Rhytidosteid temnospondyls in Gondwana: A new taxon from the Lower Triassic of Brazil

Autores
Dias da Silva, Sergio; Marsicano, Claudia Alicia; Schultz, Cesar Leandro
Año de publicación
2006
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A new South American Early Triassic stereospondyl is described and considered to represent a new taxon, Cabralia lavinai gen. et sp. nov. The material consists of two well-preserved skull fragments. According to recent phylogenetic analyses of rhytidosteids and related taxa, the new taxon is referred to the Rhytidosteidae based on the presence of orbits that are located close to the skull margins, an otic notch that is reduced to an embayment, tabular horns that are reduced and broad based, a straight posterior margin of the palate, skull sculpture with nodules and pustules, and a 'twisted' quadrate ramus of the pterygoid. The presence of a prominent lacrimal bone suggests a basal position within Rhytidosteidae for C. lavinai, and possibly a close relationship with the Indian Indobrachyops, because all other known rhytidosteids exhibit the derived condition of an absence of the lacrimal. The presence of a basal rhytidosteid in the Paraná Basin of South America strongly supports previous hypotheses of a Gondwanan origin and radiation of stereospondyl temnospondyls during the Early Triassic, but leaves unresolved the question of where exactly they arose within that region.
Fil: Dias-da-Silva, Sergio. Pontificia Universidade Católica do Rio Grande do Sul; Brasil
Fil: Marsicano, Claudia Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Schultz, Cesar Leandro. Universidade Federal do Rio Grande do Sul; Brasil
Materia
BRAZIL
EARLYTRIASSIC
GONDWANA
PALAEOBIOGEOGRAPHY
RHYTIDOSTEIDAE
TEMNOSPONDYLI
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:11336/93652
Acceder
id CONICETDig_9fb057b6980c40515153f7356a10c8b0
oai_identifier_str oai:ri.conicet.gov.ar:11336/93652
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Rhytidosteid temnospondyls in Gondwana: A new taxon from the Lower Triassic of BrazilDias da Silva, SergioMarsicano, Claudia AliciaSchultz, Cesar LeandroBRAZILEARLYTRIASSICGONDWANAPALAEOBIOGEOGRAPHYRHYTIDOSTEIDAETEMNOSPONDYLIhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1A new South American Early Triassic stereospondyl is described and considered to represent a new taxon, Cabralia lavinai gen. et sp. nov. The material consists of two well-preserved skull fragments. According to recent phylogenetic analyses of rhytidosteids and related taxa, the new taxon is referred to the Rhytidosteidae based on the presence of orbits that are located close to the skull margins, an otic notch that is reduced to an embayment, tabular horns that are reduced and broad based, a straight posterior margin of the palate, skull sculpture with nodules and pustules, and a 'twisted' quadrate ramus of the pterygoid. The presence of a prominent lacrimal bone suggests a basal position within Rhytidosteidae for C. lavinai, and possibly a close relationship with the Indian Indobrachyops, because all other known rhytidosteids exhibit the derived condition of an absence of the lacrimal. The presence of a basal rhytidosteid in the Paraná Basin of South America strongly supports previous hypotheses of a Gondwanan origin and radiation of stereospondyl temnospondyls during the Early Triassic, but leaves unresolved the question of where exactly they arose within that region.Fil: Dias-da-Silva, Sergio. Pontificia Universidade Católica do Rio Grande do Sul; BrasilFil: Marsicano, Claudia Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Schultz, Cesar Leandro. Universidade Federal do Rio Grande do Sul; BrasilWiley Blackwell Publishing, Inc2006-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/93652Dias da Silva, Sergio; Marsicano, Claudia Alicia; Schultz, Cesar Leandro; Rhytidosteid temnospondyls in Gondwana: A new taxon from the Lower Triassic of Brazil; Wiley Blackwell Publishing, Inc; Palaeontology; 49; 2; 4-2006; 381-3900031-0239CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1475-4983.2006.00545.xinfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1475-4983.2006.00545.xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:29:30Zoai:ri.conicet.gov.ar:11336/93652instacron: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 10:29:31.137CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Rhytidosteid temnospondyls in Gondwana: A new taxon from the Lower Triassic of Brazil
title Rhytidosteid temnospondyls in Gondwana: A new taxon from the Lower Triassic of Brazil
spellingShingle Rhytidosteid temnospondyls in Gondwana: A new taxon from the Lower Triassic of Brazil
Dias da Silva, Sergio
BRAZIL
EARLYTRIASSIC
GONDWANA
PALAEOBIOGEOGRAPHY
RHYTIDOSTEIDAE
TEMNOSPONDYLI
