Salvinialean megaspores in the Late Cretaceous of southern Patagonia, Argentina

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 p...

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Detalles Bibliográficos
Autores principales: Santamarina, Patricio Emmanuel, Barreda, Viviana Dora, Iglesias, Ari, Varela, Augusto Nicolás
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Paleontología
Salviniales
Hydropteridales
Arcellites
Megaspores
Cenomanian
South America
Argentina
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/97418
https://ri.conicet.gov.ar/11336/85086
http://www.app.pan.pl/article/item/app004912018.html
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-97418
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Paleontología
Salviniales
Hydropteridales
Arcellites
Megaspores
Cenomanian
South America
Argentina
spellingShingle Paleontología
Salviniales
Hydropteridales
Arcellites
Megaspores
Cenomanian
South America
Argentina
Santamarina, Patricio Emmanuel
Barreda, Viviana Dora
Iglesias, Ari
Varela, Augusto Nicolás
Salvinialean megaspores in the Late Cretaceous of southern Patagonia, Argentina
topic_facet Paleontología
Salviniales
Hydropteridales
Arcellites
Megaspores
Cenomanian
South America
Argentina
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.
format Articulo
Articulo
author Santamarina, Patricio Emmanuel
Barreda, Viviana Dora
Iglesias, Ari
Varela, Augusto Nicolás
author_facet Santamarina, Patricio Emmanuel
Barreda, Viviana Dora
Iglesias, Ari
Varela, Augusto Nicolás
author_sort Santamarina, Patricio Emmanuel
title Salvinialean megaspores in the Late Cretaceous of southern Patagonia, 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
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/97418
https://ri.conicet.gov.ar/11336/85086
http://www.app.pan.pl/article/item/app004912018.html
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AT iglesiasari salvinialeanmegasporesinthelatecretaceousofsouthernpatagoniaargentina
AT varelaaugustonicolas salvinialeanmegasporesinthelatecretaceousofsouthernpatagoniaargentina
bdutipo_str Repositorios
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