Dental anatomy of the apex predator Sinraptor Dongi (Theropoda: Allosauroidea) from the late Jurassic of China

Autores
Hendrickx, Christophe Marie Fabian; Stiegler, Josef; Currie, Philip J.; Han, Fenglu; Xu, Xing; Choiniere, Jonah N.; Wu, Xiao Chung
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The dental morphology of the holotype of the theropod Sinraptor dongi from the Jurassic Shishugou Formation of China is comprehensively described. We highlight a combination of dental features that appear to be restricted to Sinraptor: (i) crowns with denticulated mesial and distal carinae extending from the root and an irregular surface texture on the enamel; (ii) a D- to salinon-shaped cross-sectional outline at the crown base in mesialmost teeth; (iii) mesial crowns with mesial carinae spiraling mesiolingually and lingually positioned longitudinal groove adjacent to the mesial carina; and (iv) particularly labiolingually compressed lateral teeth with weakly labially deflected distal carinae, flat to concave basocentral surfaces of the labial margins of the crowns, and horizontally elongated distal denticles showing short to well-developed interdenticular sulci. Using cladistic, multivariate, discriminant, and cluster analyses, we demonstrate that the dentition of Sinraptor is relatively similar to that of ceratosaurids, megalosauroids, and other allosauroids and is particularly close to that of Allosaurus. The dental anatomy of Sinraptor and Allosaurus, which differs mainly in the labiolingual compression of the lateral crowns and in the number of premaxillary teeth, shows adaptations towards a predatory lifestyle, including premaxillary teeth capable of enduring tooth-tobone contact and crowns with widely separated mesial and distal carinae capable of inflicting widely open wounds.
Fil: Hendrickx, Christophe Marie Fabian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina
Fil: Stiegler, Josef. The George Washington University; Estados Unidos
Fil: Currie, Philip J.. University of Alberta; Canadá
Fil: Han, Fenglu. University of Geoscience; China
Fil: Xu, Xing. Chinese Academy of Sciences; República de China
Fil: Choiniere, Jonah N.. University of the Witwatersrand; Sudáfrica
Fil: Wu, Xiao Chung. Canadian Museum of Nature; Canadá
Materia
CROWN
DENTICLE
DINOSAUR
THEROPOD
TOOTH
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:11336/143527
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/143527
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Dental anatomy of the apex predator Sinraptor Dongi (Theropoda: Allosauroidea) from the late Jurassic of ChinaHendrickx, Christophe Marie FabianStiegler, JosefCurrie, Philip J.Han, FengluXu, XingChoiniere, Jonah N.Wu, Xiao ChungCROWNDENTICLEDINOSAURTHEROPODTOOTHhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The dental morphology of the holotype of the theropod Sinraptor dongi from the Jurassic Shishugou Formation of China is comprehensively described. We highlight a combination of dental features that appear to be restricted to Sinraptor: (i) crowns with denticulated mesial and distal carinae extending from the root and an irregular surface texture on the enamel; (ii) a D- to salinon-shaped cross-sectional outline at the crown base in mesialmost teeth; (iii) mesial crowns with mesial carinae spiraling mesiolingually and lingually positioned longitudinal groove adjacent to the mesial carina; and (iv) particularly labiolingually compressed lateral teeth with weakly labially deflected distal carinae, flat to concave basocentral surfaces of the labial margins of the crowns, and horizontally elongated distal denticles showing short to well-developed interdenticular sulci. Using cladistic, multivariate, discriminant, and cluster analyses, we demonstrate that the dentition of Sinraptor is relatively similar to that of ceratosaurids, megalosauroids, and other allosauroids and is particularly close to that of Allosaurus. The dental anatomy of Sinraptor and Allosaurus, which differs mainly in the labiolingual compression of the lateral crowns and in the number of premaxillary teeth, shows adaptations towards a predatory lifestyle, including premaxillary teeth capable of enduring tooth-tobone contact and crowns with widely separated mesial and distal carinae capable of inflicting widely open wounds.Fil: Hendrickx, Christophe Marie Fabian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; ArgentinaFil: