THE SOUTHERNMOST OCCURRENCE OF BRACHYCARCHARIAS (LAMNIFORMES, ODONTASPIDIDAE) FROM THE EOCENE OF ANTARCTICA PROVIDES NEW INFORMATION ABOUT THE PALEOBIOGEOGRAPHY AND PALEOBIOLOGY OF PALEOGENE SAND TIGER SHARKS
The first record of one of the most common and widespread Paleogene selachians, the sand tiger shark Brachycarcharias, in the Ypresian strata of the La Meseta Formation, Seymour Island, Antarctica, is provided herein. Selachians from the early Eocene horizons of this deposit represent the southernmo...
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Università degli Studi di Milano
2018
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ftunivmilriv:oai:ojs.riviste.unimi.it:article/9985 2023-05-15T13:44:04+02:00 THE SOUTHERNMOST OCCURRENCE OF BRACHYCARCHARIAS (LAMNIFORMES, ODONTASPIDIDAE) FROM THE EOCENE OF ANTARCTICA PROVIDES NEW INFORMATION ABOUT THE PALEOBIOGEOGRAPHY AND PALEOBIOLOGY OF PALEOGENE SAND TIGER SHARKS MARRAMÀ, GIUSEPPE ENGELBRECHT, ANDREA MÖRS, THOMAS REGUERO, MARCELO A. KRIWET, JÜRGEN 2018-04-18 application/pdf https://riviste.unimi.it/index.php/RIPS/article/view/9985 https://doi.org/10.13130/2039-4942/9985 eng eng Università degli Studi di Milano https://riviste.unimi.it/index.php/RIPS/article/view/9985/9425 https://riviste.unimi.it/index.php/RIPS/article/view/9985 doi:10.13130/2039-4942/9985 Copyright (c) 2018 GIUSEPPE MARRAMÀ, ANDREA ENGELBRECHT, THOMAS MÖRS, MARCELO A. REGUERO, JÜRGEN KRIWET RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA Vol. 124 No. 2 (2018) Rivista italiana di Paleontologia e Stratigrafia; V. 124 N. 2 (2018) 2039-4942 0035-6883 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2018 ftunivmilriv https://doi.org/10.13130/2039-4942/9985 2022-02-21T07:13:29Z The first record of one of the most common and widespread Paleogene selachians, the sand tiger shark Brachycarcharias, in the Ypresian strata of the La Meseta Formation, Seymour Island, Antarctica, is provided herein. Selachians from the early Eocene horizons of this deposit represent the southernmost Paleogene occurrences in the fossil record, and are represented by isolated teeth belonging to orectolobiforms, lamniforms, carcharhiniforms, squatiniforms and pristiophoriforms. The combination of dental characters of the 49 isolated teeth collected from the horizons TELMs 2, 4 and 5 supports their assignment to the odontaspidid Brachycarcharias lerichei (Casier, 1946), a lamniform species widely spread across the Northern Hemisphere during the early Paleogene. The unambiguous first report of this lamniform shark in the Southern Hemisphere in the Eocene of the La Meseta Formation improves our knowledge concerning the diversity and paleobiology of the cartilaginous fishes of this deposit, and provides new insights about the biotic turnovers that involved the high trophic levels of the marine settings after the end-Cretaceous extinction and before the establishment of the modern marine ecosystems. Article in Journal/Newspaper Antarc* Antarctica Seymour Island University of Milan: Riviste UNIMI Seymour ENVELOPE(-56.767,-56.767,-64.283,-64.283) Seymour Island ENVELOPE(-56.750,-56.750,-64.283,-64.283) |
institution |
Open Polar |
collection |
University of Milan: Riviste UNIMI |
op_collection_id |
ftunivmilriv |
language |
English |
description |
