An Early Miocene coastal lagoon plant community from central Patagonia

Autores
Panti, Carolina; Cuitiño, José Ignacio; Tapia, Mariano Jesús; Pujana, Roberto Roman; Palazzesi, Luis; Barreda, Viviana Dora
Año de publicación
2023
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
The lower Gaiman Fm. (20.5 Ma) cropping out at Isla Escondida (northeast Chubut) represents a land-sea transition depositional setting. Here, we present the plant fossil remains with preserved cuticles and palynomorphs (fungi, spores and pollen grains) recovered from these sediments. The megafossil assemblage includes several ribbon-like long parallel-veined leaves, with more or less perpendicular connection between the veins and sheathing base. They were assigned to the Alismatales, tentatively to the family Hydrocharitaceae due to the presence of paracytic stomata. It includes seagrasses with hydrophilous pollination that may have grown in confined or low-energy coastal lagoons. Among palynomorphs, we found several Gondwanan lineages including Nothofagaceae, Podocarpaceae, Araucariaceae, and ferns of the Lophosoriaceae. We also recovered specimens assigned to palms (Arecipites otagoensis (Couper) Mildenhall & Pocknall 1989), caesalpinoid (Margocolporites vanwijhei Germeraad et al. 1968), and mimosoid legumes (Margocolporites tenuireticulatus Barreda 1997), and Rubiaceae Gardenia (Canthiumidites bellus (Stover & Partridge) Mildenhall & Pocknall 1989). The typical coastal elements commonly found in salt-marshes are also detected such as Amaranthaceae (Chenopodipollis chenopodioceoides (Martin) Truswell et al. 1985), Poaceae (Graminidites sp.), Asteraceae Nassauvieae (Huanillipollis cabrerae Barreda & Palazzesi 2008), and Convolvulaceae Cressa (Tricolpites trioblatus Mildenhall & Pocknall 1989). The overall assemblage indicates a rich marginal-marine community developed under a frost-free climate, in agreement with previous sedimentological and paleontological studies that include mollusca, bryozoa and diatoms.
Fil: Panti, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Cuitiño, José Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; Argentina
Fil: Tapia, Mariano Jesús. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
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: Palazzesi, Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Barreda, Viviana Dora. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
VII Simposio del Mio-Pleistoceno del Centro Norte de Argentina
La Rioja
Argentina
Asociación Paleontológica Argentina
Materia
MIOCENE
FOSSIL FLORA
PATAGONIA
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/275741
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling An Early Miocene coastal lagoon plant community from central PatagoniaPanti, CarolinaCuitiño, José IgnacioTapia, Mariano JesúsPujana, Roberto RomanPalazzesi, LuisBarreda, Viviana DoraMIOCENEFOSSIL FLORAPATAGONIAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The lower Gaiman Fm. (20.5 Ma) cropping out at Isla Escondida (northeast Chubut) represents a land-sea transition depositional setting. Here, we present the plant fossil remains with preserved cuticles and palynomorphs (fungi, spores and pollen grains) recovered from these sediments. The megafossil assemblage includes several ribbon-like long parallel-veined leaves, with more or less perpendicular connection between the veins and sheathing base. They were assigned to the Alismatales, tentatively to the family Hydrocharitaceae due to the presence of paracytic stomata. It includes seagrasses with hydrophilous pollination that may have grown in confined or low-energy coastal lagoons. Among palynomorphs, we found several Gondwanan lineages including Nothofagaceae, Podocarpaceae, Araucariaceae, and ferns of the Lophosoriaceae. We also recovered specimens assigned to palms (Arecipites otagoensis (Couper) Mildenhall & Pocknall 1989), caesalpinoid (Margocolporites vanwijhei Germeraad et al. 1968), and mimosoid legumes (Margocolporites tenuireticulatus Barreda 1997), and Rubiaceae Gardenia (Canthiumidites bellus (Stover & Partridge) Mildenhall & Pocknall 1989). The typical coastal elements commonly found in salt-marshes are also detected such as Amaranthaceae (Chenopodipollis chenopodioceoides (Martin) Truswell et al. 1985), Poaceae (Graminidites sp.), Asteraceae Nassauvieae (Huanillipollis cabrerae Barreda & Palazzesi 2008), and Convolvulaceae Cressa (Tricolpites trioblatus Mildenhall & Pocknall 1989). The overall assemblage indicates a rich marginal-marine community developed under a frost-free climate, in agreement with previous sedimentological and paleontological studies that include mollusca, bryozoa and diatoms.Fil: Panti, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Cuitiño, José Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; ArgentinaFil: Tapia, Mariano Jesús. