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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ftconicet:oai:ri.conicet.gov.ar:11336/23661 2023-10-09T21:44:57+02:00 New crania from Seymour Island (Antarctica) shed light on anatomy of Eocene penguins Acosta Hospitaleche, Carolina Ileana Alicia application/pdf application/msword http://hdl.handle.net/11336/23661 eng eng Polish Acad Sciences Committee Polar Research 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 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 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ Antarctica Sphenisciformes Crania La Meseta Formation Late Eocene https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.2478/popore-2013-0018 2023-09-24T19:24:36Z 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 Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Polar Research Seymour Island CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Acosta ENVELOPE(-62.050,-62.050,-64.700,-64.700) Alicia ENVELOPE(-63.483,-63.483,-64.833,-64.833) Antarctic Antarctic Peninsula Argentina Marambio ENVELOPE(-56.750,-56.750,-64.283,-64.283) Seymour ENVELOPE(-56.767,-56.767,-64.283,-64.283) Seymour Island ENVELOPE(-56.750,-56.750,-64.283,-64.283) Polish Polar Research 34 4 397 412 |
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Open Polar |
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CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
Antarctica Sphenisciformes Crania La Meseta Formation Late Eocene https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
Antarctica Sphenisciformes Crania La Meseta Formation Late Eocene https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Acosta Hospitaleche, Carolina Ileana Alicia New crania from Seymour Island (Antarctica) shed light on anatomy of Eocene penguins |
topic_facet |
Antarctica Sphenisciformes Crania La Meseta Formation Late Eocene https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
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. 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 |
format |
Article in Journal/Newspaper |
author |
Acosta Hospitaleche, Carolina Ileana Alicia |
author_facet |
Acosta Hospitaleche, Carolina Ileana Alicia |
author_sort |
Acosta Hospitaleche, Carolina Ileana Alicia |
title |
New crania from Seymour Island (Antarctica) shed light on anatomy of Eocene penguins |
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 |
publisher |
Polish Acad Sciences Committee Polar Research |
url |
http://hdl.handle.net/11336/23661 |
long_lat |
ENVELOPE(-62.050,-62.050,-64.700,-64.700) ENVELOPE(-63.483,-63.483,-64.833,-64.833) ENVELOPE(-56.750,-56.750,-64.283,-64.283) ENVELOPE(-56.767,-56.767,-64.283,-64.283) ENVELOPE(-56.750,-56.750,-64.283,-64.283) |
geographic |
Acosta Alicia Antarctic Antarctic Peninsula Argentina Marambio Seymour Seymour Island |
geographic_facet |
Acosta Alicia Antarctic Antarctic Peninsula Argentina Marambio Seymour Seymour Island |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Polar Research Seymour Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Polar Research Seymour Island |
op_relation |
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 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 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.2478/popore-2013-0018 |
container_title |
Polish Polar Research |
container_volume |
34 |
container_issue |
4 |
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397 |
op_container_end_page |
412 |
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1779314833586388992 |