Revisiting a long‐overlooked skull: Implications for the distribution of Dinodontosaurus brevirostris (Kannemeyeriiformes) in the Brazilian Triassic

Autores
Rodrigues de Souza, Julia Lara; Da Silva, João Lucas; Neto, Voltaire D. P.; Machado, Arielli Fabrício; Escobar, Juan Alejandro; Pinheiro, Felipe L.
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Dicynodonts (Anomodontia: Dicynodontia) were one of the main groups of terrestrial tetrapods in Permian and Triassic faunas. In Brazil, the genus Dinodontosaurus is one of the most common tetrapod taxon in the Triassic Santa Maria Supersequence. This genus has a complex taxonomic history and is represented in the Triassic of both Argentina and Brazil. Nevertheless, only the species Dinodontosaurus tener is currently recognized as being present in Brazil. Dinodontosaurus tener exhibits high morphological variability among known specimens, partly due to taphonomic alterations but also potentially reflecting intraspecific or even interspecific variation. This study evaluates the morphology and taxonomic assignment of specimen MCP-1645-PV, a relatively well-preserved skull whose morphology was briefly described in the 1980s and at that time attributed to the genus Chanaria. Currently, Chanaria platyceps is considered synonymous with Dinodontosaurus brevirostris, a species regarded as endemic to Argentina. In this contribution, we reassess the morphology of specimen MCP-1645-PV and its possible classification as Dinodontosaurus brevirostris, in light of recent advances in the understanding of Dinodontosaurus taxonomy. Based on anatomical and morphometric comparisons, our study indicates the presence of Dinodontosaurus brevirostris in the Brazilian Triassic, highlighting the need for a critical reassessment of historical specimens.
Fil: Rodrigues de Souza, Julia Lara. Universidade Federal do Pampa; Brasil
Fil: Da Silva, João Lucas. Universidade Federal do Pampa; Brasil
Fil: Neto, Voltaire D. P.. Universidade Federal do Pampa; Brasil
Fil: Machado, Arielli Fabrício. Universidade Federal do Pampa; Brasil
Fil: Escobar, Juan Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Pinheiro, Felipe L.. Universidade Federal do Pampa; Brasil
Materia
Anomodontia
Dicynodontia
morphology
Santa Maria Formation
taxonomy
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:11336/283761
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/283761
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Revisiting a long‐overlooked skull: Implications for the distribution of Dinodontosaurus brevirostris (Kannemeyeriiformes) in the Brazilian TriassicRodrigues de Souza, Julia LaraDa Silva, João LucasNeto, Voltaire D. P.Machado, Arielli FabrícioEscobar, Juan AlejandroPinheiro, Felipe L.AnomodontiaDicynodontiamorphologySanta Maria Formationtaxonomyhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Dicynodonts (Anomodontia: Dicynodontia) were one of the main groups of terrestrial tetrapods in Permian and Triassic faunas. In Brazil, the genus Dinodontosaurus is one of the most common tetrapod taxon in the Triassic Santa Maria Supersequence. This genus has a complex taxonomic history and is represented in the Triassic of both Argentina and Brazil. Nevertheless, only the species Dinodontosaurus tener is currently recognized as being present in Brazil. Dinodontosaurus tener exhibits high morphological variability among known specimens, partly due to taphonomic alterations but also potentially reflecting intraspecific or even interspecific variation. This study evaluates the morphology and taxonomic assignment of specimen MCP-1645-PV, a relatively well-preserved skull whose morphology was briefly described in the 1980s and at that time attributed