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dc.contributor.author
Bona, Paula
dc.contributor.author
Paulina Carabajal, Ariana
dc.contributor.author
Brandoni, Zulma Nelida
dc.date.available
2018-11-01T15:06:52Z
dc.date.issued
2017-02-06
dc.identifier.citation
Bona, Paula; Paulina Carabajal, Ariana; Brandoni, Zulma Nelida; Neuroanatomy of Gryposuchus neogaeus (Crocodylia, Gavialoidea): A first integral description of the braincase and endocranial morphological variation in extinct and extant gavialoids; Cambridge University Press; Earth and Environmental Science Transactions of the Royal Society of Edinburgh; 106; 4; 6-2-2017; 235-246
dc.identifier.issn
1755-6910
dc.identifier.uri
http://hdl.handle.net/11336/63433
dc.description.abstract
Morphological studies of the braincase and cranial endocast of fossil crocodylians, especially gavialids, are scarce. Here, we present a detailed description of the neuroanatomy of Gryposuchus neogaeus from the Miocene of Argentina, based on CT scans. The cranial endocast is sub-horizontal and the angle formed between the mid-brain and the hind-brain is poorly marked. When compared with Gavialis gangeticus, the mid-brain of G. neogaeus is relatively shorter, although the distribution of cranial nerves is similar. In the floor of the endocranial cavity, posterior to the dorsum sellae, there is a median foramen that leads into a canal that runs anteroventrally through the basisphenoid to penetrate the posterior wall of the pituitary fossa (open foramen for the basilar artery?). The same structure is present in G. gangeticus, but is absent in other living crocodylians, suggesting a potential synapomorphy of Gavialoidea. The pneumaticity of the skull roof and the lateral branches of the pharyngotympanic system in G. neogaeus are markedly reduced when compared with the extant species. Comparisons with the living Gavialis indicate that the pattern of braincase morphology of Gavialidae was present in the Miocene; however, the internal morphology, including brain shape, pneumaticity of the skull roof and basicranium, is different in the two species. This work is the first step to understand the variation of the neuroanatomy in this group of archosaurs and its palaeobiological implication.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Cambridge University Press
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Cranial Endocast
dc.subject
Crocodylians
dc.subject
Inner Ear
dc.subject
Miocene
dc.subject
Palaeobiology
dc.subject
Palaeoneurology
dc.subject
Pneumaticity
dc.subject
South America
dc.subject.classification
Meteorología y Ciencias Atmosféricas
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Neuroanatomy of Gryposuchus neogaeus (Crocodylia, Gavialoidea): A first integral description of the braincase and endocranial morphological variation in extinct and extant gavialoids
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-10-23T16:15:52Z
dc.journal.volume
106
dc.journal.number
4
dc.journal.pagination
235-246
dc.journal.pais
Reino Unido
dc.journal.ciudad
Cambridge
dc.description.fil
Fil: Bona, Paula. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata; Argentina
dc.description.fil
Fil: Paulina Carabajal, Ariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
dc.description.fil
Fil: Brandoni, Zulma Nelida. Universidad Nacional de La Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Earth and Environmental Science Transactions of the Royal Society of Edinburgh
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1017/S1755691016000189
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/earth-and-environmental-science-transactions-of-royal-society-of-edinburgh/article/neuroanatomy-of-gryposuchus-neogaeus-crocodylia-gavialoidea-a-first-integral-description-of-the-braincase-and-endocranial-morphological-variation-in-extinct-and-extant-gavialoids/E3F1235C44141B7FC2927440DAA71B0F


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