Conifers from the Upper Cretaceous of Cape Lamb, Vega Island, Antarctica

A fragment of an araucarian ovuliferous cone, araucarian leaves and podocarpaceous wood are described from Upper Cretaceous strata exposed at Cape Lamb, Vega Island, Antarctica. The wood fragment and the reproductive cone come from the middle part of the early Maastrichtian K2 unit whereas the leave...

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Detalles Bibliográficos
Autores principales: Césari, Silvia Nélida, Marenssi, Sergio Alfredo, Santillana, Sergio Néstor
Publicado: 2001
Materias:
Antarctica
Araucariaceae
Conifers
Cretaceous
Podocarpaceae
coniferous tree
new species
paleoclimate
paleoenvironment
Cape Lamb
Vega Island
Araucaria antarctica
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01956671_v22_n3_p309_Cesari
http://hdl.handle.net/20.500.12110/paper_01956671_v22_n3_p309_Cesari
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_01956671_v22_n3_p309_Cesari
record_format dspace
spelling paper:paper_01956671_v22_n3_p309_Cesari2023-06-08T15:20:08Z Conifers from the Upper Cretaceous of Cape Lamb, Vega Island, Antarctica Césari, Silvia Nélida Marenssi, Sergio Alfredo Santillana, Sergio Néstor Antarctica Araucariaceae Conifers Cretaceous Podocarpaceae coniferous tree Cretaceous new species paleoclimate paleoenvironment Antarctica Cape Lamb Vega Island Araucaria antarctica Araucariaceae Podocarpaceae A fragment of an araucarian ovuliferous cone, araucarian leaves and podocarpaceous wood are described from Upper Cretaceous strata exposed at Cape Lamb, Vega Island, Antarctica. The wood fragment and the reproductive cone come from the middle part of the early Maastrichtian K2 unit whereas the leaves referred to a new species, Araucaria antarctica, were recovered from the younger (mid?) Maastrichtian K3 unit (Sandwich Bluff Member of the Lopez de Bertodano Formation). These are the first plant megafossils to be described in detail for this locality and represent components of a Late Cretaceous forest community growing under cold-temperate conditions. The findings reported herein highlight the potential value of the fossiliferous sequence exposed on Vega Island, which has not yet been fully investigated, and provide insights into the diversity and structure of the high latitude, Late Cretaceous conifer-dominated floras. © 2001 Academic Press. Fil:Césari, S.N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Marenssi, S.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Santillana, S.N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2001 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01956671_v22_n3_p309_Cesari http://hdl.handle.net/20.500.12110/paper_01956671_v22_n3_p309_Cesari
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
Conifers
Cretaceous
Podocarpaceae
coniferous tree
Cretaceous
new species
paleoclimate
paleoenvironment
Antarctica
Cape Lamb
Vega Island
Araucaria antarctica
Araucariaceae
Podocarpaceae
spellingShingle Antarctica
Araucariaceae
Conifers
Cretaceous
Podocarpaceae
coniferous tree
Cretaceous
new species
paleoclimate
paleoenvironment
Antarctica
Cape Lamb
Vega Island
Araucaria antarctica
Araucariaceae
Podocarpaceae
Césari, Silvia Nélida
Marenssi, Sergio Alfredo
Santillana, Sergio Néstor
Conifers from the Upper Cretaceous of Cape Lamb, Vega Island, Antarctica
topic_facet Antarctica
Araucariaceae
Conifers
Cretaceous
Podocarpaceae
coniferous tree
Cretaceous
new species
paleoclimate
paleoenvironment
Antarctica
Cape Lamb
Vega Island
Araucaria antarctica
Araucariaceae
Podocarpaceae
description A fragment of an araucarian ovuliferous cone, araucarian leaves and podocarpaceous wood are described from Upper Cretaceous strata exposed at Cape Lamb, Vega Island, Antarctica. The wood fragment and the reproductive cone come from the middle part of the early Maastrichtian K2 unit whereas the leaves referred to a new species, Araucaria antarctica, were recovered from the younger (mid?) Maastrichtian K3 unit (Sandwich Bluff Member of the Lopez de Bertodano Formation). These are the first plant megafossils to be described in detail for this locality and represent components of a Late Cretaceous forest community growing under cold-temperate conditions. The findings reported herein highlight the potential value of the fossiliferous sequence exposed on Vega Island, which has not yet been fully investigated, and provide insights into the diversity and structure of the high latitude, Late Cretaceous conifer-dominated floras. © 2001 Academic Press.
author Césari, Silvia Nélida
Marenssi, Sergio Alfredo
Santillana, Sergio Néstor
author_facet Césari, Silvia Nélida
Marenssi, Sergio Alfredo
Santillana, Sergio Néstor
author_sort Césari, Silvia Nélida
title Conifers from the Upper Cretaceous of Cape Lamb, Vega Island, Antarctica
title_short Conifers from the Upper Cretaceous of Cape Lamb, Vega Island, Antarctica
title_full Conifers from the Upper Cretaceous of Cape Lamb, Vega Island, Antarctica
title_fullStr Conifers from the Upper Cretaceous of Cape Lamb, Vega Island, Antarctica
title_full_unstemmed Conifers from the Upper Cretaceous of Cape Lamb, Vega Island, Antarctica
title_sort conifers from the upper cretaceous of cape lamb, vega island, antarctica
publishDate 2001
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01956671_v22_n3_p309_Cesari
http://hdl.handle.net/20.500.12110/paper_01956671_v22_n3_p309_Cesari
work_keys_str_mv AT cesarisilvianelida conifersfromtheuppercretaceousofcapelambvegaislandantarctica
AT marenssisergioalfredo conifersfromtheuppercretaceousofcapelambvegaislandantarctica
AT santillanasergionestor conifersfromtheuppercretaceousofcapelambvegaislandantarctica
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