to the genus Chanaria. Currently, Chanaria platyceps is considered synonymous with Dinodontosaurus brevirostris, a species regarded as endemic to Argentina. In this contribution, we reassess the morphology of specimen MCP-1645-PV and its possible classification as Dinodontosaurus brevirostris, in light of recent advances in the understanding of Dinodontosaurus taxonomy. Based on anatomical and morphometric comparisons, our study indicates the presence of Dinodontosaurus brevirostris in the Brazilian Triassic, highlighting the need for a critical reassessment of historical specimens.Fil: Rodrigues de Souza, Julia Lara. Universidade Federal do Pampa; BrasilFil: Da Silva, João Lucas. Universidade Federal do Pampa; BrasilFil: Neto, Voltaire D. P.. Universidade Federal do Pampa; BrasilFil: Machado, Arielli Fabrício. Universidade Federal do Pampa; BrasilFil: Escobar, Juan Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Pinheiro, Felipe L.. Universidade Federal do Pampa; BrasilWiley-liss, div John Wiley & Sons Inc.2025-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/283761Rodrigues de Souza, Julia Lara; Da Silva, João Lucas; Neto, Voltaire D. P.; Machado, Arielli Fabrício; Escobar, Juan Alejandro; et al.; Revisiting a long‐overlooked skull: Implications for the distribution of Dinodontosaurus brevirostris (Kannemeyeriiformes) in the Brazilian Triassic; Wiley-liss, div John Wiley & Sons Inc.; Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology; 9-2025; 1-171932-8486CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://anatomypubs.onlinelibrary.wiley.com/doi/10.1002/ar.70056info:eu-repo/semantics/altIdentifier/doi/10.1002/ar.70056info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-08-25T14:40:30Zoai:ri.conicet.gov.ar:11336/283761instacron: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:34982026-08-25 14:40:30.85CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Revisiting a long‐overlooked skull: Implications for the distribution of Dinodontosaurus brevirostris (Kannemeyeriiformes) in the Brazilian Triassic
title Revisiting a long‐overlooked skull: Implications for the distribution of Dinodontosaurus brevirostris (Kannemeyeriiformes) in the Brazilian Triassic
spellingShingle Revisiting a long‐overlooked skull: Implications for the distribution of Dinodontosaurus brevirostris (Kannemeyeriiformes) in the Brazilian Triassic
Rodrigues de Souza, Julia Lara
Anomodontia
Dicynodontia
morphology
Santa Maria Formation
taxonomy
title_short Revisiting a long‐overlooked skull: Implications for the distribution of Dinodontosaurus brevirostris (Kannemeyeriiformes) in the Brazilian Triassic
title_full Revisiting a long‐overlooked skull: Implications for the distribution of Dinodontosaurus brevirostris (Kannemeyeriiformes) in the Brazilian Triassic
title_fullStr Revisiting a long‐overlooked skull: Implications for the distribution of Dinodontosaurus brevirostris (Kannemeyeriiformes) in the Brazilian Triassic
title_full_unstemmed Revisiting a long‐overlooked skull: Implications for the distribution of Dinodontosaurus brevirostris (Kannemeyeriiformes) in the Brazilian Triassic
title_sort Revisiting a long‐overlooked skull: Implications for the distribution of Dinodontosaurus brevirostris (Kannemeyeriiformes) in the Brazilian Triassic
dc.creator.none.fl_str_mv Rodrigues de Souza, Julia Lara
Da Silva, João Lucas
Neto, Voltaire D. P.
Machado, Arielli Fabrício
Escobar, Juan Alejandro
Pinheiro, Felipe L.
author Rodrigues de Souza, Julia Lara
author_facet Rodrigues de Souza, Julia Lara
Da Silva, João Lucas
Neto, Voltaire D. P.
Machado, Arielli Fabrício
Escobar, Juan Alejandro
Pinheiro, Felipe L.
author_role author
author2 Da Silva, João Lucas
Neto, Voltaire D. P.
