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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Main Authors: MARRAMÀ, GIUSEPPE, ENGELBRECHT, ANDREA, MÖRS, THOMAS, REGUERO, MARCELO A., KRIWET, JÜRGEN
Format: Article in Journal/Newspaper
Language:English
Published: Università degli Studi di Milano 2018
Subjects:
Online Access:https://riviste.unimi.it/index.php/RIPS/article/view/9985
https://doi.org/10.13130/2039-4942/9985
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spelling 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
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