Tooth replacement in Manidens condorensis: baseline study to address the replacement pattern in dentitions of early ornithischians

Autores
Becerra, Marcos Gabriel; Pol, Diego; Whitlock, John Andrew; Porro, Laura Beatriz
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Dental replacement in Heterodontosauridae has been debated over the last five decades primarily on indirect evidence, such as the development of wear facets and the position of erupted teeth. Direct observation of unerupted teeth provides unambiguous data for understanding tooth replacement but this has been done only for Heterodontosaurus and Fruitadens. This study addresses dental replacement in Manidens condorensis based on the positioning of functional and replacement teeth using microcomputed tomography data, differential wear along the dentition and the differences in labiolingual/apicobasal level of functional teeth. Dental replacement in Manidens condorensis was continuous in an anterior-to-posterior wave pattern, with asynchronous tooth eruption and the addition of new teeth posteriorly to the toothrow during ontogeny. Manidens shows the first evidence of dental replacement for the large dentary caniniform in Heterodontosauridae, which possibly had replacement timing distinct from the cheek dentition. Newly erupted teeth imbricate in a mesial cavity–distal crown base relationship during eruption, so that imbrication of the midposterior dentition remains unaltered during tooth replacement. The presence/absence of a small caniniform tooth in the D3 position of several specimens suggests possible intraspecific dimorphism in Manidens. On longitudinal sections of isolated crowns the histological features such as Howship's lacunae and odontoclast spaces are similar in size to extant reptiles. The differential wear decreasing posteriorly and hypothetical Z-spacing below 2.3 in Manidens are similar to basal ornithischians. Tooth replacement in Heterodontosauridae (and other early ornithischians) provides key information for understanding the dynamics of jaw function and craniomandibular specialization to herbivory.
Fil: Becerra, Marcos Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
Fil: Pol, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
Fil: Whitlock, John Andrew. Carnegie Museum of Natural History; Estados Unidos. Mount Aloysius College; Estados Unidos
Fil: Porro, Laura Beatriz. University College London; Estados Unidos
Materia
3D RECONSTRUCTION
DENTITION
HETERODONTOSAURIDAE
INTRASPECIFIC DIMORPHISM
ORNITHISCHIA
TOOTH REPLACEMENT
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:11336/143687
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Tooth replacement in Manidens condorensis: baseline study to address the replacement pattern in dentitions of early ornithischiansBecerra, Marcos GabrielPol, DiegoWhitlock, John AndrewPorro, Laura Beatriz3D RECONSTRUCTIONDENTITIONHETERODONTOSAURIDAEINTRASPECIFIC DIMORPHISMORNITHISCHIATOOTH REPLACEMENThttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Dental replacement in Heterodontosauridae has been debated over the last five decades primarily on indirect evidence, such as the development of wear facets and the position of erupted teeth. Direct observation of unerupted teeth provides unambiguous data for understanding tooth replacement but this has been done only for Heterodontosaurus and Fruitadens. This study addresses dental replacement in Manidens condorensis based on the positioning of functional and replacement teeth using microcomputed tomography data, differential wear along the dentition and the differences in labiolingual/apicobasal level of functional teeth. Dental replacement in Manidens condorensis was continuous in an anterior-to-posterior wave pattern, with asynchronous tooth eruption and the addition of new teeth posteriorly to the toothrow during ontogeny. Manidens shows the first evidence of dental replacement for the large dentary caniniform in Heterodontosauridae, which possibly had replacement timing distinct from the cheek dentition. Newly erupted teeth imbricate in a mesial cavity–distal crown base relationship during eruption, so that imbrication of the midposterior dentition remains unaltered during tooth replacement. The presence/absence of a small caniniform tooth in the D3 position of several specimens suggests possible intraspecific dimorphism in Manidens. On longitudinal sections of isolated crowns the histological features such as Howship's lacunae and odontoclast spaces are similar in size to extant reptiles. The differential wear decreasing posteriorly and hypothetical Z-spacing below 2.3 in Manidens are similar to basal ornithischians. Tooth replacement in Heterodontosauridae (and other early ornithischians) provides key information for understanding the dynamics of jaw function and craniomandibular specialization to herbivory.Fil: