A new large cynodont from the Late Permian (Lopingian) of the South African Karoo Basin and its phylogenetic significance

Autores
Abdala, Nestor Fernando; Gaetano, Leandro Carlos; Smith, Roger M. H.; Rubidge, Bruce
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Karoo Basin of South Africa has the best global record of Lopingian (Late Permian) non-mammaliaform cynodonts, currently represented by five species. We describe Vetusodon elikhulu gen. et sp. nov., documented by four specimens from the Daptocephalus Assemblage Zone. With a basal skull length of ~18 cm, it is the largest Lopingian cynodont and is also larger than Induan representatives of the group. Vetusodon elikhulu has a cranial morphology that departs notably from that previously documented for Permo-Triassic cynodonts. It features a short and extremely wide snout, resembling that of the contemporaneous therocephalian Moschorhinus, and has large incisors and canines that contrast with the small unicusped postcanines, suggesting a more important role of the anterior dentition for feeding. The dentary is extremely long and robust, with the posterior margin located closer to the craniomandibular joint than in other Lopingian and Induan cynodonts (e.g. Thrinaxodon). The secondary palate morphology of V. elikhulu is unique, being short and incomplete and with the posterior portion of the maxilla partly covering the vomer. A phylogenetic analysis suggests that V. elikhulu is the sister taxon of Eucynodontia and thus the most derived of the Lopingian to Induan cynodonts yet discovered.
Fil: Abdala, Nestor Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina
Fil: Gaetano, Leandro Carlos. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología; Argentina
Fil: Smith, Roger M. H.. Evolutionary Studies Institute; Sudáfrica
Fil: Rubidge, Bruce. Evolutionary Studies Institute; Sudáfrica
Materia
ANATOMY
CHANGHSINGIAN
EPICYNODONT
GONDWANA
PHYLOGENY
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:11336/144434
Acceder
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network_name_str CONICET Digital (CONICET)
spelling A new large cynodont from the Late Permian (Lopingian) of the South African Karoo Basin and its phylogenetic significanceAbdala, Nestor FernandoGaetano, Leandro CarlosSmith, Roger M. H.Rubidge, BruceANATOMYCHANGHSINGIANEPICYNODONTGONDWANAPHYLOGENYhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Karoo Basin of South Africa has the best global record of Lopingian (Late Permian) non-mammaliaform cynodonts, currently represented by five species. We describe Vetusodon elikhulu gen. et sp. nov., documented by four specimens from the Daptocephalus Assemblage Zone. With a basal skull length of ~18 cm, it is the largest Lopingian cynodont and is also larger than Induan representatives of the group. Vetusodon elikhulu has a cranial morphology that departs notably from that previously documented for Permo-Triassic cynodonts. It features a short and extremely wide snout, resembling that of the contemporaneous therocephalian Moschorhinus, and has large incisors and canines that contrast with the small unicusped postcanines, suggesting a more important role of the anterior dentition for feeding. The dentary is extremely long and robust, with the posterior margin located closer to the craniomandibular joint than in other Lopingian and Induan cynodonts (e.g. Thrinaxodon). The secondary palate morphology of V. elikhulu is unique, being short and incomplete and with the posterior portion of the maxilla partly covering the vomer. A phylogenetic analysis suggests that V. elikhulu is the sister taxon of Eucynodontia and thus the most derived of the Lopingian to Induan cynodonts yet discovered.Fil: Abdala, Nestor Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; ArgentinaFil: Gaetano, Leandro Carlos. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología; ArgentinaFil: Smith, Roger M. H.. Evolutionary Studies Institute; SudáfricaFil: Rubidge, Bruce. Evolutionary Studies Institute; SudáfricaWiley Blackwell Publishing, Inc2019-08info: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/11336/144434Abdala, Nestor Fernando; Gaetano, Leandro Carlos; Smith, Roger M. H.; Rubidge, Bruce; A new large cynodont from the Late Permian (Lopingian) of the South African Karoo Basin and its phylogenetic significance; Wiley Blackwell Publishing, Inc; Zoological Journal of the Linnean Society; 8-20190024-4082CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/zoolinnean/advance-article/doi/10.1093/zoolinnean/zlz004/5485002info:eu-repo/semantics/altIdentifier/doi/10.1093/zoolinnean/zlz004info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:46:53Zoai:ri.conicet.gov.ar:11336/144434instacron: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:34982025-09-03 09:46:53.348CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A new large cynodont from the Late Permian (Lopingian) of the South African Karoo Basin and its phylogenetic significance
title A new large cynodont from the Late Permian (Lopingian) of the South African Karoo Basin and its phylogenetic significance
spellingShingle A new large cynodont from the Late Permian (Lopingian) of the South African Karoo Basin and its phylogenetic significance
Abdala, Nestor Fernando
ANATOMY
CHANGHSINGIAN
EPICYNODONT
GONDWANA
PHYLOGENY
title_short A new large cynodont from the Late Permian (Lopingian) of the South African Karoo Basin and its phylogenetic significance
title_full A new large cynodont from the Late Permian (Lopingian) of the South African Karoo Basin and its phylogenetic significance
title_fullStr A new large cynodont from the Late Permian (Lopingian) of the South African Karoo Basin and its phylogenetic significance
title_full_unstemmed A new large cynodont from the Late Permian (Lopingian) of the South African Karoo Basin and its phylogenetic significance
title_sort A new large cynodont from the Late Permian (Lopingian) of the South African Karoo Basin and its phylogenetic significance
dc.creator.none.fl_str_mv Abdala, Nestor Fernando
Gaetano, Leandro Carlos
Smith, Roger M. H.
