Neurocranial osteology and neuroanatomy of a Late Cretaceous Titanosaurian sauropod from Spain (Ampelosaurus sp.)

Titanosaurians were a flourishing group of sauropod dinosaurs during Cretaceous times. Fossils of titanosaurians have been found on all continents and their remains are abundant in a number of Late Cretaceous sites. Nonetheless, the cranial anatomy of titanosaurians is still very poorly known. The S...

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Detalhes bibliográficos
Autores: Knoll, Fabien, Ridgely, Ryan C., Ortega, Francisco, Sanz, José Luis, Witmer, Lawrence M.
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2013
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/127789
Acesso em linha:http://hdl.handle.net/10261/127789
Access Level:Acceso aberto
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spelling Neurocranial osteology and neuroanatomy of a Late Cretaceous Titanosaurian sauropod from Spain (Ampelosaurus sp.)Knoll, FabienRidgely, Ryan C.Ortega, FranciscoSanz, José LuisWitmer, Lawrence M.Titanosaurians were a flourishing group of sauropod dinosaurs during Cretaceous times. Fossils of titanosaurians have been found on all continents and their remains are abundant in a number of Late Cretaceous sites. Nonetheless, the cranial anatomy of titanosaurians is still very poorly known. The Spanish latest Cretaceous locality of >Lo Hueco> yielded a relatively well preserved, titanosaurian braincase, which shares a number of phylogenetically restricted characters with Ampelosaurus atacis from France such as a flat occipital region. However, it appears to differ from A. atacis in some traits such as the greater degree of dorsoventral compression and the presence of proatlas facets. The specimen is, therefore, provisionally identified as Ampelosaurus sp. It was CT scanned, and 3D renderings of the cranial endocast and inner-ear system were generated. Our investigation highlights that, although titanosaurs were derived sauropods with a successful evolutionary history, they present a remarkably modest level of paleoneurological organization. Compared with the condition in the basal titanosauriform Giraffatitan brancai, the labyrinth of Ampelosaurus sp. shows a reduced morphology. The latter feature is possibly related to a restricted range of head-turning movements. © 2013 Knoll et al.This is a contribution to the research project CGL2009-12143 (Ministerio de Economı´a y Competitividad, Madrid), of which FK, who is currently supported by the Ramo´n y Cajal Program, is Principal Investigator.Peer ReviewedPublic Library of ScienceConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]20132016info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/127789reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1277892026-05-22T06:33:51Z
dc.title.none.fl_str_mv Neurocranial osteology and neuroanatomy of a Late Cretaceous Titanosaurian sauropod from Spain (Ampelosaurus sp.)
title Neurocranial osteology and neuroanatomy of a Late Cretaceous Titanosaurian sauropod from Spain (Ampelosaurus sp.)
spellingShingle Neurocranial osteology and neuroanatomy of a Late Cretaceous Titanosaurian sauropod from Spain (Ampelosaurus sp.)
Knoll, Fabien
title_short Neurocranial osteology and neuroanatomy of a Late Cretaceous Titanosaurian sauropod from Spain (Ampelosaurus sp.)
title_full Neurocranial osteology and neuroanatomy of a Late Cretaceous Titanosaurian sauropod from Spain (Ampelosaurus sp.)
title_fullStr Neurocranial osteology and neuroanatomy of a Late Cretaceous Titanosaurian sauropod from Spain (Ampelosaurus sp.)
title_full_unstemmed Neurocranial osteology and neuroanatomy of a Late Cretaceous Titanosaurian sauropod from Spain (Ampelosaurus sp.)
title_sort Neurocranial osteology and neuroanatomy of a Late Cretaceous Titanosaurian sauropod from Spain (Ampelosaurus sp.)
dc.creator.none.fl_str_mv Knoll, Fabien
Ridgely, Ryan C.
Ortega, Francisco
Sanz, José Luis
Witmer, Lawrence M.
author Knoll, Fabien
author_facet Knoll, Fabien
Ridgely, Ryan C.
Ortega, Francisco
Sanz, José Luis
Witmer, Lawrence M.
author_role author
author2 Ridgely, Ryan C.
Ortega, Francisco
Sanz, José Luis
Witmer, Lawrence M.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
description Titanosaurians were a flourishing group of sauropod dinosaurs during Cretaceous times. Fossils of titanosaurians have been found on all continents and their remains are abundant in a number of Late Cretaceous sites. Nonetheless, the cranial anatomy of titanosaurians is still very poorly known. The Spanish latest Cretaceous locality of >Lo Hueco> yielded a relatively well preserved, titanosaurian braincase, which shares a number of phylogenetically restricted characters with Ampelosaurus atacis from France such as a flat occipital region. However, it appears to differ from A. atacis in some traits such as the greater degree of dorsoventral compression and the presence of proatlas facets. The specimen is, therefore, provisionally identified as Ampelosaurus sp. It was CT scanned, and 3D renderings of the cranial endocast and inner-ear system were generated. Our investigation highlights that, although titanosaurs were derived sauropods with a successful evolutionary history, they present a remarkably modest level of paleoneurological organization. Compared with the condition in the basal titanosauriform Giraffatitan brancai, the labyrinth of Ampelosaurus sp. shows a reduced morphology. The latter feature is possibly related to a restricted range of head-turning movements. © 2013 Knoll et al.
publishDate 2013
dc.date.none.fl_str_mv 2013
2016
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dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/127789
url http://hdl.handle.net/10261/127789
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Public Library of Science
publisher.none.fl_str_mv Public Library of Science
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