An additional brain endocast of the ictidosaur riograndia guaibensis (Eucynodontia: Probainognathia): Intraspecific variation of endocranial traits

Autores
Kerber, Leonardo; Ferreira, José Darival; Fonseca, Pedro Henrique M.; Franco, Arymatheia; Martinelli, Agustín Guillermo; Soares, Marina Bento; Ribeiro, Ana Maria
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Recently, the morphology and encephalization of the brain endocast of the Triassic non-mammaliaform probainognathian cynodont Riograndia guaibensis were studied. Here, we analyzed the brain endocast of an additional specimen of this species. The new endocast shows well-defined olfactory bulbs and a median sulcus dividing the hemispheres, traits that were not clearly observed in the first studied specimen. Encephalization quotients were also calculated, revealing similar values to other non-mammaliaform cynodonts and lower than those of the first analyzed specimen. The analyzed cranium is slightly larger than the first studied one and may represent an advanced ontogenetic stage. Hence, these differences may be related to the intraspecific variation of this cynodont or alternatively, to the preservation of each specimen.
Fil: Kerber, Leonardo. Universidade Federal de Santa Maria; Brasil
Fil: Ferreira, José Darival. Universidade Federal de Santa Maria; Brasil
Fil: Fonseca, Pedro Henrique M.. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Franco, Arymatheia. Universidade Federal de Santa Maria; Brasil
Fil: Martinelli, Agustín Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Soares, Marina Bento. Universidade Federal do Rio Grande do Sul; Brasil. Universidade Federal do Rio de Janeiro; Brasil
Fil: Ribeiro, Ana Maria. Universidade Federal do Rio Grande do Sul; Brasil
Materia
ENDOCRANIUM
ICTIDOSAURIA
MICRO-CT
PALEONEUROLOGY
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/150216
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/150216
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling An additional brain endocast of the ictidosaur riograndia guaibensis (Eucynodontia: Probainognathia): Intraspecific variation of endocranial traitsKerber, LeonardoFerreira, José DarivalFonseca, Pedro Henrique M.Franco, ArymatheiaMartinelli, Agustín GuillermoSoares, Marina BentoRibeiro, Ana MariaENDOCRANIUMICTIDOSAURIAMICRO-CTPALEONEUROLOGYhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Recently, the morphology and encephalization of the brain endocast of the Triassic non-mammaliaform probainognathian cynodont Riograndia guaibensis were studied. Here, we analyzed the brain endocast of an additional specimen of this species. The new endocast shows well-defined olfactory bulbs and a median sulcus dividing the hemispheres, traits that were not clearly observed in the first studied specimen. Encephalization quotients were also calculated, revealing similar values to other non-mammaliaform cynodonts and lower than those of the first analyzed specimen. The analyzed cranium is slightly larger than the first studied one and may represent an advanced ontogenetic stage. Hence, these differences may be related to the intraspecific variation of this cynodont or alternatively, to the preservation of each specimen.Fil: Kerber, Leonardo. Universidade Federal de Santa Maria; BrasilFil: Ferreira, José Darival. Universidade Federal de Santa Maria; BrasilFil: Fonseca, Pedro Henrique M.. Universidade Federal do Rio Grande do Sul; BrasilFil: Franco, Arymatheia. Universidade Federal de Santa Maria; BrasilFil: Martinelli, Agustín Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Soares, Marina Bento. Universidade Federal do Rio Grande do Sul; Brasil. Universidade Federal do Rio de Janeiro; BrasilFil: Ribeiro, Ana Maria. Universidade Federal do Rio Grande do Sul; BrasilAcademia Brasileira de Ciencias2021-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/150216Kerber, Leonardo; Ferreira, José Darival; Fonseca, Pedro Henrique M.; Franco, Arymatheia; Martinelli, Agustín Guillermo; et al.; An additional brain endocast of the ictidosaur riograndia guaibensis (Eucynodontia: Probainognathia): Intraspecific variation of endocranial traits; Academia Brasileira de Ciencias; Anais da Academia Brasileira de Ciencias; 93; 3-2021; 1-80001-37651678-2690CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1590/0001-3765202120200084info:eu-repo/semantics/altIdentifier/url/https://www.scielo.br/j/aabc/a/kqRqpQCd3j8fnKFKFp3hb4p/?lang=en#info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:26:17Zoai:ri.conicet.gov.ar:11336/150216instacron: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:34982025-10-15 14:26:17.3CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv An additional brain endocast of the ictidosaur riograndia guaibensis (Eucynodontia: Probainognathia): Intraspecific variation of endocranial traits
title An additional brain endocast of the ictidosaur riograndia guaibensis (Eucynodontia: Probainognathia): Intraspecific variation of endocranial traits
spellingShingle An additional brain endocast of the ictidosaur riograndia guaibensis (Eucynodontia: Probainognathia): Intraspecific variation of endocranial traits
Kerber, Leonardo
ENDOCRANIUM
ICTIDOSAURIA
MICRO-CT
PALEONEUROLOGY
title_short An additional brain endocast of the ictidosaur riograndia guaibensis (Eucynodontia: Probainognathia): Intraspecific variation of endocranial traits
title_full An additional brain endocast of the ictidosaur riograndia guaibensis (Eucynodontia: Probainognathia): Intraspecific variation of endocranial traits
title_fullStr An additional brain endocast of the ictidosaur riograndia guaibensis (Eucynodontia: Probainognathia): Intraspecific variation of endocranial traits
title_full_unstemmed An additional brain endocast of the ictidosaur riograndia guaibensis (Eucynodontia: Probainognathia): Intraspecific variation of endocranial traits
title_sort An additional brain endocast of the ictidosaur riograndia guaibensis (Eucynodontia: Probainognathia): Intraspecific variation of endocranial traits
dc.creator.none.fl_str_mv Kerber, Leonardo
Ferreira, José Darival
Fonseca, Pedro Henrique M.
