Salvinialean megaspores in the Late Cretaceous of southern Patagonia, Argentina

Autores
Santamarina, Patricio Emmanuel; Barreda, Viviana Dora; Iglesias, Ari; Varela, Augusto Nicolás
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We report here two megaspores species related to the aquatic ferns of the Order Salviniales from the Late Cretaceous Mata Amarilla Formation (Austral Basin), southern Santa Cruz Province, Argentina. They were assigned to the species Arcellites disciformis and Balmeisporites cf. B. holodictyus. The presence of A. disciformis, in particular, is significant not only because it represents the first record for the Southern Hemisphere, indicating a bi-hemispheric distribution for the species, but it also increases the diversity of this genus in Patagonia. The new record enlarge the importance of water ferns in the Late Cretaceous landscapes of southern South America by adding the presence of a new species. The common occurrences of Arcellites and Balmeisporites, whether in shallow, fresh or brackish water facies, support a local aquatic paleoenvironment for the Mata Amarilla Formation, as was also suggested by the sedimentological evidence. They also allow referring the lower and middle levels of the Mata Amarilla Formation to the Chronostratigraphic Zone M3 (Albian-Cenomanian) defined for the cretaceous of Patagonia on the bases of its megaspore content.
Centro de Investigaciones Geológicas
Materia
Paleontología
Salviniales
Hydropteridales
Arcellites
Megaspores
Cenomanian
South America
Argentina
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/97418
Acceder
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repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Salvinialean megaspores in the Late Cretaceous of southern Patagonia, ArgentinaSantamarina, Patricio EmmanuelBarreda, Viviana DoraIglesias, AriVarela, Augusto NicolásPaleontologíaSalvinialesHydropteridalesArcellitesMegasporesCenomanianSouth AmericaArgentinaWe report here two megaspores species related to the aquatic ferns of the Order Salviniales from the Late Cretaceous Mata Amarilla Formation (Austral Basin), southern Santa Cruz Province, Argentina. They were assigned to the species Arcellites disciformis and Balmeisporites cf. B. holodictyus. The presence of A. disciformis, in particular, is significant not only because it represents the first record for the Southern Hemisphere, indicating a bi-hemispheric distribution for the species, but it also increases the diversity of this genus in Patagonia. The new record enlarge the importance of water ferns in the Late Cretaceous landscapes of southern South America by adding the presence of a new species. The common occurrences of Arcellites and Balmeisporites, whether in shallow, fresh or brackish water facies, support a local aquatic paleoenvironment for the Mata Amarilla Formation, as was also suggested by the sedimentological evidence. They also allow referring the lower and middle levels of the Mata Amarilla Formation to the Chronostratigraphic Zone M3 (Albian-Cenomanian) defined for the cretaceous of Patagonia on the bases of its megaspore content.Centro de Investigaciones Geológicas2018-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf607-616http://sedici.unlp.edu.ar/handle/10915/97418enginfo:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/85086info:eu-repo/semantics/altIdentifier/url/http://www.app.pan.pl/article/item/app004912018.htmlinfo:eu-repo/semantics/altIdentifier/issn/1732-2421info:eu-repo/semantics/altIdentifier/doi/10.4202/app.00491.2018info:eu-repo/semantics/altIdentifier/hdl/11336/85086info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T17:01:21Zoai:sedici.unlp.edu.ar:10915/97418Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:01:21.499SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Salvinialean megaspores in the Late Cretaceous of southern Patagonia, Argentina
title Salvinialean megaspores in the Late Cretaceous of southern Patagonia, Argentina
spellingShingle Salvinialean megaspores in the Late Cretaceous of southern Patagonia, Argentina
Santamarina, Patricio Emmanuel
Paleontología
Salviniales
Hydropteridales
Arcellites
Megaspores
Cenomanian
South America
Argentina
title_short Salvinialean megaspores in the Late Cretaceous of southern Patagonia, Argentina
title_full Salvinialean megaspores in the Late Cretaceous of southern Patagonia, Argentina
title_fullStr Salvinialean megaspores in the Late Cretaceous of southern Patagonia, Argentina
title_full_unstemmed Salvinialean megaspores in the Late Cretaceous of southern Patagonia, Argentina
title_sort Salvinialean megaspores in the Late Cretaceous of southern Patagonia, Argentina
dc.creator.none.fl_str_mv Santamarina, Patricio Emmanuel
Barreda, Viviana Dora
Iglesias, Ari
Varela, Augusto Nicolás
author Santamarina, Patricio Emmanuel
author_facet Santamarina, Patricio Emmanuel
Barreda, Viviana Dora
Iglesias, Ari
Varela, Augusto Nicolás
author_role author
author2 Barreda, Viviana Dora
Iglesias, Ari
Varela, Augusto Nicolás
author2_role author
author
author
dc.subject.none.fl_str_mv Paleontología
Salviniales
Hydropteridales
Arcellites
Megaspores
Cenomanian
South America
Argentina
topic Paleontología
Salviniales
Hydropteridales
Arcellites
Megaspores
Cenomanian
South America
Argentina
dc.description.none.fl_txt_mv We report here two megaspores species related to the aquatic ferns of the Order Salviniales from the Late Cretaceous Mata Amarilla Formation (Austral Basin), southern Santa Cruz Province, Argentina. They were assigned to the species Arcellites disciformis and Balmeisporites cf. B. holodictyus. The presence of A. disciformis, in particular, is significant not only because it represents the first record for the Southern Hemisphere, indicating a bi-hemispheric distribution for the species, but it also increases the diversity of this genus in Patagonia. The new record enlarge the importance of water ferns in the Late Cretaceous landscapes of southern South America by adding the presence of a new species. The common occurrences of Arcellites and Balmeisporites, whether in shallow, fresh or brackish water facies, support a local aquatic paleoenvironment for the Mata Amarilla Formation, as was also suggested by the sedimentological evidence. They also allow referring the lower and middle levels of the Mata Amarilla Formation to the Chronostratigraphic Zone M3 (Albian-Cenomanian) defined for the cretaceous of Patagonia on the bases of its megaspore content.
Centro de Investigaciones Geológicas
description We report here two megaspores species related to the aquatic ferns of the Order Salviniales from the Late Cretaceous Mata Amarilla Formation (Austral Basin), southern Santa Cruz Province, Argentina. They were assigned to the species Arcellites disciformis and Balmeisporites cf. B. holodictyus. The presence of A. disciformis, in particular, is significant not only because it represents the first record for the Southern Hemisphere, indicating a bi-hemispheric distribution for the species, but it also increases the diversity of this genus in Patagonia. The new record enlarge the importance of water ferns in the Late Cretaceous landscapes of southern South America by adding the presence of a new species. The common occurrences of Arcellites and Balmeisporites, whether in shallow, fresh or brackish water facies, support a local aquatic paleoenvironment for the Mata Amarilla Formation, as was also suggested by the sedimentological evidence. They also allow referring the lower and middle levels of the Mata Amarilla Formation to the Chronostratigraphic Zone M3 (Albian-Cenomanian) defined for the cretaceous of Patagonia on the bases of its megaspore content.
publishDate 2018
dc.date.none.fl_str_mv 2018-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/97418
url http://sedici.unlp.edu.ar/handle/10915/97418
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/85086
info:eu-repo/semantics/altIdentifier/url/http://www.app.pan.pl/article/item/app004912018.html
info:eu-repo/semantics/altIdentifier/issn/1732-2421
info:eu-repo/semantics/altIdentifier/doi/10.4202/app.00491.2018
info:eu-repo/semantics/altIdentifier/hdl/11336/85086
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
607-616
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 12.982451

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