Stiegler, Josef. The George Washington University; Estados UnidosFil: Currie, Philip J.. University of Alberta; CanadáFil: Han, Fenglu. University of Geoscience; ChinaFil: Xu, Xing. Chinese Academy of Sciences; República de ChinaFil: Choiniere, Jonah N.. University of the Witwatersrand; SudáfricaFil: Wu, Xiao Chung. Canadian Museum of Nature; CanadáNational Research Council Canada-NRC Research Press2020-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/143527Hendrickx, Christophe Marie Fabian; Stiegler, Josef; Currie, Philip J.; Han, Fenglu; Xu, Xing; et al.; Dental anatomy of the apex predator Sinraptor Dongi (Theropoda: Allosauroidea) from the late Jurassic of China; National Research Council Canada-NRC Research Press; Canadian Journal Of Earth Sciences; 57; 9; 2-2020; 1127-11470008-4077CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.nrcresearchpress.com/doi/10.1139/cjes-2019-0231info:eu-repo/semantics/altIdentifier/doi/10.1139/cjes-2019-0231info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:24:23Zoai:ri.conicet.gov.ar:11336/143527instacron: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:34982025-09-10 13:24:24.041CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Dental anatomy of the apex predator Sinraptor Dongi (Theropoda: Allosauroidea) from the late Jurassic of China
title Dental anatomy of the apex predator Sinraptor Dongi (Theropoda: Allosauroidea) from the late Jurassic of China
spellingShingle Dental anatomy of the apex predator Sinraptor Dongi (Theropoda: Allosauroidea) from the late Jurassic of China
Hendrickx, Christophe Marie Fabian
CROWN
DENTICLE
DINOSAUR
THEROPOD
TOOTH
title_short Dental anatomy of the apex predator Sinraptor Dongi (Theropoda: Allosauroidea) from the late Jurassic of China
title_full Dental anatomy of the apex predator Sinraptor Dongi (Theropoda: Allosauroidea) from the late Jurassic of China
title_fullStr Dental anatomy of the apex predator Sinraptor Dongi (Theropoda: Allosauroidea) from the late Jurassic of China
title_full_unstemmed Dental anatomy of the apex predator Sinraptor Dongi (Theropoda: Allosauroidea) from the late Jurassic of China
title_sort Dental anatomy of the apex predator Sinraptor Dongi (Theropoda: Allosauroidea) from the late Jurassic of China
dc.creator.none.fl_str_mv Hendrickx, Christophe Marie Fabian
Stiegler, Josef
Currie, Philip J.
Han, Fenglu
Xu, Xing
Choiniere, Jonah N.
Wu, Xiao Chung
author Hendrickx, Christophe Marie Fabian
author_facet Hendrickx, Christophe Marie Fabian
Stiegler, Josef
Currie, Philip J.
Han, Fenglu
Xu, Xing
Choiniere, Jonah N.
Wu, Xiao Chung
author_role author
author2 Stiegler, Josef
Currie, Philip J.
Han, Fenglu
Xu, Xing
Choiniere, Jonah N.
Wu, Xiao Chung
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv CROWN
DENTICLE
DINOSAUR
THEROPOD
TOOTH
topic CROWN
DENTICLE
DINOSAUR
THEROPOD
TOOTH
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 dental morphology of the holotype of the theropod Sinraptor dongi from the Jurassic Shishugou Formation of China is comprehensively described. We highlight a combination of dental features that appear to be restricted to Sinraptor: (i) crowns with denticulated mesial and distal carinae extending from the root and an irregular surface texture on the enamel; (ii) a D- to salinon-shaped cross-sectional outline at the crown base in mesialmost teeth; (iii) mesial crowns with mesial carinae spiraling mesiolingually and lingually positioned longitudinal groove adjacent to the mesial carina; and (iv) particularly labiolingually compressed lateral teeth with weakly labially deflected distal carinae, flat to concave basocentral surfaces of the labial margins of the crowns, and horizontally elongated distal denticles showing short to well-developed interdenticular sulci. Using cladistic, multivariate, discriminant, and cluster analyses, we demonstrate that the dentition of Sinraptor is relatively similar to that of ceratosaurids, megalosauroids, and other allosauroids and is particularly close to that of Allosaurus. The dental anatomy of Sinraptor and Allosaurus, which differs mainly in the labiolingual compression of the lateral crowns and in the number of premaxillary teeth, shows adaptations towards a predatory lifestyle, including premaxillary teeth capable of enduring tooth-tobone contact and crowns with widely separated mesial and distal carinae capable of inflicting widely open wounds.
