The oldest mammals from Antarctica, early Eocene of the La Meseta Formation, Seymour Island

Autores
Gelfo, Javier Nicolás; Mörse, Thomas; Lorente, Malena; López, Guillermo Marcos; Reguero, Marcelo Alfredo
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
New fossil mammals found at the base of Acantilados II Allomember of the La Meseta Formation, from the early Eocene (Ypresian) of Seymour Island, represent the oldest evidence of this group in Antarctica. Two specimens are here described; the first belongs to a talonid portion of a lower right molar assigned to the sparnotheriodontid litoptern Notiolofos sp. cf. N. arquinotiensis. Sparnotheriodontid were medium- to large-sized ungulates, with a wide distribution in the Eocene of South America and Antarctica. The second specimen is an intermediate phalanx referred to an indeterminate Eutheria, probably a South American native ungulate. These Antarctic findings in sediments of 55.3 Ma query the minimum age needed for terrestrial mammals to spread from South America to Antarctica, which should have occurred before the final break-up of Gondwana. This event involves the disappearance of the land bridge formed by the Weddellian Isthmus, which connected West Antarctica and southern South America from the Late Cretaceous until sometime in the earliest Palaeogene
Fil: Gelfo, Javier Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; Argentina
Fil: Mörse, Thomas. Swedish Museum of Natural History. Estocolmo; Suecia
Fil: Lorente, Malena. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; Argentina
Fil: López, Guillermo Marcos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; Argentina
Fil: Reguero, Marcelo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; Argentina
Materia
West Antarctica
Palaeogene
Ypresian
Toothand Bone Morphology
Ungulates
Sparnotheriodontidae
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/32645
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/32645
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling The oldest mammals from Antarctica, early Eocene of the La Meseta Formation, Seymour IslandGelfo, Javier NicolásMörse, ThomasLorente, MalenaLópez, Guillermo MarcosReguero, Marcelo AlfredoWest AntarcticaPalaeogeneYpresianToothand Bone MorphologyUngulatesSparnotheriodontidaehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1New fossil mammals found at the base of Acantilados II Allomember of the La Meseta Formation, from the early Eocene (Ypresian) of Seymour Island, represent the oldest evidence of this group in Antarctica. Two specimens are here described; the first belongs to a talonid portion of a lower right molar assigned to the sparnotheriodontid litoptern Notiolofos sp. cf. N. arquinotiensis. Sparnotheriodontid were medium- to large-sized ungulates, with a wide distribution in the Eocene of South America and Antarctica. The second specimen is an intermediate phalanx referred to an indeterminate Eutheria, probably a South American native ungulate. These Antarctic findings in sediments of 55.3 Ma query the minimum age needed for terrestrial mammals to spread from South America to Antarctica, which should have occurred before the final break-up of Gondwana. This event involves the disappearance of the land bridge formed by the Weddellian Isthmus, which connected West Antarctica and southern South America from the Late Cretaceous until sometime in the earliest PalaeogeneFil: Gelfo, Javier Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; ArgentinaFil: Mörse, Thomas. Swedish Museum of Natural History. Estocolmo; SueciaFil: Lorente, Malena. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; ArgentinaFil: López, Guillermo Marcos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; ArgentinaFil: Reguero, Marcelo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; ArgentinaWiley Blackwell Publishing, Inc2014-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/32645Reguero, Marcelo Alfredo; López, Guillermo Marcos; Lorente, Malena; Gelfo, Javier Nicolás; Mörse, Thomas; The oldest mammals from Antarctica, early Eocene of the La Meseta Formation, Seymour Island; Wiley Blackwell Publishing, Inc; Palaeontology; 58; 1; 7-2014; 101-1100031-0239CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1111/pala.12121info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/pala.12121/abstractinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:57:57Zoai:ri.conicet.gov.ar:11336/32645instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:57:57.548CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The oldest mammals from Antarctica, early Eocene of the La Meseta Formation, Seymour Island
title The oldest mammals from Antarctica, early Eocene of the La Meseta Formation, Seymour Island
spellingShingle The oldest mammals from Antarctica, early Eocene of the La Meseta Formation, Seymour Island
Gelfo, Javier Nicolás