Becerra, Marcos Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Museo Paleontológico Egidio Feruglio; ArgentinaFil: Pol, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; ArgentinaFil: Whitlock, John Andrew. Carnegie Museum of Natural History; Estados Unidos. Mount Aloysius College; Estados UnidosFil: Porro, Laura Beatriz. University College London; Estados UnidosThe Palaeontological Association2021-05info: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/11336/143687Becerra, Marcos Gabriel; Pol, Diego; Whitlock, John Andrew; Porro, Laura Beatriz; Tooth replacement in Manidens condorensis: baseline study to address the replacement pattern in dentitions of early ornithischians; The Palaeontological Association; Papers in Palaeontology; 7; 2; 5-2021; 1167-11932056-27992056-2802CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1002/spp2.1337info:eu-repo/semantics/altIdentifier/doi/10.1002/spp2.1337info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:21:11Zoai:ri.conicet.gov.ar:11336/143687instacron: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 13:21:12.04CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Tooth replacement in Manidens condorensis: baseline study to address the replacement pattern in dentitions of early ornithischians
title Tooth replacement in Manidens condorensis: baseline study to address the replacement pattern in dentitions of early ornithischians
spellingShingle Tooth replacement in Manidens condorensis: baseline study to address the replacement pattern in dentitions of early ornithischians
Becerra, Marcos Gabriel
3D RECONSTRUCTION
DENTITION
HETERODONTOSAURIDAE
INTRASPECIFIC DIMORPHISM
ORNITHISCHIA
TOOTH REPLACEMENT
title_short Tooth replacement in Manidens condorensis: baseline study to address the replacement pattern in dentitions of early ornithischians
title_full Tooth replacement in Manidens condorensis: baseline study to address the replacement pattern in dentitions of early ornithischians
title_fullStr Tooth replacement in Manidens condorensis: baseline study to address the replacement pattern in dentitions of early ornithischians
title_full_unstemmed Tooth replacement in Manidens condorensis: baseline study to address the replacement pattern in dentitions of early ornithischians
title_sort Tooth replacement in Manidens condorensis: baseline study to address the replacement pattern in dentitions of early ornithischians
dc.creator.none.fl_str_mv Becerra, Marcos Gabriel
Pol, Diego
Whitlock, John Andrew
Porro, Laura Beatriz
author Becerra, Marcos Gabriel
author_facet Becerra, Marcos Gabriel
Pol, Diego
Whitlock, John Andrew
Porro, Laura Beatriz
author_role author
author2 Pol, Diego
Whitlock, John Andrew
Porro, Laura Beatriz
author2_role author
author
author
dc.subject.none.fl_str_mv 3D RECONSTRUCTION
DENTITION
HETERODONTOSAURIDAE
INTRASPECIFIC DIMORPHISM
ORNITHISCHIA
TOOTH REPLACEMENT
topic 3D RECONSTRUCTION
DENTITION
HETERODONTOSAURIDAE
INTRASPECIFIC DIMORPHISM
ORNITHISCHIA
TOOTH REPLACEMENT
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Dental replacement in Heterodontosauridae has been debated over the last five decades primarily on indirect evidence, such as the development of wear facets and the position of erupted teeth. Direct observation of unerupted teeth provides unambiguous data for understanding tooth replacement but this has been done only for Heterodontosaurus and Fruitadens. This study addresses dental replacement in Manidens condorensis based on the positioning of functional and replacement teeth using microcomputed tomography data, differential wear along the dentition and the differences in labiolingual/apicobasal level of functional teeth. Dental replacement in Manidens condorensis was continuous in an anterior-to-posterior wave pattern, with asynchronous tooth eruption and the addition of new teeth posteriorly to the toothrow during ontogeny. Manidens shows the first evidence of dental replacement for the large dentary caniniform in Heterodontosauridae, which possibly had replacement timing distinct from the cheek dentition. Newly erupted teeth imbricate in a mesial cavity–distal crown base relationship during eruption, so that imbrication of the midposterior dentition remains unaltered during tooth replacement. The presence/absence of a small caniniform tooth in the D3 position of several specimens suggests possible intraspecific dimorphism in Manidens. On longitudinal sections of isolated crowns the histological features such as Howship's lacunae and odontoclast spaces are similar in size to extant reptiles. The differential wear decreasing posteriorly and hypothetical Z-spacing below 2.3 in Manidens are similar to basal ornithischians. Tooth replacement in Heterodontosauridae (and other early ornithischians) provides key information for understanding the dynamics of jaw function and craniomandibular specialization to herbivory.
