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.
Facultad de Ciencias Naturales y Museo
Consejo Nacional de Investigaciones Científicas y Técnicas - Materia
-
Ciencias Naturales
Antarctica
Sphenisciformes
Crania
La Meseta Formation
Late Eocene - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/102061
Ver los metadatos del registro completo
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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:UNLP2025-09-03T10:52:12Zoai: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:13292025-09-03 10:52:12.337SEDICI (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 |
| 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. Facultad de Ciencias Naturales y Museo Consejo Nacional de Investigaciones Científicas y Técnicas |
| 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. |
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2013 |
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2013-12 |
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eng |
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eng |
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