Maxillary Molar Enamel Dentine-Junction Shape Differences between Krapina Neanderthals and Modern Humans

Autores
Delgado Burbano, Miguel Eduardo
Año de publicación
2024
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Archaic and modern humans differ in a range of craniodental features. From a taxonomic and phylogenetic perspective, it is essential to distinguish between species accurately through detailed morphological characterizations. This study analyzes the size and shape variation of the enamel-dentine junction (EDJ) of upper molars from two hominin species, early Neanderthals from Krapina (N = 13) and mid-Holocene European modern humans (N = 14), to assess the extent of their endostructural morphological differentiation. The EDJ was obtained through microtomographic scans of each molar using segmentation procedures. Three-dimensional landmarks semilandmarks and 3D geometric morphometric methods were employed to investigate EDJ size and shape variation through univariate (t-test), multivariate exploratory, and classification methods (PCA and LDA). The results indicate that the shape of the EDJ and cervix of M2 differentiates Krapina Neanderthals from mid-Holocene European modern humans with a high degree of accuracy (~85%). Furthermore, EDJ size and dental nonmetric traits expressed in this structure provide additional information that is useful for distinguishing between the two species. Compared to modern humans, Krapina Neanderthals exhibit reduced dental diversity. From an endostructural perspective, this study provides additional insights into early Neanderthals´ morphological diversification relative to modern humans, which is valuable for studying middle and late Pleistocene hominin evolution.
Fil: Delgado Burbano, Miguel Eduardo. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Área Antropológica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Materia
NEANDERTHALS
MODERN HUMANS
MICROCT
TEETH
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:11336/248162
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Maxillary Molar Enamel Dentine-Junction Shape Differences between Krapina Neanderthals and Modern HumansDelgado Burbano, Miguel EduardoNEANDERTHALSMODERN HUMANSMICROCTTEETHhttps://purl.org/becyt/ford/6.1https://purl.org/becyt/ford/6Archaic and modern humans differ in a range of craniodental features. From a taxonomic and phylogenetic perspective, it is essential to distinguish between species accurately through detailed morphological characterizations. This study analyzes the size and shape variation of the enamel-dentine junction (EDJ) of upper molars from two hominin species, early Neanderthals from Krapina (N = 13) and mid-Holocene European modern humans (N = 14), to assess the extent of their endostructural morphological differentiation. The EDJ was obtained through microtomographic scans of each molar using segmentation procedures. Three-dimensional landmarks semilandmarks and 3D geometric morphometric methods were employed to investigate EDJ size and shape variation through univariate (t-test), multivariate exploratory, and classification methods (PCA and LDA). The results indicate that the shape of the EDJ and cervix of M2 differentiates Krapina Neanderthals from mid-Holocene European modern humans with a high degree of accuracy (~85%). Furthermore, EDJ size and dental nonmetric traits expressed in this structure provide additional information that is useful for distinguishing between the two species. Compared to modern humans, Krapina Neanderthals exhibit reduced dental diversity. From an endostructural perspective, this study provides additional insights into early Neanderthals´ morphological diversification relative to modern humans, which is valuable for studying middle and late Pleistocene hominin evolution.Fil: Delgado Burbano, Miguel Eduardo. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Área Antropológica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaSCIE Publishing2024-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/248162Delgado Burbano, Miguel Eduardo; Maxillary Molar Enamel Dentine-Junction Shape Differences between Krapina Neanderthals and Modern Humans; SCIE Publishing; Nature Anthropology; 2; 3; 11-2024; 10017-100172959-7641CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciepublish.com/article/pii/277info:eu-repo/semantics/altIdentifier/doi/10.70322/natanthropol.2024.10017info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:06:38Zoai:ri.conicet.gov.ar:11336/248162instacron: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:34982025-10-22 11:06:38.555CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Maxillary Molar Enamel Dentine-Junction Shape Differences between Krapina Neanderthals and Modern Humans
title Maxillary Molar Enamel Dentine-Junction Shape Differences between Krapina Neanderthals and Modern Humans
spellingShingle Maxillary Molar Enamel Dentine-Junction Shape Differences between Krapina Neanderthals and Modern Humans
Delgado Burbano, Miguel Eduardo
NEANDERTHALS
MODERN HUMANS
MICROCT
TEETH
title_short Maxillary Molar Enamel Dentine-Junction Shape Differences between Krapina Neanderthals and Modern Humans