Fil: Becerra, Marcos Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
Fil: Pol, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
Fil: Whitlock, John Andrew. Carnegie Museum of Natural History; Estados Unidos. Mount Aloysius College; Estados Unidos
Fil: Porro, Laura Beatriz. University College London; Estados Unidos
description Dental replacement in Heterodontosauridae has been debated over the last five decades primarily on indirect evidence, such as the development of wear facets and the position of erupted teeth. Direct observation of unerupted teeth provides unambiguous data for understanding tooth replacement but this has been done only for Heterodontosaurus and Fruitadens. This study addresses dental replacement in Manidens condorensis based on the positioning of functional and replacement teeth using microcomputed tomography data, differential wear along the dentition and the differences in labiolingual/apicobasal level of functional teeth. Dental replacement in Manidens condorensis was continuous in an anterior-to-posterior wave pattern, with asynchronous tooth eruption and the addition of new teeth posteriorly to the toothrow during ontogeny. Manidens shows the first evidence of dental replacement for the large dentary caniniform in Heterodontosauridae, which possibly had replacement timing distinct from the cheek dentition. Newly erupted teeth imbricate in a mesial cavity–distal crown base relationship during eruption, so that imbrication of the midposterior dentition remains unaltered during tooth replacement. The presence/absence of a small caniniform tooth in the D3 position of several specimens suggests possible intraspecific dimorphism in Manidens. On longitudinal sections of isolated crowns the histological features such as Howship's lacunae and odontoclast spaces are similar in size to extant reptiles. The differential wear decreasing posteriorly and hypothetical Z-spacing below 2.3 in Manidens are similar to basal ornithischians. Tooth replacement in Heterodontosauridae (and other early ornithischians) provides key information for understanding the dynamics of jaw function and craniomandibular specialization to herbivory.
publishDate 2021
dc.date.none.fl_str_mv 2021-05
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/11336/143687
Becerra, Marcos Gabriel; Pol, Diego; Whitlock, John Andrew; Porro, Laura Beatriz; Tooth replacement in Manidens condorensis: baseline study to address the replacement pattern in dentitions of early ornithischians; The Palaeontological Association; Papers in Palaeontology; 7; 2; 5-2021; 1167-1193
2056-2799
2056-2802
CONICET Digital
CONICET
url http://hdl.handle.net/11336/143687
identifier_str_mv Becerra, Marcos Gabriel; Pol, Diego; Whitlock, John Andrew; Porro, Laura Beatriz; Tooth replacement in Manidens condorensis: baseline study to address the replacement pattern in dentitions of early ornithischians; The Palaeontological Association; Papers in Palaeontology; 7; 2; 5-2021; 1167-1193
2056-2799
2056-2802
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/10.1002/spp2.1337
info:eu-repo/semantics/altIdentifier/doi/10.1002/spp2.1337
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 The Palaeontological Association
publisher.none.fl_str_mv The Palaeontological Association
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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