Neuroanatomy of Gryposuchus neogaeus (Crocodylia, Gavialoidea): A first integral description of the braincase and endocranial morphological variation in extinct and extant gavialoi...

Autores
Bona, Paula; Paulina Carabajal, Ariana; Brandoni, Zulma Nelida
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
Fil: Bona, Paula. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata; Argentina
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
Fil: Brandoni, Zulma Nelida. Universidad Nacional de La Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Cranial Endocast
Crocodylians
Inner Ear
Miocene
Palaeobiology
Palaeoneurology
Pneumaticity
South America
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/63433
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Neuroanatomy of Gryposuchus neogaeus (Crocodylia, Gavialoidea): A first integral description of the braincase and endocranial morphological variation in extinct and extant gavialoidsBona, PaulaPaulina Carabajal, ArianaBrandoni, Zulma NelidaCranial EndocastCrocodyliansInner EarMiocenePalaeobiologyPalaeoneurologyPneumaticitySouth Americahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Morphological 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.Fil: Bona, Paula. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata; ArgentinaFil: 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; ArgentinaFil: Brandoni, Zulma Nelida. Universidad Nacional de La Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaCambridge University Press2017-02-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/63433Bona, 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; 235-2461755-6910CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1017/S1755691016000189info: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/E3F1235C44141B7FC2927440DAA71B0Finfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:50:00Zoai:ri.conicet.gov.ar:11336/63433instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:50:00.532CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Neuroanatomy of Gryposuchus neogaeus (Crocodylia, Gavialoidea): A first integral description of the braincase and endocranial morphological variation in extinct and extant gavialoids
title Neuroanatomy of Gryposuchus neogaeus (Crocodylia, Gavialoidea): A first integral description of the braincase and endocranial morphological variation in extinct and extant gavialoids
spellingShingle Neuroanatomy of Gryposuchus neogaeus (Crocodylia, Gavialoidea): A first integral description of the braincase and endocranial morphological variation in extinct and extant gavialoids
Bona, Paula
Cranial Endocast
Crocodylians
Inner Ear
Miocene
Palaeobiology
Palaeoneurology
Pneumaticity
South America
title_short Neuroanatomy of Gryposuchus neogaeus (Crocodylia, Gavialoidea): A first integral description of the braincase and endocranial morphological variation in extinct and extant gavialoids
title_full Neuroanatomy of Gryposuchus neogaeus (Crocodylia, Gavialoidea): A first integral description of the braincase and endocranial morphological variation in extinct and extant gavialoids
title_fullStr Neuroanatomy of Gryposuchus neogaeus (Crocodylia, Gavialoidea): A first integral description of the braincase and endocranial morphological variation in extinct and extant gavialoids
title_full_unstemmed Neuroanatomy of Gryposuchus neogaeus (Crocodylia, Gavialoidea): A first integral description of the braincase and endocranial morphological variation in extinct and extant gavialoids
title_sort Neuroanatomy of Gryposuchus neogaeus (Crocodylia, Gavialoidea): A first integral description of the braincase and endocranial morphological variation in extinct and extant gavialoids
dc.creator.none.fl_str_mv Bona, Paula
Paulina Carabajal, Ariana
Brandoni, Zulma Nelida
author Bona, Paula
author_facet Bona, Paula
Paulina Carabajal, Ariana
Brandoni, Zulma Nelida
author_role author
author2 Paulina Carabajal, Ariana
Brandoni, Zulma Nelida
author2_role author
author
dc.subject.none.fl_str_mv Cranial Endocast
Crocodylians
Inner Ear
Miocene
Palaeobiology
Palaeoneurology
Pneumaticity
South America
topic Cranial Endocast
Crocodylians
Inner Ear
Miocene
Palaeobiology
Palaeoneurology
Pneumaticity
South America
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv 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.
Fil: Bona, Paula. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata; Argentina
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
Fil: Brandoni, Zulma Nelida. Universidad Nacional de La Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description 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.
publishDate 2017
dc.date.none.fl_str_mv 2017-02-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/63433
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
1755-6910
CONICET Digital
CONICET
url http://hdl.handle.net/11336/63433
identifier_str_mv 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
1755-6910
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1017/S1755691016000189
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
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Cambridge University Press
publisher.none.fl_str_mv Cambridge University Press
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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