title_full Maxillary Molar Enamel Dentine-Junction Shape Differences between Krapina Neanderthals and Modern Humans
title_fullStr Maxillary Molar Enamel Dentine-Junction Shape Differences between Krapina Neanderthals and Modern Humans
title_full_unstemmed Maxillary Molar Enamel Dentine-Junction Shape Differences between Krapina Neanderthals and Modern Humans
title_sort Maxillary Molar Enamel Dentine-Junction Shape Differences between Krapina Neanderthals and Modern Humans
dc.creator.none.fl_str_mv Delgado Burbano, Miguel Eduardo
author Delgado Burbano, Miguel Eduardo
author_facet Delgado Burbano, Miguel Eduardo
author_role author
dc.subject.none.fl_str_mv NEANDERTHALS
MODERN HUMANS
MICROCT
TEETH
topic NEANDERTHALS
MODERN HUMANS
MICROCT
TEETH
purl_subject.fl_str_mv https://purl.org/becyt/ford/6.1
https://purl.org/becyt/ford/6
dc.description.none.fl_txt_mv Archaic and modern humans differ in a range of craniodental features. From a taxonomic and phylogenetic perspective, it is essential to distinguish between species accurately through detailed morphological characterizations. This study analyzes the size and shape variation of the enamel-dentine junction (EDJ) of upper molars from two hominin species, early Neanderthals from Krapina (N = 13) and mid-Holocene European modern humans (N = 14), to assess the extent of their endostructural morphological differentiation. The EDJ was obtained through microtomographic scans of each molar using segmentation procedures. Three-dimensional landmarks semilandmarks and 3D geometric morphometric methods were employed to investigate EDJ size and shape variation through univariate (t-test), multivariate exploratory, and classification methods (PCA and LDA). The results indicate that the shape of the EDJ and cervix of M2 differentiates Krapina Neanderthals from mid-Holocene European modern humans with a high degree of accuracy (~85%). Furthermore, EDJ size and dental nonmetric traits expressed in this structure provide additional information that is useful for distinguishing between the two species. Compared to modern humans, Krapina Neanderthals exhibit reduced dental diversity. From an endostructural perspective, this study provides additional insights into early Neanderthals´ morphological diversification relative to modern humans, which is valuable for studying middle and late Pleistocene hominin evolution.
Fil: Delgado Burbano, Miguel Eduardo. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Área Antropológica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
description Archaic and modern humans differ in a range of craniodental features. From a taxonomic and phylogenetic perspective, it is essential to distinguish between species accurately through detailed morphological characterizations. This study analyzes the size and shape variation of the enamel-dentine junction (EDJ) of upper molars from two hominin species, early Neanderthals from Krapina (N = 13) and mid-Holocene European modern humans (N = 14), to assess the extent of their endostructural morphological differentiation. The EDJ was obtained through microtomographic scans of each molar using segmentation procedures. Three-dimensional landmarks semilandmarks and 3D geometric morphometric methods were employed to investigate EDJ size and shape variation through univariate (t-test), multivariate exploratory, and classification methods (PCA and LDA). The results indicate that the shape of the EDJ and cervix of M2 differentiates Krapina Neanderthals from mid-Holocene European modern humans with a high degree of accuracy (~85%). Furthermore, EDJ size and dental nonmetric traits expressed in this structure provide additional information that is useful for distinguishing between the two species. Compared to modern humans, Krapina Neanderthals exhibit reduced dental diversity. From an endostructural perspective, this study provides additional insights into early Neanderthals´ morphological diversification relative to modern humans, which is valuable for studying middle and late Pleistocene hominin evolution.
publishDate 2024
dc.date.none.fl_str_mv 2024-11
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/11336/248162
Delgado Burbano, Miguel Eduardo; Maxillary Molar Enamel Dentine-Junction Shape Differences between Krapina Neanderthals and Modern Humans; SCIE Publishing; Nature Anthropology; 2; 3; 11-2024; 10017-10017
2959-7641
CONICET Digital
CONICET
url http://hdl.handle.net/11336/248162
identifier_str_mv Delgado Burbano, Miguel Eduardo; Maxillary Molar Enamel Dentine-Junction Shape Differences between Krapina Neanderthals and Modern Humans; SCIE Publishing; Nature Anthropology; 2; 3; 11-2024; 10017-10017
2959-7641
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://www.sciepublish.com/article/pii/277
info:eu-repo/semantics/altIdentifier/doi/10.70322/natanthropol.2024.10017
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 SCIE Publishing
publisher.none.fl_str_mv SCIE Publishing
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 12.982451

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