Biogeographic analysis of Jurassic-Early Cretaceous wood assemblages from Gondwana

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The terrestrial biogeography of Gondwana during Jurassic-Early Cretaceous times is poorly resolved, and the flora is usually considered to have been rather uniform. This is surprising given the size of Gondwana, which extended from the equator to the South Pole. Documenting Gondwanan terrestrial flo...

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Detalles Bibliográficos
Autor principal: Ottone, Eduardo Guillermo
Publicado: 2004
Materias:
Continental ecosystems
Early Cretaceous
Floristic provincialism
Fossil wood
Gondwana
Jurassic
Cretaceous
fossil
paleobiogeography
wood
Araucaria
Coniferophyta
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00346667_v129_n3_p141_Philippe
http://hdl.handle.net/20.500.12110/paper_00346667_v129_n3_p141_Philippe
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paper:paper_00346667_v129_n3_p141_Philippe2025-07-30T17:41:32Z Biogeographic analysis of Jurassic-Early Cretaceous wood assemblages from Gondwana Ottone, Eduardo Guillermo Continental ecosystems Early Cretaceous Floristic provincialism Fossil wood Gondwana Jurassic Cretaceous fossil Gondwana Jurassic paleobiogeography wood Araucaria Coniferophyta The terrestrial biogeography of Gondwana during Jurassic-Early Cretaceous times is poorly resolved, and the flora is usually considered to have been rather uniform. This is surprising given the size of Gondwana, which extended from the equator to the South Pole. Documenting Gondwanan terrestrial floristic provincialism in the Jurassic-Early Cretaceous times is important because it provides a historical biogeographic context in which to understand the tremendous evolutionary radiations that occurred during the mid-Cretaceous. In this paper, the distribution of Jurassic-Early Cretaceous fossil wood is analysed at generic level across the entire supercontinent. Specifically, wood assemblages are analyzed in terms of five climatic zones (summer wet, desert, winter wet, warm temperate, cool temperate) established on the basis of independent data. Results demonstrate that araucarian-like conifer wood was a dominant, cosmopolitan element, whereas other taxa showed a greater degree of provincialism. Indeed, several narrowly endemic morphogenera are recognizable from the data. Finally, comparisons with Laurasian wood assemblages indicate strong parallelism between the vegetation of both hemispheres. © 2004 Elsevier B.V. All rights reserved. Fil:Ottone, E.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00346667_v129_n3_p141_Philippe http://hdl.handle.net/20.500.12110/paper_00346667_v129_n3_p141_Philippe
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Continental ecosystems
Early Cretaceous
Floristic provincialism
Fossil wood
Gondwana
Jurassic
Cretaceous
fossil
Gondwana
Jurassic
paleobiogeography
wood
Araucaria
Coniferophyta
spellingShingle Continental ecosystems
Early Cretaceous
Floristic provincialism
Fossil wood
Gondwana
Jurassic
Cretaceous
fossil
Gondwana
Jurassic
paleobiogeography
wood
Araucaria
Coniferophyta
Ottone, Eduardo Guillermo
Biogeographic analysis of Jurassic-Early Cretaceous wood assemblages from Gondwana
topic_facet Continental ecosystems
Early Cretaceous
Floristic provincialism
Fossil wood
Gondwana
Jurassic
Cretaceous
fossil
Gondwana
Jurassic
paleobiogeography
wood
Araucaria
Coniferophyta
description The terrestrial biogeography of Gondwana during Jurassic-Early Cretaceous times is poorly resolved, and the flora is usually considered to have been rather uniform. This is surprising given the size of Gondwana, which extended from the equator to the South Pole. Documenting Gondwanan terrestrial floristic provincialism in the Jurassic-Early Cretaceous times is important because it provides a historical biogeographic context in which to understand the tremendous evolutionary radiations that occurred during the mid-Cretaceous. In this paper, the distribution of Jurassic-Early Cretaceous fossil wood is analysed at generic level across the entire supercontinent. Specifically, wood assemblages are analyzed in terms of five climatic zones (summer wet, desert, winter wet, warm temperate, cool temperate) established on the basis of independent data. Results demonstrate that araucarian-like conifer wood was a dominant, cosmopolitan element, whereas other taxa showed a greater degree of provincialism. Indeed, several narrowly endemic morphogenera are recognizable from the data. Finally, comparisons with Laurasian wood assemblages indicate strong parallelism between the vegetation of both hemispheres. © 2004 Elsevier B.V. All rights reserved.
author Ottone, Eduardo Guillermo
author_facet Ottone, Eduardo Guillermo
author_sort Ottone, Eduardo Guillermo
title Biogeographic analysis of Jurassic-Early Cretaceous wood assemblages from Gondwana
title_short Biogeographic analysis of Jurassic-Early Cretaceous wood assemblages from Gondwana
title_full Biogeographic analysis of Jurassic-Early Cretaceous wood assemblages from Gondwana
title_fullStr Biogeographic analysis of Jurassic-Early Cretaceous wood assemblages from Gondwana
title_full_unstemmed Biogeographic analysis of Jurassic-Early Cretaceous wood assemblages from Gondwana
title_sort biogeographic analysis of jurassic-early cretaceous wood assemblages from gondwana
publishDate 2004
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00346667_v129_n3_p141_Philippe
http://hdl.handle.net/20.500.12110/paper_00346667_v129_n3_p141_Philippe
work_keys_str_mv AT ottoneeduardoguillermo biogeographicanalysisofjurassicearlycretaceouswoodassemblagesfromgondwana
_version_ 1840323008549355520

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