Rubidge, Bruce
author Abdala, Nestor Fernando
author_facet Abdala, Nestor Fernando
Gaetano, Leandro Carlos
Smith, Roger M. H.
Rubidge, Bruce
author_role author
author2 Gaetano, Leandro Carlos
Smith, Roger M. H.
Rubidge, Bruce
author2_role author
author
author
dc.subject.none.fl_str_mv ANATOMY
CHANGHSINGIAN
EPICYNODONT
GONDWANA
PHYLOGENY
topic ANATOMY
CHANGHSINGIAN
EPICYNODONT
GONDWANA
PHYLOGENY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The Karoo Basin of South Africa has the best global record of Lopingian (Late Permian) non-mammaliaform cynodonts, currently represented by five species. We describe Vetusodon elikhulu gen. et sp. nov., documented by four specimens from the Daptocephalus Assemblage Zone. With a basal skull length of ~18 cm, it is the largest Lopingian cynodont and is also larger than Induan representatives of the group. Vetusodon elikhulu has a cranial morphology that departs notably from that previously documented for Permo-Triassic cynodonts. It features a short and extremely wide snout, resembling that of the contemporaneous therocephalian Moschorhinus, and has large incisors and canines that contrast with the small unicusped postcanines, suggesting a more important role of the anterior dentition for feeding. The dentary is extremely long and robust, with the posterior margin located closer to the craniomandibular joint than in other Lopingian and Induan cynodonts (e.g. Thrinaxodon). The secondary palate morphology of V. elikhulu is unique, being short and incomplete and with the posterior portion of the maxilla partly covering the vomer. A phylogenetic analysis suggests that V. elikhulu is the sister taxon of Eucynodontia and thus the most derived of the Lopingian to Induan cynodonts yet discovered.
Fil: Abdala, Nestor Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina
Fil: Gaetano, Leandro Carlos. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología; Argentina
Fil: Smith, Roger M. H.. Evolutionary Studies Institute; Sudáfrica
Fil: Rubidge, Bruce. Evolutionary Studies Institute; Sudáfrica
description The Karoo Basin of South Africa has the best global record of Lopingian (Late Permian) non-mammaliaform cynodonts, currently represented by five species. We describe Vetusodon elikhulu gen. et sp. nov., documented by four specimens from the Daptocephalus Assemblage Zone. With a basal skull length of ~18 cm, it is the largest Lopingian cynodont and is also larger than Induan representatives of the group. Vetusodon elikhulu has a cranial morphology that departs notably from that previously documented for Permo-Triassic cynodonts. It features a short and extremely wide snout, resembling that of the contemporaneous therocephalian Moschorhinus, and has large incisors and canines that contrast with the small unicusped postcanines, suggesting a more important role of the anterior dentition for feeding. The dentary is extremely long and robust, with the posterior margin located closer to the craniomandibular joint than in other Lopingian and Induan cynodonts (e.g. Thrinaxodon). The secondary palate morphology of V. elikhulu is unique, being short and incomplete and with the posterior portion of the maxilla partly covering the vomer. A phylogenetic analysis suggests that V. elikhulu is the sister taxon of Eucynodontia and thus the most derived of the Lopingian to Induan cynodonts yet discovered.
publishDate 2019
dc.date.none.fl_str_mv 2019-08
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/11336/144434
Abdala, Nestor Fernando; Gaetano, Leandro Carlos; Smith, Roger M. H.; Rubidge, Bruce; A new large cynodont from the Late Permian (Lopingian) of the South African Karoo Basin and its phylogenetic significance; Wiley Blackwell Publishing, Inc; Zoological Journal of the Linnean Society; 8-2019
0024-4082
CONICET Digital
CONICET
url http://hdl.handle.net/11336/144434
identifier_str_mv Abdala, Nestor Fernando; Gaetano, Leandro Carlos; Smith, Roger M. H.; Rubidge, Bruce; A new large cynodont from the Late Permian (Lopingian) of the South African Karoo Basin and its phylogenetic significance; Wiley Blackwell Publishing, Inc; Zoological Journal of the Linnean Society; 8-2019
0024-4082
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://academic.oup.com/zoolinnean/advance-article/doi/10.1093/zoolinnean/zlz004/5485002
info:eu-repo/semantics/altIdentifier/doi/10.1093/zoolinnean/zlz004
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
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
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score 13.13397

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