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Pujana, Roberto Roman. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Palazzesi, Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Barreda, Viviana Dora. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaVII Simposio del Mio-Pleistoceno del Centro Norte de ArgentinaLa RiojaArgentinaAsociación Paleontológica ArgentinaAsociación Paleontológica Argentina2023info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectSimposioJournalhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/275741An Early Miocene coastal lagoon plant community from central Patagonia; VII Simposio del Mio-Pleistoceno del Centro Norte de Argentina; La Rioja; Argentina; 2023; 33-332469-0228CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://peapaleontologica.org.ar/index.php/peapa/article/view/495info:eu-repo/semantics/altIdentifier/doi/10.5710/PEAPA.06.03.2024.495Nacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-12-23T13:53:28Zoai:ri.conicet.gov.ar:11336/275741instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-12-23 13:53:29.03CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv An Early Miocene coastal lagoon plant community from central Patagonia
title An Early Miocene coastal lagoon plant community from central Patagonia
spellingShingle An Early Miocene coastal lagoon plant community from central Patagonia
Panti, Carolina
MIOCENE
FOSSIL FLORA
PATAGONIA
title_short An Early Miocene coastal lagoon plant community from central Patagonia
title_full An Early Miocene coastal lagoon plant community from central Patagonia
title_fullStr An Early Miocene coastal lagoon plant community from central Patagonia
title_full_unstemmed An Early Miocene coastal lagoon plant community from central Patagonia
title_sort An Early Miocene coastal lagoon plant community from central Patagonia
dc.creator.none.fl_str_mv Panti, Carolina
Cuitiño, José Ignacio
Tapia, Mariano Jesús
Pujana, Roberto Roman
Palazzesi, Luis
Barreda, Viviana Dora
author Panti, Carolina
author_facet Panti, Carolina
Cuitiño, José Ignacio
Tapia, Mariano Jesús
Pujana, Roberto Roman
Palazzesi, Luis
Barreda, Viviana Dora
author_role author
author2 Cuitiño, José Ignacio
Tapia, Mariano Jesús
Pujana, Roberto Roman
Palazzesi, Luis
Barreda, Viviana Dora
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv MIOCENE
FOSSIL FLORA
PATAGONIA
topic MIOCENE
FOSSIL FLORA
PATAGONIA
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The lower Gaiman Fm. (20.5 Ma) cropping out at Isla Escondida (northeast Chubut) represents a land-sea transition depositional setting. Here, we present the plant fossil remains with preserved cuticles and palynomorphs (fungi, spores and pollen grains) recovered from these sediments. The megafossil assemblage includes several ribbon-like long parallel-veined leaves, with more or less perpendicular connection between the veins and sheathing base. They were assigned to the Alismatales, tentatively to the family Hydrocharitaceae due to the presence of paracytic stomata. It includes seagrasses with hydrophilous pollination that may have grown in confined or low-energy coastal lagoons. Among palynomorphs, we found several Gondwanan lineages including Nothofagaceae, Podocarpaceae, Araucariaceae, and ferns of the Lophosoriaceae. We also recovered specimens assigned to palms (Arecipites otagoensis (Couper) Mildenhall & Pocknall 1989), caesalpinoid (Margocolporites vanwijhei Germeraad et al. 1968), and mimosoid legumes (Margocolporites tenuireticulatus Barreda 1997), and Rubiaceae Gardenia (Canthiumidites bellus (Stover & Partridge) Mildenhall & Pocknall 1989). The typical coastal elements commonly found in salt-marshes are also detected such as Amaranthaceae (Chenopodipollis chenopodioceoides (Martin) Truswell et al. 1985), Poaceae (Graminidites sp.), Asteraceae Nassauvieae (Huanillipollis cabrerae Barreda & Palazzesi 2008), and Convolvulaceae Cressa (Tricolpites trioblatus Mildenhall & Pocknall 1989). The overall assemblage indicates a rich marginal-marine community developed under a frost-free climate, in agreement with previous sedimentological and paleontological studies that include mollusca, bryozoa and diatoms.