Franco, Arymatheia
Martinelli, Agustín Guillermo
Soares, Marina Bento
Ribeiro, Ana Maria
author Kerber, Leonardo
author_facet Kerber, Leonardo
Ferreira, José Darival
Fonseca, Pedro Henrique M.
Franco, Arymatheia
Martinelli, Agustín Guillermo
Soares, Marina Bento
Ribeiro, Ana Maria
author_role author
author2 Ferreira, José Darival
Fonseca, Pedro Henrique M.
Franco, Arymatheia
Martinelli, Agustín Guillermo
Soares, Marina Bento
Ribeiro, Ana Maria
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv ENDOCRANIUM
ICTIDOSAURIA
MICRO-CT
PALEONEUROLOGY
topic ENDOCRANIUM
ICTIDOSAURIA
MICRO-CT
PALEONEUROLOGY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Recently, the morphology and encephalization of the brain endocast of the Triassic non-mammaliaform probainognathian cynodont Riograndia guaibensis were studied. Here, we analyzed the brain endocast of an additional specimen of this species. The new endocast shows well-defined olfactory bulbs and a median sulcus dividing the hemispheres, traits that were not clearly observed in the first studied specimen. Encephalization quotients were also calculated, revealing similar values to other non-mammaliaform cynodonts and lower than those of the first analyzed specimen. The analyzed cranium is slightly larger than the first studied one and may represent an advanced ontogenetic stage. Hence, these differences may be related to the intraspecific variation of this cynodont or alternatively, to the preservation of each specimen.
Fil: Kerber, Leonardo. Universidade Federal de Santa Maria; Brasil
Fil: Ferreira, José Darival. Universidade Federal de Santa Maria; Brasil
Fil: Fonseca, Pedro Henrique M.. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Franco, Arymatheia. Universidade Federal de Santa Maria; Brasil
Fil: Martinelli, Agustín Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Soares, Marina Bento. Universidade Federal do Rio Grande do Sul; Brasil. Universidade Federal do Rio de Janeiro; Brasil
Fil: Ribeiro, Ana Maria. Universidade Federal do Rio Grande do Sul; Brasil
description Recently, the morphology and encephalization of the brain endocast of the Triassic non-mammaliaform probainognathian cynodont Riograndia guaibensis were studied. Here, we analyzed the brain endocast of an additional specimen of this species. The new endocast shows well-defined olfactory bulbs and a median sulcus dividing the hemispheres, traits that were not clearly observed in the first studied specimen. Encephalization quotients were also calculated, revealing similar values to other non-mammaliaform cynodonts and lower than those of the first analyzed specimen. The analyzed cranium is slightly larger than the first studied one and may represent an advanced ontogenetic stage. Hence, these differences may be related to the intraspecific variation of this cynodont or alternatively, to the preservation of each specimen.
publishDate 2021
dc.date.none.fl_str_mv 2021-03
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/11336/150216
Kerber, Leonardo; Ferreira, José Darival; Fonseca, Pedro Henrique M.; Franco, Arymatheia; Martinelli, Agustín Guillermo; et al.; An additional brain endocast of the ictidosaur riograndia guaibensis (Eucynodontia: Probainognathia): Intraspecific variation of endocranial traits; Academia Brasileira de Ciencias; Anais da Academia Brasileira de Ciencias; 93; 3-2021; 1-8
0001-3765
1678-2690
CONICET Digital
CONICET
url http://hdl.handle.net/11336/150216
identifier_str_mv Kerber, Leonardo; Ferreira, José Darival; Fonseca, Pedro Henrique M.; Franco, Arymatheia; Martinelli, Agustín Guillermo; et al.; An additional brain endocast of the ictidosaur riograndia guaibensis (Eucynodontia: Probainognathia): Intraspecific variation of endocranial traits; Academia Brasileira de Ciencias; Anais da Academia Brasileira de Ciencias; 93; 3-2021; 1-8
0001-3765
1678-2690
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1590/0001-3765202120200084
info:eu-repo/semantics/altIdentifier/url/https://www.scielo.br/j/aabc/a/kqRqpQCd3j8fnKFKFp3hb4p/?lang=en#
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Academia Brasileira de Ciencias
publisher.none.fl_str_mv Academia Brasileira de Ciencias
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
_version_ 1846082706449891328
score 13.22299

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