title_short Rhytidosteid temnospondyls in Gondwana: A new taxon from the Lower Triassic of Brazil
title_full Rhytidosteid temnospondyls in Gondwana: A new taxon from the Lower Triassic of Brazil
title_fullStr Rhytidosteid temnospondyls in Gondwana: A new taxon from the Lower Triassic of Brazil
title_full_unstemmed Rhytidosteid temnospondyls in Gondwana: A new taxon from the Lower Triassic of Brazil
title_sort Rhytidosteid temnospondyls in Gondwana: A new taxon from the Lower Triassic of Brazil
dc.creator.none.fl_str_mv Dias da Silva, Sergio
Marsicano, Claudia Alicia
Schultz, Cesar Leandro
author Dias da Silva, Sergio
author_facet Dias da Silva, Sergio
Marsicano, Claudia Alicia
Schultz, Cesar Leandro
author_role author
author2 Marsicano, Claudia Alicia
Schultz, Cesar Leandro
author2_role author
author
dc.subject.none.fl_str_mv BRAZIL
EARLYTRIASSIC
GONDWANA
PALAEOBIOGEOGRAPHY
RHYTIDOSTEIDAE
TEMNOSPONDYLI
topic BRAZIL
EARLYTRIASSIC
GONDWANA
PALAEOBIOGEOGRAPHY
RHYTIDOSTEIDAE
TEMNOSPONDYLI
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A new South American Early Triassic stereospondyl is described and considered to represent a new taxon, Cabralia lavinai gen. et sp. nov. The material consists of two well-preserved skull fragments. According to recent phylogenetic analyses of rhytidosteids and related taxa, the new taxon is referred to the Rhytidosteidae based on the presence of orbits that are located close to the skull margins, an otic notch that is reduced to an embayment, tabular horns that are reduced and broad based, a straight posterior margin of the palate, skull sculpture with nodules and pustules, and a 'twisted' quadrate ramus of the pterygoid. The presence of a prominent lacrimal bone suggests a basal position within Rhytidosteidae for C. lavinai, and possibly a close relationship with the Indian Indobrachyops, because all other known rhytidosteids exhibit the derived condition of an absence of the lacrimal. The presence of a basal rhytidosteid in the Paraná Basin of South America strongly supports previous hypotheses of a Gondwanan origin and radiation of stereospondyl temnospondyls during the Early Triassic, but leaves unresolved the question of where exactly they arose within that region.
Fil: Dias-da-Silva, Sergio. Pontificia Universidade Católica do Rio Grande do Sul; Brasil
Fil: Marsicano, Claudia Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Schultz, Cesar Leandro. Universidade Federal do Rio Grande do Sul; Brasil
description A new South American Early Triassic stereospondyl is described and considered to represent a new taxon, Cabralia lavinai gen. et sp. nov. The material consists of two well-preserved skull fragments. According to recent phylogenetic analyses of rhytidosteids and related taxa, the new taxon is referred to the Rhytidosteidae based on the presence of orbits that are located close to the skull margins, an otic notch that is reduced to an embayment, tabular horns that are reduced and broad based, a straight posterior margin of the palate, skull sculpture with nodules and pustules, and a 'twisted' quadrate ramus of the pterygoid. The presence of a prominent lacrimal bone suggests a basal position within Rhytidosteidae for C. lavinai, and possibly a close relationship with the Indian Indobrachyops, because all other known rhytidosteids exhibit the derived condition of an absence of the lacrimal. The presence of a basal rhytidosteid in the Paraná Basin of South America strongly supports previous hypotheses of a Gondwanan origin and radiation of stereospondyl temnospondyls during the Early Triassic, but leaves unresolved the question of where exactly they arose within that region.
publishDate 2006
dc.date.none.fl_str_mv 2006-04
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/11336/93652
Dias da Silva, Sergio; Marsicano, Claudia Alicia; Schultz, Cesar Leandro; Rhytidosteid temnospondyls in Gondwana: A new taxon from the Lower Triassic of Brazil; Wiley Blackwell Publishing, Inc; Palaeontology; 49; 2; 4-2006; 381-390
0031-0239
CONICET Digital
CONICET
url http://hdl.handle.net/11336/93652
identifier_str_mv Dias da Silva, Sergio; Marsicano, Claudia Alicia; Schultz, Cesar Leandro; Rhytidosteid temnospondyls in Gondwana: A new taxon from the Lower Triassic of Brazil; Wiley Blackwell Publishing, Inc; Palaeontology; 49; 2; 4-2006; 381-390
0031-0239
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://onlinelibrary.wiley.com/doi/abs/10.1111/j.1475-4983.2006.00545.x
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1475-4983.2006.00545.x
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 Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, 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
_version_ 1844614301669654528
score 13.069144

Publicaciones similares