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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/97418
Ver los metadatos del registro completo
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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:UNLP2025-09-29T11:20:30Zoai: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:13292025-09-29 11:20:31.186SEDICI (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 |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/97418 |
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http://sedici.unlp.edu.ar/handle/10915/97418 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
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info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
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openAccess |
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http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
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