Anatomy of the maxillary canal of Riograndia guaibensis (Cynodontia, Probainognathia)—A prozostrodont from the Late Triassic of southern Brazil

Autores
Morais Fonseca, Pedro Henrique; Martinelli, Agustín Guillermo; Gill, Pamela G.; Rayfield, Emily J.; Schultz, Cesar Leandro; Kerber, Leonardo; Ribeiro, Ana Maria; Soares, Marina Bento
Año de publicación
2024
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Investigating the evolutionary trajectory of synapsid sensory and cephalic systems is pivotal for understanding the emergence and diversification of mammals. Recent studies using CT-scanning to analyze the rostral foramina and maxillary canals morphology in fossilized specimens of probainognathian cynodonts have contributed to clarifying the homology and paleobiological interpretations of these structures. In the present work, μCT-scannings of three specimens of Riograndia guaibensis, an early Norian cynodont from southern Brazil, were analyzed and revealed an incomplete separation between the lacrimal and maxillary canals, with points of contact via non-ossified areas. While the maxillary canal exhibits a consistent morphological pattern with other Prozostrodontia, featuring three main branches along the lateral region of the snout, the rostral alveolar canal in Riograndia displays variability in the number of extra branches terminating in foramina on the lateral surface of the maxilla, showing differences among individuals and within the same skull. Additionally, pneumatization is observed in the anterior region of the skull, resembling similar structures found in reptiles and mammals. Through this pneumatization, certain branches originating from the maxillary canal extend to the canine alveolus. Further investigation is warranted to elucidate the functionality of this structure and its occurrence in other cynodont groups.
Fil: Morais Fonseca, Pedro Henrique. Universidade Federal do Rio Grande do Sul; 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. Núcleo Milenio EVOTEM; Chile
Fil: Gill, Pamela G.. Natural History Museum; Reino Unido. University of Bristol; Reino Unido
Fil: Rayfield, Emily J.. University of Bristol; Reino Unido
Fil: Schultz, Cesar Leandro. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Kerber, Leonardo. Universidade Federal de Santa Maria; Brasil
Fil: Ribeiro, Ana Maria. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Soares, Marina Bento. Universidade Federal Do Rio de Janeiro. Museu Nacional; Brasil
Materia
CYNODONTIA
MAXILLARY CANAL
TRIASSIC
SOUTH AMERICA
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:11336/264910
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Anatomy of the maxillary canal of Riograndia guaibensis (Cynodontia, Probainognathia)—A prozostrodont from the Late Triassic of southern BrazilMorais Fonseca, Pedro HenriqueMartinelli, Agustín GuillermoGill, Pamela G.Rayfield, Emily J.Schultz, Cesar LeandroKerber, LeonardoRibeiro, Ana MariaSoares, Marina BentoCYNODONTIAMAXILLARY CANALTRIASSICSOUTH AMERICAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Investigating the evolutionary trajectory of synapsid sensory and cephalic systems is pivotal for understanding the emergence and diversification of mammals. Recent studies using CT-scanning to analyze the rostral foramina and maxillary canals morphology in fossilized specimens of probainognathian cynodonts have contributed to clarifying the homology and paleobiological interpretations of these structures. In the present work, μCT-scannings of three specimens of Riograndia guaibensis, an early Norian cynodont from southern Brazil, were analyzed and revealed an incomplete separation between the lacrimal and maxillary canals, with points of contact via non-ossified areas. While the maxillary canal exhibits a consistent morphological pattern with other Prozostrodontia, featuring three main branches along the lateral region of the snout, the rostral alveolar canal in Riograndia displays