Neoselachians and Chimaeriformes (Chondrichthyes) from the latest CretaceousePaleogene of Sierra Baguales, southernmost Chile. Chronostratigraphic, paleobiogeographic and paleoenvironmental implications
Artículo de publicación ISI This paper discusses a well-represented fossil record of cartilaginous fishes (Chondrichthyes) from southern South America. The recovered samples allow the recognition of three assemblages with chronostratigraphic and paleogeographic value: i) typical Maastrichtian sharks...
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Language: | English |
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Online Access: | https://doi.org/10.1016/j.jsames.2013.07.013 https://repositorio.uchile.cl/handle/2250/119675 |
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ftunivchile:oai:repositorio.uchile.cl:2250/119675 2023-05-15T17:34:47+02:00 Neoselachians and Chimaeriformes (Chondrichthyes) from the latest CretaceousePaleogene of Sierra Baguales, southernmost Chile. Chronostratigraphic, paleobiogeographic and paleoenvironmental implications Otero, Rodrigo A. Soto Acuña, Sergio Yury Yáñez, Roberto E. Gutierrez, Nestor M. Le Roux, Jacobus Torres, Teresa Hervé Allamand, Francisco Oyarzún, José Luis 2013 application/pdf https://doi.org/10.1016/j.jsames.2013.07.013 https://repositorio.uchile.cl/handle/2250/119675 en eng Elsevier Journal of South American Earth Sciences 48 (2013) 13e30 doi:10.1016/j.jsames.2013.07.013 https://repositorio.uchile.cl/handle/2250/119675 Attribution-NonCommercial-NoDerivs 3.0 Chile http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ CC-BY-NC-ND Chondrichthyes Artículo de revista 2013 ftunivchile https://doi.org/10.1016/j.jsames.2013.07.013 2023-01-29T00:51:15Z Artículo de publicación ISI This paper discusses a well-represented fossil record of cartilaginous fishes (Chondrichthyes) from southern South America. The recovered samples allow the recognition of three assemblages with chronostratigraphic and paleogeographic value: i) typical Maastrichtian sharks and rays with affinities to eastern Pacific fauna, including the taxa Ischyrhiza chilensis, Serratolamna serrata, Centrophoroides sp. associated to Carcharias sp., and Dasyatidae indet.; ii) a scarce reworked assemblage of PaleoceneeEarly Eocene age including the taxa Otodus obliquus and Megascyliorhinus cooperi; iii) a rich assemblage with reworked taxa of Early to Middle Eocene age, together with autochthonous deposited Middle to Late Eocene taxa with close affinities to paleoichthyofaunas recovered from the North Atlantic, represented by Carcharias ‘hopei’, Odontaspis winkleri, Carcharoides catticus, Macrorhizodus praecursor, Carcharocles auriculatus, Striatolamia sp., Striatolamia macrota, Hexanchus agassizi, Notorhynchus sp., Myliobatis sp., Abdounia sp., Pristiophorus sp., Squatina sp., cf. Rhizoprionodon sp., Ischyodus sp., and one new species, Jaekelotodus bagualensis sp. nov. The studied samples include for the first time taxa with well established chronostratigraphic resolutions as well as taphonomic information that help clarifying the age of the fossil-bearing units. In addition, they provide relevant information about the evolution of the Magallanes (¼Austral) Basin from the Upper Cretaceous to the Paleogene, suggesting a probable connection with the Quiriquina Basin of south-central Chile during the latest Cretaceous. Finally, the studied assemblages indicate a latitudinal pattern of distribution that provides valuable data on the environmental evolution and temperature of southern South America during the Paleogene. Article in Journal/Newspaper North Atlantic Universidad de Chile: Repositorio académico Austral Pacific Magallanes ENVELOPE(-62.933,-62.933,-64.883,-64.883) Isi ENVELOPE(-38.550,-38.550,65.617,65.617) Journal of South American Earth Sciences 48 13 30 |
institution |
Open Polar |
collection |
Universidad de Chile: Repositorio académico |
op_collection_id |
ftunivchile |
language |
English |
topic |
Chondrichthyes |
spellingShingle |
Chondrichthyes Otero, Rodrigo A. Soto Acuña, Sergio Yury Yáñez, Roberto E. Gutierrez, Nestor M. Le Roux, Jacobus Torres, Teresa Hervé Allamand, Francisco Oyarzún, José Luis Neoselachians and Chimaeriformes (Chondrichthyes) from the latest CretaceousePaleogene of Sierra Baguales, southernmost Chile. Chronostratigraphic, paleobiogeographic and paleoenvironmental implications |
topic_facet |
Chondrichthyes |