West Antarctica
Palaeogene
Ypresian
Toothand Bone Morphology
Ungulates
Sparnotheriodontidae
title_short The oldest mammals from Antarctica, early Eocene of the La Meseta Formation, Seymour Island
title_full The oldest mammals from Antarctica, early Eocene of the La Meseta Formation, Seymour Island
title_fullStr The oldest mammals from Antarctica, early Eocene of the La Meseta Formation, Seymour Island
title_full_unstemmed The oldest mammals from Antarctica, early Eocene of the La Meseta Formation, Seymour Island
title_sort The oldest mammals from Antarctica, early Eocene of the La Meseta Formation, Seymour Island
dc.creator.none.fl_str_mv Gelfo, Javier Nicolás
Mörse, Thomas
Lorente, Malena
López, Guillermo Marcos
Reguero, Marcelo Alfredo
author Gelfo, Javier Nicolás
author_facet Gelfo, Javier Nicolás
Mörse, Thomas
Lorente, Malena
López, Guillermo Marcos
Reguero, Marcelo Alfredo
author_role author
author2 Mörse, Thomas
Lorente, Malena
López, Guillermo Marcos
Reguero, Marcelo Alfredo
author2_role author
author
author
author
dc.subject.none.fl_str_mv West Antarctica
Palaeogene
Ypresian
Toothand Bone Morphology
Ungulates
Sparnotheriodontidae
topic West Antarctica
Palaeogene
Ypresian
Toothand Bone Morphology
Ungulates
Sparnotheriodontidae
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv New fossil mammals found at the base of Acantilados II Allomember of the La Meseta Formation, from the early Eocene (Ypresian) of Seymour Island, represent the oldest evidence of this group in Antarctica. Two specimens are here described; the first belongs to a talonid portion of a lower right molar assigned to the sparnotheriodontid litoptern Notiolofos sp. cf. N. arquinotiensis. Sparnotheriodontid were medium- to large-sized ungulates, with a wide distribution in the Eocene of South America and Antarctica. The second specimen is an intermediate phalanx referred to an indeterminate Eutheria, probably a South American native ungulate. These Antarctic findings in sediments of 55.3 Ma query the minimum age needed for terrestrial mammals to spread from South America to Antarctica, which should have occurred before the final break-up of Gondwana. This event involves the disappearance of the land bridge formed by the Weddellian Isthmus, which connected West Antarctica and southern South America from the Late Cretaceous until sometime in the earliest Palaeogene
Fil: Gelfo, Javier Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; Argentina
Fil: Mörse, Thomas. Swedish Museum of Natural History. Estocolmo; Suecia
Fil: Lorente, Malena. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; Argentina
Fil: López, Guillermo Marcos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; Argentina
Fil: Reguero, Marcelo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; Argentina
description New fossil mammals found at the base of Acantilados II Allomember of the La Meseta Formation, from the early Eocene (Ypresian) of Seymour Island, represent the oldest evidence of this group in Antarctica. Two specimens are here described; the first belongs to a talonid portion of a lower right molar assigned to the sparnotheriodontid litoptern Notiolofos sp. cf. N. arquinotiensis. Sparnotheriodontid were medium- to large-sized ungulates, with a wide distribution in the Eocene of South America and Antarctica. The second specimen is an intermediate phalanx referred to an indeterminate Eutheria, probably a South American native ungulate. These Antarctic findings in sediments of 55.3 Ma query the minimum age needed for terrestrial mammals to spread from South America to Antarctica, which should have occurred before the final break-up of Gondwana. This event involves the disappearance of the land bridge formed by the Weddellian Isthmus, which connected West Antarctica and southern South America from the Late Cretaceous until sometime in the earliest Palaeogene
publishDate 2014
dc.date.none.fl_str_mv 2014-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/32645
Reguero, Marcelo Alfredo; López, Guillermo Marcos; Lorente, Malena; Gelfo, Javier Nicolás; Mörse, Thomas; The oldest mammals from Antarctica, early Eocene of the La Meseta Formation, Seymour Island; Wiley Blackwell Publishing, Inc; Palaeontology; 58; 1; 7-2014; 101-110
0031-0239
CONICET Digital
CONICET
url http://hdl.handle.net/11336/32645
identifier_str_mv Reguero, Marcelo Alfredo; López, Guillermo Marcos; Lorente, Malena; Gelfo, Javier Nicolás; Mörse, Thomas; The oldest mammals from Antarctica, early Eocene of the La Meseta Formation, Seymour Island; Wiley Blackwell Publishing, Inc; Palaeontology; 58; 1; 7-2014; 101-110
0031-0239
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1111/pala.12121
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/pala.12121/abstract
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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