Paleoneuroanatomy of the European lambeosaurine dinosaur Arenysaurus ardevoli

The neuroanatomy of hadrosaurid dinosaurs is well known from North America and Asia. In Europe only a few cranial remains have been recovered that include the braincase. Arenysaurus is the first European endocast for which the paleoneuroanatomy has been studied. The resulting data have enabled us to...

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Autores: Cruzado-Caballero, P, Fortuny Terricabras, Josep|||0000-0003-4282-1619, LLácer, Sergio, Canudo, JI
Tipo de recurso: artículo
Fecha de publicación:2015
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/26477
Acceso en línea:https://hdl.handle.net/2117/26477
https://dx.doi.org/10.7717/peerj.802
Access Level:acceso abierto
Palabra clave:Hadrosaurs
European lambeosaurine
Paleoneurology
Hadrosaurid
Paleobiology
Inner ear
Dinosauria
Hadrosàurids
Paleoneuroanatomia
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spelling Paleoneuroanatomy of the European lambeosaurine dinosaur Arenysaurus ardevoliCruzado-Caballero, PFortuny Terricabras, Josep|||0000-0003-4282-1619LLácer, SergioCanudo, JIHadrosaursEuropean lambeosaurinePaleoneurologyHadrosauridPaleobiologyInner earDinosauriaHadrosàuridsPaleoneuroanatomiaThe neuroanatomy of hadrosaurid dinosaurs is well known from North America and Asia. In Europe only a few cranial remains have been recovered that include the braincase. Arenysaurus is the first European endocast for which the paleoneuroanatomy has been studied. The resulting data have enabled us to draw ontogenetic, phylogenetic and functional inferences. Arenysaurus preserves the endocast and the inner ear. This cranial material was CT scanned, and a 3D-model was generated. The endocast morphology supports a general pattern for hadrosaurids with some characters that distinguish it to a subfamily level, such as a brain cavity that is anteroposteriorly shorter or the angle of the major axis of the cerebral hemisphere to the horizontal in lambeosaurines. Both these characters are present in the endocast of Arenysaurus. Osteological features indicate an adult ontogenetic stage, while some paleoneuroanatomical features are indicative of a subadult ontogenetic stage. It is hypothesized that the presence of puzzling mixture of characters that suggest different ontogenetic stages for this specimen may reflect some degree of dwarfism in Arenysaurus. Regarding the inner ear, its structure shows differences from the ornithopod clade with respect to the height of the semicircular canals. These differences could lead to a decrease in the compensatory movements of eyes and head, with important implications for the paleobiology and behavior of hadrosaurid taxa such as Edmontosaurus, Parasaurolophus and Arenysaurus. The endocranial morphology of European hadrosaurids sheds new light on the evolution of this group and may reflect the conditions in the archipelago where these animals lived during the Late CretaceousPeer Reviewed20152015-02-2420152015-02-24journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/26477https://dx.doi.org/10.7717/peerj.80225755931reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/264772026-05-27T15:37:01Z
dc.title.none.fl_str_mv Paleoneuroanatomy of the European lambeosaurine dinosaur Arenysaurus ardevoli
title Paleoneuroanatomy of the European lambeosaurine dinosaur Arenysaurus ardevoli
spellingShingle Paleoneuroanatomy of the European lambeosaurine dinosaur Arenysaurus ardevoli
Cruzado-Caballero, P
Hadrosaurs
European lambeosaurine
Paleoneurology
Hadrosaurid
Paleobiology
Inner ear
Dinosauria
Hadrosàurids
Paleoneuroanatomia
title_short Paleoneuroanatomy of the European lambeosaurine dinosaur Arenysaurus ardevoli
title_full Paleoneuroanatomy of the European lambeosaurine dinosaur Arenysaurus ardevoli
title_fullStr Paleoneuroanatomy of the European lambeosaurine dinosaur Arenysaurus ardevoli
title_full_unstemmed Paleoneuroanatomy of the European lambeosaurine dinosaur Arenysaurus ardevoli
title_sort Paleoneuroanatomy of the European lambeosaurine dinosaur Arenysaurus ardevoli
dc.creator.none.fl_str_mv Cruzado-Caballero, P
Fortuny Terricabras, Josep|||0000-0003-4282-1619
LLácer, Sergio
Canudo, JI
author Cruzado-Caballero, P
author_facet Cruzado-Caballero, P
Fortuny Terricabras, Josep|||0000-0003-4282-1619
LLácer, Sergio
Canudo, JI
author_role author
author2 Fortuny Terricabras, Josep|||0000-0003-4282-1619
LLácer, Sergio
Canudo, JI
author2_role author
author
author
dc.subject.none.fl_str_mv Hadrosaurs
European lambeosaurine
Paleoneurology
Hadrosaurid
Paleobiology
Inner ear
Dinosauria
Hadrosàurids
Paleoneuroanatomia
topic Hadrosaurs
European lambeosaurine
Paleoneurology
Hadrosaurid
Paleobiology
Inner ear
Dinosauria
Hadrosàurids
Paleoneuroanatomia
description The neuroanatomy of hadrosaurid dinosaurs is well known from North America and Asia. In Europe only a few cranial remains have been recovered that include the braincase. Arenysaurus is the first European endocast for which the paleoneuroanatomy has been studied. The resulting data have enabled us to draw ontogenetic, phylogenetic and functional inferences. Arenysaurus preserves the endocast and the inner ear. This cranial material was CT scanned, and a 3D-model was generated. The endocast morphology supports a general pattern for hadrosaurids with some characters that distinguish it to a subfamily level, such as a brain cavity that is anteroposteriorly shorter or the angle of the major axis of the cerebral hemisphere to the horizontal in lambeosaurines. Both these characters are present in the endocast of Arenysaurus. Osteological features indicate an adult ontogenetic stage, while some paleoneuroanatomical features are indicative of a subadult ontogenetic stage. It is hypothesized that the presence of puzzling mixture of characters that suggest different ontogenetic stages for this specimen may reflect some degree of dwarfism in Arenysaurus. Regarding the inner ear, its structure shows differences from the ornithopod clade with respect to the height of the semicircular canals. These differences could lead to a decrease in the compensatory movements of eyes and head, with important implications for the paleobiology and behavior of hadrosaurid taxa such as Edmontosaurus, Parasaurolophus and Arenysaurus. The endocranial morphology of European hadrosaurids sheds new light on the evolution of this group and may reflect the conditions in the archipelago where these animals lived during the Late Cretaceous
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-02-24
2015
2015-02-24
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/26477
https://dx.doi.org/10.7717/peerj.802
25755931
url https://hdl.handle.net/2117/26477
https://dx.doi.org/10.7717/peerj.802
identifier_str_mv 25755931
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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