Megaflora (woods, culms, and palms) from the Ituzaingó Formation, Paraná river basin, Argentina

The Ituzaingó Formation is a fluvial deposit of the Argentine Littoral region with a important palaeobotanical record. This work synthesizes current knowledge of its permineralized megaflora, including woods, culms, and palms, with emphasis on the taxonomic diversity and its palaeoenviromental and b...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Franco, María Jimena, Brea, Mariana, Camila, Martinez Martinez, M. Belen, Thalmeier
Formato: Artículo revista
Lenguaje:Español
Publicado: Facultad de Ciencias Exactas y Naturales y Agrimensura 2025
Materias:
Paleobotánica
Xilema secundario
Ejes caulinares
Mioceno-Pleistoceno
Litoral argentino
Paleobotany
Secondary xylem
Caulinar axes
Mio-Pleistocene
Argentine Littoral
Acceso en línea:https://revistas.unne.edu.ar/index.php/fce/article/view/8827
Aporte de:
Revistas UNNE - Universidad Nacional del Noroeste (UNNE) de Universidad Nacional del Nordeste
id I48-R154-article-8827
record_format ojs
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-154
container_title_str Revistas UNNE - Universidad Nacional del Noroeste (UNNE)
language Español
format Artículo revista
topic Paleobotánica
Xilema secundario
Ejes caulinares
Mioceno-Pleistoceno
Litoral argentino
Paleobotany
Secondary xylem
Caulinar axes
Mio-Pleistocene
Argentine Littoral
spellingShingle Paleobotánica
Xilema secundario
Ejes caulinares
Mioceno-Pleistoceno
Litoral argentino
Paleobotany
Secondary xylem
Caulinar axes
Mio-Pleistocene
Argentine Littoral
Franco, María Jimena
Brea, Mariana
Camila, Martinez Martinez
M. Belen, Thalmeier
Megaflora (woods, culms, and palms) from the Ituzaingó Formation, Paraná river basin, Argentina
topic_facet Paleobotánica
Xilema secundario
Ejes caulinares
Mioceno-Pleistoceno
Litoral argentino
Paleobotany
Secondary xylem
Caulinar axes
Mio-Pleistocene
Argentine Littoral
author Franco, María Jimena
Brea, Mariana
Camila, Martinez Martinez
M. Belen, Thalmeier
author_facet Franco, María Jimena
Brea, Mariana
Camila, Martinez Martinez
M. Belen, Thalmeier
author_sort Franco, María Jimena
title Megaflora (woods, culms, and palms) from the Ituzaingó Formation, Paraná river basin, Argentina
title_short Megaflora (woods, culms, and palms) from the Ituzaingó Formation, Paraná river basin, Argentina
title_full Megaflora (woods, culms, and palms) from the Ituzaingó Formation, Paraná river basin, Argentina
title_fullStr Megaflora (woods, culms, and palms) from the Ituzaingó Formation, Paraná river basin, Argentina
title_full_unstemmed Megaflora (woods, culms, and palms) from the Ituzaingó Formation, Paraná river basin, Argentina
title_sort megaflora (woods, culms, and palms) from the ituzaingó formation, paraná river basin, argentina
description The Ituzaingó Formation is a fluvial deposit of the Argentine Littoral region with a important palaeobotanical record. This work synthesizes current knowledge of its permineralized megaflora, including woods, culms, and palms, with emphasis on the taxonomic diversity and its palaeoenviromental and biogeographic context. This geological unit has been studied since the XIX century and has provided key fossils for palaeoecological and palaeoclimatic reconstructions. There are 73 fossil specimens assigned to 13 families, with the Anacardiaceae, Fabaceae, Moraceae, Lauraceae and Proteaceae being the most frequent. The fossil woods come from the provinces of Entre Ríos, Corrientes and Santa Fe. In Entre Ríos, specimens are preserved by silicification, whereas those from Corrientes and Santa Fe are mainly preserved with amorphous hydroxyls of Fe and Ca and other trace elements, wich affected the anatomical features and complicated taxonomic identification. The anatomical studies of these fossil woods indicate the coexistence of species adapted to different hydric regimes, from riparian humid forest to seasonally dry forest. These data support the hypothesis that Neotropical Seasonally Dry Forests had a wider distribution in South America in the past. Future research, incorporating new radiometric dating and detailed sedimentological analyses will help refine the chronological and environmental context of these deposits. Additionally, interdisciplinary approaches that integrate traditional taxonomy with paleoecological, paleoclimatic, and paleoenvironmental studies will contribute to a deeper understanding of these ecosystems and their evolution in response to climatic changes during the Late Cenozoic.