The first record of one of the most common and widespread Paleogene selachians, the sand tiger shark Brachycarcharias, in the Ypresian strata of the La Meseta Formation, Seymour Island, Antarctica, is provided herein. Selachians from the early Eocene horizons of this deposit represent the southernmost Paleogene occurrences in the fossil record, and are represented by isolated teeth belonging to orectolobiforms, lamniforms, carcharhiniforms, squatiniforms and pristiophoriforms. The combination of dental characters of the 49 isolated teeth collected from the horizons TELMs 2, 4 and 5 supports their assignment to the odontaspidid Brachycarcharias lerichei (Casier, 1946), a lamniform species widely spread across the Northern Hemisphere during the early Paleogene. The unambiguous first report of this lamniform shark in the Southern Hemisphere in the Eocene of the La Meseta Formation improves our knowledge concerning the diversity and paleobiology of the cartilaginous fishes of this deposit, and provides new insights about the biotic turnovers that involved the high trophic levels of the marine settings after the end-Cretaceous extinction and before the establishment of the modern marine ecosystems. |
format |
Article in Journal/Newspaper |
author |
MARRAMÀ, GIUSEPPE ENGELBRECHT, ANDREA MÖRS, THOMAS REGUERO, MARCELO A. KRIWET, JÜRGEN |
spellingShingle |
MARRAMÀ, GIUSEPPE ENGELBRECHT, ANDREA MÖRS, THOMAS REGUERO, MARCELO A. KRIWET, JÜRGEN THE SOUTHERNMOST OCCURRENCE OF BRACHYCARCHARIAS (LAMNIFORMES, ODONTASPIDIDAE) FROM THE EOCENE OF ANTARCTICA PROVIDES NEW INFORMATION ABOUT THE PALEOBIOGEOGRAPHY AND PALEOBIOLOGY OF PALEOGENE SAND TIGER SHARKS |
author_facet |
MARRAMÀ, GIUSEPPE ENGELBRECHT, ANDREA MÖRS, THOMAS REGUERO, MARCELO A. KRIWET, JÜRGEN |
author_sort |
MARRAMÀ, GIUSEPPE |
title |
THE SOUTHERNMOST OCCURRENCE OF BRACHYCARCHARIAS (LAMNIFORMES, ODONTASPIDIDAE) FROM THE EOCENE OF ANTARCTICA PROVIDES NEW INFORMATION ABOUT THE PALEOBIOGEOGRAPHY AND PALEOBIOLOGY OF PALEOGENE SAND TIGER SHARKS |
title_short |
THE SOUTHERNMOST OCCURRENCE OF BRACHYCARCHARIAS (LAMNIFORMES, ODONTASPIDIDAE) FROM THE EOCENE OF ANTARCTICA PROVIDES NEW INFORMATION ABOUT THE PALEOBIOGEOGRAPHY AND PALEOBIOLOGY OF PALEOGENE SAND TIGER SHARKS |
title_full |
THE SOUTHERNMOST OCCURRENCE OF BRACHYCARCHARIAS (LAMNIFORMES, ODONTASPIDIDAE) FROM THE EOCENE OF ANTARCTICA PROVIDES NEW INFORMATION ABOUT THE PALEOBIOGEOGRAPHY AND PALEOBIOLOGY OF PALEOGENE SAND TIGER SHARKS |
title_fullStr |
THE SOUTHERNMOST OCCURRENCE OF BRACHYCARCHARIAS (LAMNIFORMES, ODONTASPIDIDAE) FROM THE EOCENE OF ANTARCTICA PROVIDES NEW INFORMATION ABOUT THE PALEOBIOGEOGRAPHY AND PALEOBIOLOGY OF PALEOGENE SAND TIGER SHARKS |
title_full_unstemmed |
THE SOUTHERNMOST OCCURRENCE OF BRACHYCARCHARIAS (LAMNIFORMES, ODONTASPIDIDAE) FROM THE EOCENE OF ANTARCTICA PROVIDES NEW INFORMATION ABOUT THE PALEOBIOGEOGRAPHY AND PALEOBIOLOGY OF PALEOGENE SAND TIGER SHARKS |
title_sort |
southernmost occurrence of brachycarcharias (lamniformes, odontaspididae) from the eocene of antarctica provides new information about the paleobiogeography and paleobiology of paleogene sand tiger sharks |
publisher |
Università degli Studi di Milano |
publishDate |
2018 |
url |
https://riviste.unimi.it/index.php/RIPS/article/view/9985 https://doi.org/10.13130/2039-4942/9985 |
long_lat |
ENVELOPE(-56.767,-56.767,-64.283,-64.283) ENVELOPE(-56.750,-56.750,-64.283,-64.283) |
geographic |
Seymour Seymour Island |
geographic_facet |
Seymour Seymour Island |
genre |
Antarc* Antarctica Seymour Island |
genre_facet |
Antarc* Antarctica Seymour Island |
op_source |
RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA Vol. 124 No. 2 (2018) Rivista italiana di Paleontologia e Stratigrafia; V. 124 N. 2 (2018) 2039-4942 0035-6883 |
op_relation |
https://riviste.unimi.it/index.php/RIPS/article/view/9985/9425 https://riviste.unimi.it/index.php/RIPS/article/view/9985 doi:10.13130/2039-4942/9985 |
op_rights |
Copyright (c) 2018 GIUSEPPE MARRAMÀ, ANDREA ENGELBRECHT, THOMAS MÖRS, MARCELO A. REGUERO, JÜRGEN KRIWET |
op_doi |
https://doi.org/10.13130/2039-4942/9985 |
_version_ |
1766197048988663808 |