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

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...

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Autor: Acosta Hospitaleche, Carolina Ileana Alicia
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2013
País:Argentina
Recursos:Universidad Nacional de La Plata
Repositório:SEDICI (UNLP)
Idioma:inglês
OAI Identifier:oai:sedici.unlp.edu.ar:10915/102061
Acesso em linha:http://sedici.unlp.edu.ar/handle/10915/102061
Access Level:Acceso aberto
Palavra-chave:Ciencias Naturales
Antarctica
Sphenisciformes
Crania
La Meseta Formation
Late Eocene
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spelling New crania from Seymour Island (Antarctica) shed light on anatomy of Eocene penguinsAcosta Hospitaleche, Carolina Ileana AliciaCiencias NaturalesAntarcticaSphenisciformesCraniaLa Meseta FormationLate EoceneAntarctic 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.Facultad de Ciencias Naturales y MuseoConsejo Nacional de Investigaciones Científicas y Técnicas2013-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf397-412http://sedici.unlp.edu.ar/handle/10915/102061enginfo:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/23661info:eu-repo/semantics/altIdentifier/issn/0138-0338info:eu-repo/semantics/altIdentifier/doi/10.2478/popore-2013-0018info:eu-repo/semantics/altIdentifier/hdl/11336/23661info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2024-05-08T12:57:55Zoai:sedici.unlp.edu.ar:10915/102061Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292024-05-08 12:57:56.145SEDICI (UNLP) - Universidad Nacional de La Platafalse
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
Ciencias Naturales
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 Ciencias Naturales
Antarctica
Sphenisciformes
Crania
La Meseta Formation
Late Eocene
topic Ciencias Naturales
Antarctica
Sphenisciformes
Crania
La Meseta Formation
Late Eocene
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
Articulo
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/102061
url http://sedici.unlp.edu.ar/handle/10915/102061
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/23661
info:eu-repo/semantics/altIdentifier/issn/0138-0338
info:eu-repo/semantics/altIdentifier/doi/10.2478/popore-2013-0018
info:eu-repo/semantics/altIdentifier/hdl/11336/23661
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
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rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
397-412
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
instname_str Universidad Nacional de La Plata
instacron_str UNLP
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collection SEDICI (UNLP)
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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