Fil: Hendrickx, Christophe Marie Fabian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina
Fil: Stiegler, Josef. The George Washington University; Estados Unidos
Fil: Currie, Philip J.. University of Alberta; Canadá
Fil: Han, Fenglu. University of Geoscience; China
Fil: Xu, Xing. Chinese Academy of Sciences; República de China
Fil: Choiniere, Jonah N.. University of the Witwatersrand; Sudáfrica
Fil: Wu, Xiao Chung. Canadian Museum of Nature; Canadá
description The dental morphology of the holotype of the theropod Sinraptor dongi from the Jurassic Shishugou Formation of China is comprehensively described. We highlight a combination of dental features that appear to be restricted to Sinraptor: (i) crowns with denticulated mesial and distal carinae extending from the root and an irregular surface texture on the enamel; (ii) a D- to salinon-shaped cross-sectional outline at the crown base in mesialmost teeth; (iii) mesial crowns with mesial carinae spiraling mesiolingually and lingually positioned longitudinal groove adjacent to the mesial carina; and (iv) particularly labiolingually compressed lateral teeth with weakly labially deflected distal carinae, flat to concave basocentral surfaces of the labial margins of the crowns, and horizontally elongated distal denticles showing short to well-developed interdenticular sulci. Using cladistic, multivariate, discriminant, and cluster analyses, we demonstrate that the dentition of Sinraptor is relatively similar to that of ceratosaurids, megalosauroids, and other allosauroids and is particularly close to that of Allosaurus. The dental anatomy of Sinraptor and Allosaurus, which differs mainly in the labiolingual compression of the lateral crowns and in the number of premaxillary teeth, shows adaptations towards a predatory lifestyle, including premaxillary teeth capable of enduring tooth-tobone contact and crowns with widely separated mesial and distal carinae capable of inflicting widely open wounds.
publishDate 2020
dc.date.none.fl_str_mv 2020-02
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/11336/143527
Hendrickx, Christophe Marie Fabian; Stiegler, Josef; Currie, Philip J.; Han, Fenglu; Xu, Xing; et al.; Dental anatomy of the apex predator Sinraptor Dongi (Theropoda: Allosauroidea) from the late Jurassic of China; National Research Council Canada-NRC Research Press; Canadian Journal Of Earth Sciences; 57; 9; 2-2020; 1127-1147
0008-4077
CONICET Digital
CONICET
url http://hdl.handle.net/11336/143527
identifier_str_mv Hendrickx, Christophe Marie Fabian; Stiegler, Josef; Currie, Philip J.; Han, Fenglu; Xu, Xing; et al.; Dental anatomy of the apex predator Sinraptor Dongi (Theropoda: Allosauroidea) from the late Jurassic of China; National Research Council Canada-NRC Research Press; Canadian Journal Of Earth Sciences; 57; 9; 2-2020; 1127-1147
0008-4077
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.nrcresearchpress.com/doi/10.1139/cjes-2019-0231
info:eu-repo/semantics/altIdentifier/doi/10.1139/cjes-2019-0231
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 National Research Council Canada-NRC Research Press
publisher.none.fl_str_mv National Research Council Canada-NRC Research Press
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_ 1842981352695136256
score 12.48226

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