variability in the number of extra branches terminating in foramina on the lateral surface of the maxilla, showing differences among individuals and within the same skull. Additionally, pneumatization is observed in the anterior region of the skull, resembling similar structures found in reptiles and mammals. Through this pneumatization, certain branches originating from the maxillary canal extend to the canine alveolus. Further investigation is warranted to elucidate the functionality of this structure and its occurrence in other cynodont groups.Fil: Morais Fonseca, Pedro Henrique. Universidade Federal do Rio Grande do Sul; BrasilFil: Martinelli, Agustín Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina. Núcleo Milenio EVOTEM; ChileFil: Gill, Pamela G.. Natural History Museum; Reino Unido. University of Bristol; Reino UnidoFil: Rayfield, Emily J.. University of Bristol; Reino UnidoFil: Schultz, Cesar Leandro. Universidade Federal do Rio Grande do Sul; BrasilFil: Kerber, Leonardo. Universidade Federal de Santa Maria; BrasilFil: Ribeiro, Ana Maria. Universidade Federal do Rio Grande do Sul; BrasilFil: Soares, Marina Bento. Universidade Federal Do Rio de Janeiro. Museu Nacional; BrasilWiley-liss, div John Wiley & Sons Inc.2024-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/264910Morais Fonseca, Pedro Henrique; Martinelli, Agustín Guillermo; Gill, Pamela G.; Rayfield, Emily J.; Schultz, Cesar Leandro; et al.; Anatomy of the maxillary canal of Riograndia guaibensis (Cynodontia, Probainognathia)—A prozostrodont from the Late Triassic of southern Brazil; Wiley-liss, div John Wiley & Sons Inc.; Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology; 308; 3; 7-2024; 827-8431932-8486CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://anatomypubs.onlinelibrary.wiley.com/doi/10.1002/ar.25540info:eu-repo/semantics/altIdentifier/doi/10.1002/ar.25540info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:37:41Zoai:ri.conicet.gov.ar:11336/264910instacron: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 14:37:41.564CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Anatomy of the maxillary canal of Riograndia guaibensis (Cynodontia, Probainognathia)—A prozostrodont from the Late Triassic of southern Brazil
title Anatomy of the maxillary canal of Riograndia guaibensis (Cynodontia, Probainognathia)—A prozostrodont from the Late Triassic of southern Brazil
spellingShingle Anatomy of the maxillary canal of Riograndia guaibensis (Cynodontia, Probainognathia)—A prozostrodont from the Late Triassic of southern Brazil
Morais Fonseca, Pedro Henrique
CYNODONTIA
MAXILLARY CANAL
TRIASSIC
SOUTH AMERICA
title_short Anatomy of the maxillary canal of Riograndia guaibensis (Cynodontia, Probainognathia)—A prozostrodont from the Late Triassic of southern Brazil
title_full Anatomy of the maxillary canal of Riograndia guaibensis (Cynodontia, Probainognathia)—A prozostrodont from the Late Triassic of southern Brazil
title_fullStr Anatomy of the maxillary canal of Riograndia guaibensis (Cynodontia, Probainognathia)—A prozostrodont from the Late Triassic of southern Brazil
title_full_unstemmed Anatomy of the maxillary canal of Riograndia guaibensis (Cynodontia, Probainognathia)—A prozostrodont from the Late Triassic of southern Brazil
title_sort Anatomy of the maxillary canal of Riograndia guaibensis (Cynodontia, Probainognathia)—A prozostrodont from the Late Triassic of southern Brazil
dc.creator.none.fl_str_mv Morais Fonseca, Pedro Henrique
Martinelli, Agustín Guillermo
Gill, Pamela G.
Rayfield, Emily J.
Schultz, Cesar Leandro
Kerber, Leonardo
Ribeiro, Ana Maria
Soares, Marina Bento
author Morais Fonseca, Pedro Henrique
author_facet Morais Fonseca, Pedro Henrique
Martinelli, Agustín Guillermo
Gill, Pamela G.
Rayfield, Emily J.
Schultz, Cesar Leandro
Kerber, Leonardo
Ribeiro, Ana Maria
Soares, Marina Bento
author_role author
author2 Martinelli, Agustín Guillermo
Gill, Pamela G.
Rayfield, Emily J.
