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: Naturhistoriska riksmuseet, Enheten för paleobiologi 2018
Subjects:
Online Access:http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-2945
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author MARRAMÀ, GIUSEPPE
ENGELBRECHT, ANDREA
Mörs, Thomas
REGUERO, MARCELO A.
KRIWET, JÜRGEN
author_facet MARRAMÀ, GIUSEPPE
ENGELBRECHT, ANDREA
Mörs, Thomas
REGUERO, MARCELO A.
KRIWET, JÜRGEN
author_sort MARRAMÀ, GIUSEPPE
collection Swedish Museum of Natural History: Publications (DiVA)
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. The frozen Garden of Eden - Paleogene Mammals from Seymour Island, Antarctica: evidence for Gondwanan biogeography and palaeoclimate
format Article in Journal/Newspaper
genre Antarc*
Antarctica
Seymour Island
genre_facet Antarc*
Antarctica
Seymour Island
geographic Seymour
Seymour Island
geographic_facet Seymour
Seymour Island
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institution Open Polar
language English
long_lat ENVELOPE(-56.767,-56.767,-64.283,-64.283)
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op_collection_id ftnrm
op_relation Rivista italiana di paleontologia e stratigrafia, 0035-6883, 2018
doi:riviste.unimi.it/index.php/RIPS/article/view/9985
op_rights info:eu-repo/semantics/openAccess
publishDate 2018
publisher Naturhistoriska riksmuseet, Enheten för paleobiologi
record_format openpolar
spelling ftnrm:oai:DiVA.org:nrm-2945 2025-01-16T19:42:46+00:00 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 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-2945 doi:riviste.unimi.it/index.php/RIPS/article/view/9985 eng eng Naturhistoriska riksmuseet, Enheten för paleobiologi Department of Paleontology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria. Division Paleontologia de Vertebrados, Museo de La Plata, Paseo del Bosque s/n, 81900 FWA La Plata, Argentina Rivista italiana di paleontologia e stratigrafia, 0035-6883, 2018 doi:riviste.unimi.it/index.php/RIPS/article/view/9985 info:eu-repo/semantics/openAccess Earth and Related Environmental Sciences Geovetenskap och miljövetenskap Other Earth and Related Environmental Sciences Annan geovetenskap och miljövetenskap Article in journal info:eu-repo/semantics/article text 2018 ftnrm 2024-12-17T14:18:46Z 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. The frozen Garden of Eden - Paleogene Mammals from Seymour Island, Antarctica: evidence for Gondwanan biogeography and palaeoclimate Article in Journal/Newspaper Antarc* Antarctica Seymour Island Swedish Museum of Natural History: Publications (DiVA) Seymour ENVELOPE(-56.767,-56.767,-64.283,-64.283) Seymour Island ENVELOPE(-56.750,-56.750,-64.283,-64.283)
spellingShingle Earth and Related Environmental Sciences
Geovetenskap och miljövetenskap
Other Earth and Related Environmental Sciences
Annan geovetenskap och miljövetenskap
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
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_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_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_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
topic Earth and Related Environmental Sciences
Geovetenskap och miljövetenskap
Other Earth and Related Environmental Sciences
Annan geovetenskap och miljövetenskap
topic_facet Earth and Related Environmental Sciences
Geovetenskap och miljövetenskap
Other Earth and Related Environmental Sciences
Annan geovetenskap och miljövetenskap
url http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-2945