Before and after the K/Pg extinction in West Antarctica: New marine fish records from Marambio (Seymour) Island

An ichthyofauna recovered from the L opez de Bertodano Formation at Units 9 (uppermost Maastrichtian) and 10 (lowermost Danian) and the Sobral Formation (Danian), in Marambio (Seymour) Island in the James Ross Basin is described and analyzed herein. A review of previously described taxa based on the...

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Autores principales: Cione, Alberto Luis, Santillana, Sergio, Gouiric Cavalli, Soledad, Acosta Hospitaleche, Carolina Ileana Alicia, Gelfo, Javier Nicolás, López, Guillermo Marcos, Reguero, Marcelo Alfredo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Ciencias Naturales
Antarctic Peninsula
James Ross Basin
Chondrichthyes
Teleostei
Maastrichtian
Danian
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/147537
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-147537
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Antarctic Peninsula
James Ross Basin
Chondrichthyes
Teleostei
Maastrichtian
Danian
spellingShingle Ciencias Naturales
Antarctic Peninsula
James Ross Basin
Chondrichthyes
Teleostei
Maastrichtian
Danian
Cione, Alberto Luis
Santillana, Sergio
Gouiric Cavalli, Soledad
Acosta Hospitaleche, Carolina Ileana Alicia
Gelfo, Javier Nicolás
López, Guillermo Marcos
Reguero, Marcelo Alfredo
Before and after the K/Pg extinction in West Antarctica: New marine fish records from Marambio (Seymour) Island
topic_facet Ciencias Naturales
Antarctic Peninsula
James Ross Basin
Chondrichthyes
Teleostei
Maastrichtian
Danian
description An ichthyofauna recovered from the L opez de Bertodano Formation at Units 9 (uppermost Maastrichtian) and 10 (lowermost Danian) and the Sobral Formation (Danian), in Marambio (Seymour) Island in the James Ross Basin is described and analyzed herein. A review of previously described taxa based on the new material and several new fish records for the L opez de Bertodano Formation is provided, including the youngest record of Enchodus and the first Cretaceous evidence of Pachycormiformes.We also identify the first Paleocene fishes for the continent. The new information and the reinterpretation of previous Cretaceous records show that there was no decline in fish diversity until the CretaceousePaleogene (K/ Pg) boundary in the area and extinction event appears to have been rapid. Finally, we find that the distribution of some chondrichthyans and teleosts in the James Ross Basin appears to be climatically determined.
format Articulo
Articulo
author Cione, Alberto Luis
Santillana, Sergio
Gouiric Cavalli, Soledad
Acosta Hospitaleche, Carolina Ileana Alicia
Gelfo, Javier Nicolás
López, Guillermo Marcos
Reguero, Marcelo Alfredo
author_facet Cione, Alberto Luis
Santillana, Sergio
Gouiric Cavalli, Soledad
Acosta Hospitaleche, Carolina Ileana Alicia
Gelfo, Javier Nicolás
López, Guillermo Marcos
Reguero, Marcelo Alfredo
author_sort Cione, Alberto Luis
title Before and after the K/Pg extinction in West Antarctica: New marine fish records from Marambio (Seymour) Island
title_short Before and after the K/Pg extinction in West Antarctica: New marine fish records from Marambio (Seymour) Island
title_full Before and after the K/Pg extinction in West Antarctica: New marine fish records from Marambio (Seymour) Island
title_fullStr Before and after the K/Pg extinction in West Antarctica: New marine fish records from Marambio (Seymour) Island
title_full_unstemmed Before and after the K/Pg extinction in West Antarctica: New marine fish records from Marambio (Seymour) Island
title_sort before and after the k/pg extinction in west antarctica: new marine fish records from marambio (seymour) island
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/147537
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