Schultz, Cesar Leandro
Kerber, Leonardo
Ribeiro, Ana Maria
Soares, Marina Bento
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv CYNODONTIA
MAXILLARY CANAL
TRIASSIC
SOUTH AMERICA
topic CYNODONTIA
MAXILLARY CANAL
TRIASSIC
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 Investigating the evolutionary trajectory of synapsid sensory and cephalic systems is pivotal for understanding the emergence and diversification of mammals. Recent studies using CT-scanning to analyze the rostral foramina and maxillary canals morphology in fossilized specimens of probainognathian cynodonts have contributed to clarifying the homology and paleobiological interpretations of these structures. In the present work, μCT-scannings of three specimens of Riograndia guaibensis, an early Norian cynodont from southern Brazil, were analyzed and revealed an incomplete separation between the lacrimal and maxillary canals, with points of contact via non-ossified areas. While the maxillary canal exhibits a consistent morphological pattern with other Prozostrodontia, featuring three main branches along the lateral region of the snout, the rostral alveolar canal in Riograndia displays variability in the number of extra branches terminating in foramina on the lateral surface of the maxilla, showing differences among individuals and within the same skull. Additionally, pneumatization is observed in the anterior region of the skull, resembling similar structures found in reptiles and mammals. Through this pneumatization, certain branches originating from the maxillary canal extend to the canine alveolus. Further investigation is warranted to elucidate the functionality of this structure and its occurrence in other cynodont groups.
Fil: Morais Fonseca, Pedro Henrique. Universidade Federal do Rio Grande do Sul; 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. Núcleo Milenio EVOTEM; Chile
Fil: Gill, Pamela G.. Natural History Museum; Reino Unido. University of Bristol; Reino Unido
Fil: Rayfield, Emily J.. University of Bristol; Reino Unido
Fil: Schultz, Cesar Leandro. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Kerber, Leonardo. Universidade Federal de Santa Maria; Brasil
Fil: Ribeiro, Ana Maria. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Soares, Marina Bento. Universidade Federal Do Rio de Janeiro. Museu Nacional; Brasil
description Investigating the evolutionary trajectory of synapsid sensory and cephalic systems is pivotal for understanding the emergence and diversification of mammals. Recent studies using CT-scanning to analyze the rostral foramina and maxillary canals morphology in fossilized specimens of probainognathian cynodonts have contributed to clarifying the homology and paleobiological interpretations of these structures. In the present work, μCT-scannings of three specimens of Riograndia guaibensis, an early Norian cynodont from southern Brazil, were analyzed and revealed an incomplete separation between the lacrimal and maxillary canals, with points of contact via non-ossified areas. While the maxillary canal exhibits a consistent morphological pattern with other Prozostrodontia, featuring three main branches along the lateral region of the snout, the rostral alveolar canal in Riograndia displays variability in the number of extra branches terminating in foramina on the lateral surface of the maxilla, showing differences among individuals and within the same skull. Additionally, pneumatization is observed in the anterior region of the skull, resembling similar structures found in reptiles and mammals. Through this pneumatization, certain branches originating from the maxillary canal extend to the canine alveolus. Further investigation is warranted to elucidate the functionality of this structure and its occurrence in other cynodont groups.
publishDate 2024
dc.date.none.fl_str_mv 2024-07
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/11336/264910
Morais Fonseca, Pedro Henrique; Martinelli, Agustín Guillermo; Gill, Pamela G.; Rayfield, Emily J.; Schultz, Cesar Leandro; et al.; Anatomy of the maxillary canal of Riograndia guaibensis (Cynodontia, Probainognathia)—A prozostrodont from the Late Triassic of southern Brazil; Wiley-liss, div John Wiley & Sons Inc.; Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology; 308; 3; 7-2024; 827-843
1932-8486
CONICET Digital
CONICET
url http://hdl.handle.net/11336/264910
identifier_str_mv Morais Fonseca, Pedro Henrique; Martinelli, Agustín Guillermo; Gill, Pamela G.; Rayfield, Emily J.; Schultz, Cesar Leandro; et al.; Anatomy of the maxillary canal of Riograndia guaibensis (Cynodontia, Probainognathia)—A prozostrodont from the Late Triassic of southern Brazil; Wiley-liss, div John Wiley & Sons Inc.; Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology; 308; 3; 7-2024; 827-843
1932-8486
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://anatomypubs.onlinelibrary.wiley.com/doi/10.1002/ar.25540
info:eu-repo/semantics/altIdentifier/doi/10.1002/ar.25540
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
application/pdf
dc.publisher.none.fl_str_mv Wiley-liss, div John Wiley & Sons Inc.
publisher.none.fl_str_mv Wiley-liss, div John Wiley & Sons Inc.
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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