of Pennsylvania; Estados Unidos Fil: Gandolfo, María Alejandra. Cornell University; Estados Unidos Article in Journal/Newspaper Antarc* CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Patagonia Argentino Argentina Fossil Lake ENVELOPE(-128.902,-128.902,66.276,66.276) PhytoKeys 156 81 102 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
FOSSIL FORESTS HUITRERA FORMATION PALEOGENE PODOCARPACEAE SOUTH AMERICA WOOD ANATOMY https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
FOSSIL FORESTS HUITRERA FORMATION PALEOGENE PODOCARPACEAE SOUTH AMERICA WOOD ANATOMY https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Pujana, Roberto Roman Wilf, Peter Gandolfo, María Alejandra Conifer wood assemblage dominated by Podocarpaceae, early Eocene of Laguna del Hunco, central Argentinean Patagonia |
topic_facet |
FOSSIL FORESTS HUITRERA FORMATION PALEOGENE PODOCARPACEAE SOUTH AMERICA WOOD ANATOMY https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
During the early Eocene, Patagonia had highly diverse floras that are primarily known from compression and pollen fossils. Fossil wood studies from this epoch are scarce in the region and largely absent from the Laguna del Hunco flora, which has a highly diverse and excellently preserved compression assemblage. A collection of 26 conifer woods from the Laguna del Hunco fossil-lake beds (early Eocene, ca. 52 Ma) from central-western Patagonia was studied, of which 12 could be identified to genus. The dominant species is Phyllocladoxylon antarcticum, which has affinity with early-diverging Podocarpaceae such as Phyllocladus and Prumnnopitys. A single specimen of Protophyllocladoxylon francisiae probably represents an extinct group of Podocarpaceae. In addition, two taxonomic units of cf. Cupressinoxylon with putative affinity to Podocarpaceae were found. Diverse Podocarpaceae taxa consistent with the affinities of these woods were previously reported from vegetative and reproductive macrofossils as well as pollen grains from the same source unit. Some of the woods have galleries filled with frass. Distinct growth ring boundaries indicate seasonality, inferred to represent seasonal light availability. Growth ring widths suggest that the woods came from mature trees, whereas the widths and types of some rings denote near-uniform temperature and water availability conditions. Fil: Pujana, Roberto Roman. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina Fil: Wilf, Peter. State University of Pennsylvania; Estados Unidos Fil: Gandolfo, María Alejandra. Cornell University; Estados Unidos |
format |
Article in Journal/Newspaper |
author |
Pujana, Roberto Roman Wilf, Peter Gandolfo, María Alejandra |
author_facet |
Pujana, Roberto Roman Wilf, Peter Gandolfo, María Alejandra |
author_sort |
Pujana, Roberto Roman |
title |
Conifer wood assemblage dominated by Podocarpaceae, early Eocene of Laguna del Hunco, central Argentinean Patagonia |
title_short |
Conifer wood assemblage dominated by Podocarpaceae, early Eocene of Laguna del Hunco, central Argentinean Patagonia |
title_full |
Conifer wood assemblage dominated by Podocarpaceae, early Eocene of Laguna del Hunco, central Argentinean Patagonia |
title_fullStr |
Conifer wood assemblage dominated by Podocarpaceae, early Eocene of Laguna del Hunco, central Argentinean Patagonia |
title_full_unstemmed |
Conifer wood assemblage dominated by Podocarpaceae, early Eocene of Laguna del Hunco, central Argentinean Patagonia |
title_sort |
conifer wood assemblage dominated by podocarpaceae, early eocene of laguna del hunco, central argentinean patagonia |
publisher |
Pensoft Publishers |
url |
http://hdl.handle.net/11336/114994 |
long_lat |
ENVELOPE(-128.902,-128.902,66.276,66.276) |
geographic |
Patagonia Argentino Argentina Fossil Lake |
geographic_facet |
Patagonia Argentino Argentina Fossil Lake |
genre |
Antarc* |
genre_facet |
Antarc* |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://phytokeys.pensoft.net/article/54175/ info:eu-repo/semantics/altIdentifier/doi/10.3897/phytokeys.156.54175 http://hdl.handle.net/11336/114994 Pujana, Roberto Roman; Wilf, Peter; Gandolfo, María Alejandra; Conifer wood assemblage dominated by Podocarpaceae, early Eocene of Laguna del Hunco, central Argentinean Patagonia; Pensoft Publishers; PhytoKeys; 156; 8-2020; 81-102 1314-2011 1314-2003 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ |
op_doi |
https://doi.org/10.3897/phytokeys.156.54175 |
container_title |
PhytoKeys |
container_volume |
156 |
container_start_page |
81 |
op_container_end_page |
102 |
_version_ |
1779310224872570880 |