publisher Facultad de Ciencias Exactas y Naturales y Agrimensura
publishDate 2025
url https://revistas.unne.edu.ar/index.php/fce/article/view/8827
work_keys_str_mv AT francomariajimena megaflorawoodsculmsandpalmsfromtheituzaingoformationparanariverbasinargentina
AT breamariana megaflorawoodsculmsandpalmsfromtheituzaingoformationparanariverbasinargentina
AT camilamartinezmartinez megaflorawoodsculmsandpalmsfromtheituzaingoformationparanariverbasinargentina
AT mbelenthalmeier megaflorawoodsculmsandpalmsfromtheituzaingoformationparanariverbasinargentina
AT francomariajimena lamegafloralenoscanasypalmerasdelaformacionituzaingocuencadelrioparanaargentina
AT breamariana lamegafloralenoscanasypalmerasdelaformacionituzaingocuencadelrioparanaargentina
AT camilamartinezmartinez lamegafloralenoscanasypalmerasdelaformacionituzaingocuencadelrioparanaargentina
AT mbelenthalmeier lamegafloralenoscanasypalmerasdelaformacionituzaingocuencadelrioparanaargentina
first_indexed 2025-12-17T05:00:22Z
last_indexed 2025-12-17T05:00:22Z
_version_ 1851730294375186432
spelling I48-R154-article-88272025-12-10T15:00:57Z Megaflora (woods, culms, and palms) from the Ituzaingó Formation, Paraná river basin, Argentina La megaflora (leños, cañas y palmeras) de la Formación Ituzaingó, cuenca del río Paraná, Argentina Franco, María Jimena Brea, Mariana Camila, Martinez Martinez M. Belen, Thalmeier Paleobotánica Xilema secundario Ejes caulinares Mioceno-Pleistoceno Litoral argentino Paleobotany Secondary xylem Caulinar axes Mio-Pleistocene Argentine Littoral The Ituzaingó Formation is a fluvial deposit of the Argentine Littoral region with a important palaeobotanical record. This work synthesizes current knowledge of its permineralized megaflora, including woods, culms, and palms, with emphasis on the taxonomic diversity and its palaeoenviromental and biogeographic context. This geological unit has been studied since the XIX century and has provided key fossils for palaeoecological and palaeoclimatic reconstructions. There are 73 fossil specimens assigned to 13 families, with the Anacardiaceae, Fabaceae, Moraceae, Lauraceae and Proteaceae being the most frequent. The fossil woods come from the provinces of Entre Ríos, Corrientes and Santa Fe. In Entre Ríos, specimens are preserved by silicification, whereas those from Corrientes and Santa Fe are mainly preserved with amorphous hydroxyls of Fe and Ca and other trace elements, wich affected the anatomical features and complicated taxonomic identification. The anatomical studies of these fossil woods indicate the coexistence of species adapted to different hydric regimes, from riparian humid forest to seasonally dry forest. These data support the hypothesis that Neotropical Seasonally Dry Forests had a wider distribution in South America in the past. Future research, incorporating new radiometric dating and detailed sedimentological analyses will help refine the chronological and environmental context of these deposits. Additionally, interdisciplinary approaches that integrate traditional taxonomy with paleoecological, paleoclimatic, and paleoenvironmental studies will contribute to a deeper understanding of these ecosystems and their evolution in response to climatic changes during the Late Cenozoic. La Formación Ituzaingó es un depósito fluvial de la región del Litoral argentino que alberga un importante registro paleobotánico. Este trabajo sintetiza el conocimiento actual sobre la megaflora permineralizada de la formación, incluyendo leños, cañas y palmeras, con énfasis en su diversidad taxonómica y su contexto paleoambiental y biogeográfico. Esta unidad, estudiada desde el siglo XIX, ha proporcionado fósiles clave para reconstrucciones paleoecológicas y paleoclimáticas. Se han identificado 73 ejemplares fósiles asignados a 13 familias, siendo Anacardiaceae, Fabaceae, Moraceae, Lauraceae y Proteaceae las más frecuentes. Los leños fósiles provienen de Entre Ríos, Corrientes y Santa Fe. Los ejemplares de Entre Ríos están preservados por silicificación, mientras que en Corrientes y Santa Fe predominan preservaciones con hidróxidos amorfos de Fe y Ca, junto con otros elementos traza, lo que ha afectado la preservación de sus caracteres anatómicos y dificulta su identificación taxonómica. Los análisis anatómicos de estos leños fósiles evidencian la coexistencia de especies adaptadas a distintos regímenes hídricos, desde bosques húmedos ribereños, bosques secos estacionales hasta bosques secos. Estos datos refuerzan la hipótesis de que los Bosques Secos Estacionales Neotropicales tuvieron en el pasado una distribución más extensa en Sudamérica. Futuras investigaciones, que integren nuevas dataciones radiométricas y análisis sedimentológicos permitirán precisar el marco temporal y ambiental de estos depósitos. Además, enfoques interdisciplinarios que integren la taxonomía tradicional con estudios paleoecológicos, paleoclimáticos y paleoambientales contribuirán a una reconstrucción más precisa de estos ecosistemas y su evolución frente a los cambios climáticos del Cenozoico tardío. Facultad de Ciencias Exactas y Naturales y Agrimensura 2025-12-10 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://revistas.unne.edu.ar/index.php/fce/article/view/8827 10.30972/fac.3528827 FACENA; Vol. 35 Núm. 2 (2025); 44-89 1851-507X 0325-4216 spa https://revistas.unne.edu.ar/index.php/fce/article/view/8827/8566 https://revistas.unne.edu.ar/index.php/fce/article/view/8827/8567 Derechos de autor 2025 María Jimena Franco, Mariana Brea, Martinez Martinez Camila, Thalmeier M. Belen http://creativecommons.org/licenses/by-nc/4.0

Ejemplares similares