Fil: Panti, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Cuitiño, José Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; Argentina
Fil: Tapia, Mariano Jesús. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
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: Palazzesi, Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Barreda, Viviana Dora. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
VII Simposio del Mio-Pleistoceno del Centro Norte de Argentina
La Rioja
Argentina
Asociación Paleontológica Argentina
description The lower Gaiman Fm. (20.5 Ma) cropping out at Isla Escondida (northeast Chubut) represents a land-sea transition depositional setting. Here, we present the plant fossil remains with preserved cuticles and palynomorphs (fungi, spores and pollen grains) recovered from these sediments. The megafossil assemblage includes several ribbon-like long parallel-veined leaves, with more or less perpendicular connection between the veins and sheathing base. They were assigned to the Alismatales, tentatively to the family Hydrocharitaceae due to the presence of paracytic stomata. It includes seagrasses with hydrophilous pollination that may have grown in confined or low-energy coastal lagoons. Among palynomorphs, we found several Gondwanan lineages including Nothofagaceae, Podocarpaceae, Araucariaceae, and ferns of the Lophosoriaceae. We also recovered specimens assigned to palms (Arecipites otagoensis (Couper) Mildenhall & Pocknall 1989), caesalpinoid (Margocolporites vanwijhei Germeraad et al. 1968), and mimosoid legumes (Margocolporites tenuireticulatus Barreda 1997), and Rubiaceae Gardenia (Canthiumidites bellus (Stover & Partridge) Mildenhall & Pocknall 1989). The typical coastal elements commonly found in salt-marshes are also detected such as Amaranthaceae (Chenopodipollis chenopodioceoides (Martin) Truswell et al. 1985), Poaceae (Graminidites sp.), Asteraceae Nassauvieae (Huanillipollis cabrerae Barreda & Palazzesi 2008), and Convolvulaceae Cressa (Tricolpites trioblatus Mildenhall & Pocknall 1989). The overall assemblage indicates a rich marginal-marine community developed under a frost-free climate, in agreement with previous sedimentological and paleontological studies that include mollusca, bryozoa and diatoms.
publishDate 2023
dc.date.none.fl_str_mv 2023
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Simposio
Journal
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/275741
An Early Miocene coastal lagoon plant community from central Patagonia; VII Simposio del Mio-Pleistoceno del Centro Norte de Argentina; La Rioja; Argentina; 2023; 33-33
2469-0228
CONICET Digital
CONICET
url http://hdl.handle.net/11336/275741
identifier_str_mv An Early Miocene coastal lagoon plant community from central Patagonia; VII Simposio del Mio-Pleistoceno del Centro Norte de Argentina; La Rioja; Argentina; 2023; 33-33
2469-0228
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://peapaleontologica.org.ar/index.php/peapa/article/view/495
info:eu-repo/semantics/altIdentifier/doi/10.5710/PEAPA.06.03.2024.495
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nd/2.5/ar/
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dc.coverage.none.fl_str_mv Nacional
dc.publisher.none.fl_str_mv Asociación Paleontológica Argentina
publisher.none.fl_str_mv Asociación Paleontológica Argentina
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
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instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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