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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ftunivlaplata:oai:sedici.unlp.edu.ar:10915/102061 2023-05-15T13:47:46+02:00 New crania from Seymour Island (Antarctica) shed light on anatomy of Eocene penguins Acosta Hospitaleche, Carolina Ileana Alicia 2013-12 application/pdf 397-412 http://sedici.unlp.edu.ar/handle/10915/102061 https://ri.conicet.gov.ar/11336/23661 en eng Polish Polar Research vol. 34, no. 4 http://sedici.unlp.edu.ar/handle/10915/102061 https://ri.conicet.gov.ar/11336/23661 issn:0138-0338 http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) CC-BY-NC-SA Ciencias Naturales Articulo 2013 ftunivlaplata 2020-09-13T00:01:32Z 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 Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Polar Research Seymour Island Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual) Antarctic Antarctic Peninsula 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) |
institution |
Open Polar |
collection |
Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual) |
op_collection_id |
ftunivlaplata |
language |
English |
topic |
Ciencias Naturales |
spellingShingle |
Ciencias Naturales Acosta Hospitaleche, Carolina Ileana Alicia New crania from Seymour Island (Antarctica) shed light on anatomy of Eocene penguins |
topic_facet |
Ciencias Naturales |
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. Facultad de Ciencias Naturales y Museo Consejo Nacional de Investigaciones Científicas y Técnicas |
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 |
publishDate |
2013 |
url |
http://sedici.unlp.edu.ar/handle/10915/102061 https://ri.conicet.gov.ar/11336/23661 |
long_lat |
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 |
Antarctic Antarctic Peninsula Marambio Seymour Seymour Island |
geographic_facet |
Antarctic Antarctic Peninsula 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 |
Polish Polar Research vol. 34, no. 4 http://sedici.unlp.edu.ar/handle/10915/102061 https://ri.conicet.gov.ar/11336/23661 issn:0138-0338 |
op_rights |
http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
op_rightsnorm |
CC-BY-NC-SA |
_version_ |
1766247821088915456 |