Machado, Arielli Fabrício
Escobar, Juan Alejandro
Pinheiro, Felipe L.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Anomodontia
Dicynodontia
morphology
Santa Maria Formation
taxonomy
topic Anomodontia
Dicynodontia
morphology
Santa Maria Formation
taxonomy
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Dicynodonts (Anomodontia: Dicynodontia) were one of the main groups of terrestrial tetrapods in Permian and Triassic faunas. In Brazil, the genus Dinodontosaurus is one of the most common tetrapod taxon in the Triassic Santa Maria Supersequence. This genus has a complex taxonomic history and is represented in the Triassic of both Argentina and Brazil. Nevertheless, only the species Dinodontosaurus tener is currently recognized as being present in Brazil. Dinodontosaurus tener exhibits high morphological variability among known specimens, partly due to taphonomic alterations but also potentially reflecting intraspecific or even interspecific variation. This study evaluates the morphology and taxonomic assignment of specimen MCP-1645-PV, a relatively well-preserved skull whose morphology was briefly described in the 1980s and at that time attributed to the genus Chanaria. Currently, Chanaria platyceps is considered synonymous with Dinodontosaurus brevirostris, a species regarded as endemic to Argentina. In this contribution, we reassess the morphology of specimen MCP-1645-PV and its possible classification as Dinodontosaurus brevirostris, in light of recent advances in the understanding of Dinodontosaurus taxonomy. Based on anatomical and morphometric comparisons, our study indicates the presence of Dinodontosaurus brevirostris in the Brazilian Triassic, highlighting the need for a critical reassessment of historical specimens.
Fil: Rodrigues de Souza, Julia Lara. Universidade Federal do Pampa; Brasil
Fil: Da Silva, João Lucas. Universidade Federal do Pampa; Brasil
Fil: Neto, Voltaire D. P.. Universidade Federal do Pampa; Brasil
Fil: Machado, Arielli Fabrício. Universidade Federal do Pampa; Brasil
Fil: Escobar, Juan Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Pinheiro, Felipe L.. Universidade Federal do Pampa; Brasil
description Dicynodonts (Anomodontia: Dicynodontia) were one of the main groups of terrestrial tetrapods in Permian and Triassic faunas. In Brazil, the genus Dinodontosaurus is one of the most common tetrapod taxon in the Triassic Santa Maria Supersequence. This genus has a complex taxonomic history and is represented in the Triassic of both Argentina and Brazil. Nevertheless, only the species Dinodontosaurus tener is currently recognized as being present in Brazil. Dinodontosaurus tener exhibits high morphological variability among known specimens, partly due to taphonomic alterations but also potentially reflecting intraspecific or even interspecific variation. This study evaluates the morphology and taxonomic assignment of specimen MCP-1645-PV, a relatively well-preserved skull whose morphology was briefly described in the 1980s and at that time attributed to the genus Chanaria. Currently, Chanaria platyceps is considered synonymous with Dinodontosaurus brevirostris, a species regarded as endemic to Argentina. In this contribution, we reassess the morphology of specimen MCP-1645-PV and its possible classification as Dinodontosaurus brevirostris, in light of recent advances in the understanding of Dinodontosaurus taxonomy. Based on anatomical and morphometric comparisons, our study indicates the presence of Dinodontosaurus brevirostris in the Brazilian Triassic, highlighting the need for a critical reassessment of historical specimens.
publishDate 2025
dc.date.none.fl_str_mv 2025-09
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/11336/283761
Rodrigues de Souza, Julia Lara; Da Silva, João Lucas; Neto, Voltaire D. P.; Machado, Arielli Fabrício; Escobar, Juan Alejandro; et al.; Revisiting a long‐overlooked skull: Implications for the distribution of Dinodontosaurus brevirostris (Kannemeyeriiformes) in the Brazilian Triassic; Wiley-liss, div John Wiley & Sons Inc.; Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology; 9-2025; 1-17
1932-8486
CONICET Digital
CONICET
url http://hdl.handle.net/11336/283761
identifier_str_mv Rodrigues de Souza, Julia Lara; Da Silva, João Lucas; Neto, Voltaire D. P.; Machado, Arielli Fabrício; Escobar, Juan Alejandro; et al.; Revisiting a long‐overlooked skull: Implications for the distribution of Dinodontosaurus brevirostris (Kannemeyeriiformes) in the Brazilian Triassic; Wiley-liss, div John Wiley & Sons Inc.; Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology; 9-2025; 1-17
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.70056
info:eu-repo/semantics/altIdentifier/doi/10.1002/ar.70056
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 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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score 13.265058

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