description |
Artículo de publicación ISI This paper discusses a well-represented fossil record of cartilaginous fishes (Chondrichthyes) from southern South America. The recovered samples allow the recognition of three assemblages with chronostratigraphic and paleogeographic value: i) typical Maastrichtian sharks and rays with affinities to eastern Pacific fauna, including the taxa Ischyrhiza chilensis, Serratolamna serrata, Centrophoroides sp. associated to Carcharias sp., and Dasyatidae indet.; ii) a scarce reworked assemblage of PaleoceneeEarly Eocene age including the taxa Otodus obliquus and Megascyliorhinus cooperi; iii) a rich assemblage with reworked taxa of Early to Middle Eocene age, together with autochthonous deposited Middle to Late Eocene taxa with close affinities to paleoichthyofaunas recovered from the North Atlantic, represented by Carcharias ‘hopei’, Odontaspis winkleri, Carcharoides catticus, Macrorhizodus praecursor, Carcharocles auriculatus, Striatolamia sp., Striatolamia macrota, Hexanchus agassizi, Notorhynchus sp., Myliobatis sp., Abdounia sp., Pristiophorus sp., Squatina sp., cf. Rhizoprionodon sp., Ischyodus sp., and one new species, Jaekelotodus bagualensis sp. nov. The studied samples include for the first time taxa with well established chronostratigraphic resolutions as well as taphonomic information that help clarifying the age of the fossil-bearing units. In addition, they provide relevant information about the evolution of the Magallanes (¼Austral) Basin from the Upper Cretaceous to the Paleogene, suggesting a probable connection with the Quiriquina Basin of south-central Chile during the latest Cretaceous. Finally, the studied assemblages indicate a latitudinal pattern of distribution that provides valuable data on the environmental evolution and temperature of southern South America during the Paleogene. |
format |
Article in Journal/Newspaper |
author |
Otero, Rodrigo A. Soto Acuña, Sergio Yury Yáñez, Roberto E. Gutierrez, Nestor M. Le Roux, Jacobus Torres, Teresa Hervé Allamand, Francisco Oyarzún, José Luis |
author_facet |
Otero, Rodrigo A. Soto Acuña, Sergio Yury Yáñez, Roberto E. Gutierrez, Nestor M. Le Roux, Jacobus Torres, Teresa Hervé Allamand, Francisco Oyarzún, José Luis |
author_sort |
Otero, Rodrigo A. |
title |
Neoselachians and Chimaeriformes (Chondrichthyes) from the latest CretaceousePaleogene of Sierra Baguales, southernmost Chile. Chronostratigraphic, paleobiogeographic and paleoenvironmental implications |
title_short |
Neoselachians and Chimaeriformes (Chondrichthyes) from the latest CretaceousePaleogene of Sierra Baguales, southernmost Chile. Chronostratigraphic, paleobiogeographic and paleoenvironmental implications |
title_full |
Neoselachians and Chimaeriformes (Chondrichthyes) from the latest CretaceousePaleogene of Sierra Baguales, southernmost Chile. Chronostratigraphic, paleobiogeographic and paleoenvironmental implications |
title_fullStr |
Neoselachians and Chimaeriformes (Chondrichthyes) from the latest CretaceousePaleogene of Sierra Baguales, southernmost Chile. Chronostratigraphic, paleobiogeographic and paleoenvironmental implications |
title_full_unstemmed |
Neoselachians and Chimaeriformes (Chondrichthyes) from the latest CretaceousePaleogene of Sierra Baguales, southernmost Chile. Chronostratigraphic, paleobiogeographic and paleoenvironmental implications |
title_sort |
neoselachians and chimaeriformes (chondrichthyes) from the latest cretaceousepaleogene of sierra baguales, southernmost chile. chronostratigraphic, paleobiogeographic and paleoenvironmental implications |
publisher |
Elsevier |
publishDate |
2013 |
url |
https://doi.org/10.1016/j.jsames.2013.07.013 https://repositorio.uchile.cl/handle/2250/119675 |
long_lat |
ENVELOPE(-62.933,-62.933,-64.883,-64.883) ENVELOPE(-38.550,-38.550,65.617,65.617) |
geographic |
Austral Pacific Magallanes Isi |
geographic_facet |
Austral Pacific Magallanes Isi |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Journal of South American Earth Sciences 48 (2013) 13e30 doi:10.1016/j.jsames.2013.07.013 https://repositorio.uchile.cl/handle/2250/119675 |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 Chile http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.jsames.2013.07.013 |
container_title |
Journal of South American Earth Sciences |
container_volume |
48 |
container_start_page |
13 |
op_container_end_page |
30 |
_version_ |
1766133724192178176 |