New crania from Seymour Island (Antarctica) shed light on anatomy of Eocene penguins

Autores
Acosta Hospitaleche, Carolina Ileana Alicia
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Antarctic skulls attributable to fossil penguins are rare. Three new penguin crania from Antarctica are here described providing an insight into their feeding function. One of the specimens studied is largely a natural endocast, slightly damaged, and lacking preserved osteological details. Two other specimens are the best preserved fossil penguin crania from Antarctica, enabling the study of characters not observed so far. All of them come from the uppermost Submeseta Allomember of the La Meseta Formation (Eocene–?Oligocene), Seymour (Marambio) Island, Antarctic Peninsula. The results of the comparative studies suggest that Paleogene penguins were long−skulled birds, with strong nuchal crests and deep temporal fossae. The configuration of the nuchal crests, the temporal fossae, and the parasphenoidal processes, appears to indicate the presence of powerful muscles. The nasal gland sulcus devoid of a supraorbital edge is typical of piscivorous species.
Fil: Acosta Hospitaleche, Carolina Ileana Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina
Materia
Antarctica
Sphenisciformes
Crania
La Meseta Formation
Late Eocene
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:11336/23661
Acceder
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network_name_str CONICET Digital (CONICET)
spelling New crania from Seymour Island (Antarctica) shed light on anatomy of Eocene penguinsAcosta Hospitaleche, Carolina Ileana AliciaAntarcticaSphenisciformesCraniaLa Meseta FormationLate Eocenehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Antarctic skulls attributable to fossil penguins are rare. Three new penguin crania from Antarctica are here described providing an insight into their feeding function. One of the specimens studied is largely a natural endocast, slightly damaged, and lacking preserved osteological details. Two other specimens are the best preserved fossil penguin crania from Antarctica, enabling the study of characters not observed so far. All of them come from the uppermost Submeseta Allomember of the La Meseta Formation (Eocene–?Oligocene), Seymour (Marambio) Island, Antarctic Peninsula. The results of the comparative studies suggest that Paleogene penguins were long−skulled birds, with strong nuchal crests and deep temporal fossae. The configuration of the nuchal crests, the temporal fossae, and the parasphenoidal processes, appears to indicate the presence of powerful muscles. The nasal gland sulcus devoid of a supraorbital edge is typical of piscivorous species.Fil: Acosta Hospitaleche, Carolina Ileana Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; ArgentinaPolish Acad Sciences Committee Polar Research2013-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/mswordapplication/pdfhttp://hdl.handle.net/11336/23661Acosta Hospitaleche, Carolina Ileana Alicia; New crania from Seymour Island (Antarctica) shed light on anatomy of Eocene penguins; Polish Acad Sciences Committee Polar Research; Polish Polar Research; 34; 4; 12-2013; 397-4120138-0338CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.2478/popore-2013-0018info:eu-repo/semantics/altIdentifier/url/https://www.degruyter.com/view/j/popore.2013.34.issue-4/popore-2013-0018/popore-2013-0018.xmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:57:51Zoai:ri.conicet.gov.ar:11336/23661instacron: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:34982025-09-03 09:57:51.372CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv New crania from Seymour Island (Antarctica) shed light on anatomy of Eocene penguins
title New crania from Seymour Island (Antarctica) shed light on anatomy of Eocene penguins
spellingShingle New crania from Seymour Island (Antarctica) shed light on anatomy of Eocene penguins
Acosta Hospitaleche, Carolina Ileana Alicia
Antarctica
Sphenisciformes
Crania
La Meseta Formation
Late Eocene
title_short New crania from Seymour Island (Antarctica) shed light on anatomy of Eocene penguins
title_full New crania from Seymour Island (Antarctica) shed light on anatomy of Eocene penguins
title_fullStr New crania from Seymour Island (Antarctica) shed light on anatomy of Eocene penguins
title_full_unstemmed New crania from Seymour Island (Antarctica) shed light on anatomy of Eocene penguins
title_sort New crania from Seymour Island (Antarctica) shed light on anatomy of Eocene penguins
dc.creator.none.fl_str_mv Acosta Hospitaleche, Carolina Ileana Alicia
author Acosta Hospitaleche, Carolina Ileana Alicia
author_facet Acosta Hospitaleche, Carolina Ileana Alicia
author_role author
dc.subject.none.fl_str_mv Antarctica
Sphenisciformes
Crania
La Meseta Formation
Late Eocene
topic Antarctica
Sphenisciformes
Crania
La Meseta Formation
Late Eocene
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Antarctic skulls attributable to fossil penguins are rare. Three new penguin crania from Antarctica are here described providing an insight into their feeding function. One of the specimens studied is largely a natural endocast, slightly damaged, and lacking preserved osteological details. Two other specimens are the best preserved fossil penguin crania from Antarctica, enabling the study of characters not observed so far. All of them come from the uppermost Submeseta Allomember of the La Meseta Formation (Eocene–?Oligocene), Seymour (Marambio) Island, Antarctic Peninsula. The results of the comparative studies suggest that Paleogene penguins were long−skulled birds, with strong nuchal crests and deep temporal fossae. The configuration of the nuchal crests, the temporal fossae, and the parasphenoidal processes, appears to indicate the presence of powerful muscles. The nasal gland sulcus devoid of a supraorbital edge is typical of piscivorous species.
Fil: Acosta Hospitaleche, Carolina Ileana Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina
description Antarctic skulls attributable to fossil penguins are rare. Three new penguin crania from Antarctica are here described providing an insight into their feeding function. One of the specimens studied is largely a natural endocast, slightly damaged, and lacking preserved osteological details. Two other specimens are the best preserved fossil penguin crania from Antarctica, enabling the study of characters not observed so far. All of them come from the uppermost Submeseta Allomember of the La Meseta Formation (Eocene–?Oligocene), Seymour (Marambio) Island, Antarctic Peninsula. The results of the comparative studies suggest that Paleogene penguins were long−skulled birds, with strong nuchal crests and deep temporal fossae. The configuration of the nuchal crests, the temporal fossae, and the parasphenoidal processes, appears to indicate the presence of powerful muscles. The nasal gland sulcus devoid of a supraorbital edge is typical of piscivorous species.
publishDate 2013
dc.date.none.fl_str_mv 2013-12
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/11336/23661
Acosta Hospitaleche, Carolina Ileana Alicia; New crania from Seymour Island (Antarctica) shed light on anatomy of Eocene penguins; Polish Acad Sciences Committee Polar Research; Polish Polar Research; 34; 4; 12-2013; 397-412
0138-0338
CONICET Digital
CONICET
url http://hdl.handle.net/11336/23661
identifier_str_mv Acosta Hospitaleche, Carolina Ileana Alicia; New crania from Seymour Island (Antarctica) shed light on anatomy of Eocene penguins; Polish Acad Sciences Committee Polar Research; Polish Polar Research; 34; 4; 12-2013; 397-412
0138-0338
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.2478/popore-2013-0018
info:eu-repo/semantics/altIdentifier/url/https://www.degruyter.com/view/j/popore.2013.34.issue-4/popore-2013-0018/popore-2013-0018.xml
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/msword
application/pdf
dc.publisher.none.fl_str_mv Polish Acad Sciences Committee Polar Research
publisher.none.fl_str_mv Polish Acad Sciences Committee Polar Research
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 13.13397

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