Craniocervical morphological integration in birds

This study investigates the morphological diversity of the neck and its integration with skull anatomy in crown-group birds (Neornithes). The craniocervical articulation, where the skull connects with the neck, can adopt either caudal (rearward) or ventral (downward) orientations. Morphological cohe...

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Detalles Bibliográficos
Autores: Marugán Lobón, Jesús Carlos, Martínez Nebreda, Sergio
Tipo de recurso: artículo
Fecha de publicación:2025
País:España
Institución:Universidad Autónoma de Madrid
Repositorio:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglés
OAI Identifier:oai:repositorio.uam.es:10486/719182
Acceso en línea:http://hdl.handle.net/10486/719182
https://dx.doi.org/10.1016/j.geobios.2024.11.007
Access Level:acceso abierto
Palabra clave:Cervical
Craniocervical
Craniofacial
Neornithes
Mesoderm
Modularity
Occipitals
Biología y Biomedicina / Biología
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spelling Craniocervical morphological integration in birdsMarugán Lobón, Jesús CarlosMartínez Nebreda, SergioCervicalCraniocervicalCraniofacialNeornithesMesodermModularityOccipitalsBiología y Biomedicina / BiologíaThis study investigates the morphological diversity of the neck and its integration with skull anatomy in crown-group birds (Neornithes). The craniocervical articulation, where the skull connects with the neck, can adopt either caudal (rearward) or ventral (downward) orientations. Morphological coherence is crucial for maintaining head stability and precise movement, suggesting that the evolution of these structures must be not only functionally, but also developmentally coordinated (i.e., morphologically integrated). To explore this hypothesis, the relationship between conventional morphometric data of the neck and geometric morphometric data of the skull were assessed using multivariate statistics (Regressions and Two-block Partial Least Squares) across a broad phylogenetic range of Neornithes. Results indicate a significant level of integration between neck and skull morphologies, where variation in neck length, vertebral counts and relative lengths correspond predictably with specific craniocervical articulations. The most pronounced skull variation occurs around the occipital region, which we interpret as possibly relating to the mesodermic origin and shared genetic signalling in the morphogenesis of all craniocervical bones. Additionally, craniofacial changes align with craniocervical modifications, implying that the skull and neck evolve as a unified yet modular system. Analysis of selected fossils (Tsaagan, Archaeopteryx, and Pengornis) suggests that the ancestral craniocervical configuration was caudal, with neck changes associated with the development of a beak and craniocervical ventralization emerging in the lineage leading to modern birdsThis study was subsidized by the Synthesys DE-TAF-5103. SMN is supported by a FPI- UAM 2019 predoctoral grant from the Universidad Autónoma de Madrid and by a postdoctoral contract granted by the Natural History Museum of Los Angeles County (NHMLAC) and the Dinosaur Institute, through a sponsorship agreement between the NHMLAC and the Centre for the Integration in Paleobiology at the Universidad Autónoma de Madrid (CIPb-UAM). SMN and JM-L are supported by the PID2023-147427NB-I00 project from the Ministerio de Ciencia, e Innovación de EspañaElsevierDepartamento de BiologíaFacultad de Ciencias20252025-03-26research articlehttp://purl.org/coar/resource_type/c_2df8fbb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/719182https://dx.doi.org/10.1016/j.geobios.2024.11.007reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/7191822026-06-23T12:46:27Z
dc.title.none.fl_str_mv Craniocervical morphological integration in birds
title Craniocervical morphological integration in birds
spellingShingle Craniocervical morphological integration in birds
Marugán Lobón, Jesús Carlos
Cervical
Craniocervical
Craniofacial
Neornithes
Mesoderm
Modularity
Occipitals
Biología y Biomedicina / Biología
title_short Craniocervical morphological integration in birds
title_full Craniocervical morphological integration in birds
title_fullStr Craniocervical morphological integration in birds
title_full_unstemmed Craniocervical morphological integration in birds
title_sort Craniocervical morphological integration in birds
dc.creator.none.fl_str_mv Marugán Lobón, Jesús Carlos
Martínez Nebreda, Sergio
author Marugán Lobón, Jesús Carlos
author_facet Marugán Lobón, Jesús Carlos
Martínez Nebreda, Sergio
author_role author
author2 Martínez Nebreda, Sergio
author2_role author
dc.contributor.none.fl_str_mv Departamento de Biología
Facultad de Ciencias
dc.subject.none.fl_str_mv Cervical
Craniocervical
Craniofacial
Neornithes
Mesoderm
Modularity
Occipitals
Biología y Biomedicina / Biología
topic Cervical
Craniocervical
Craniofacial
Neornithes
Mesoderm
Modularity
Occipitals
Biología y Biomedicina / Biología
description This study investigates the morphological diversity of the neck and its integration with skull anatomy in crown-group birds (Neornithes). The craniocervical articulation, where the skull connects with the neck, can adopt either caudal (rearward) or ventral (downward) orientations. Morphological coherence is crucial for maintaining head stability and precise movement, suggesting that the evolution of these structures must be not only functionally, but also developmentally coordinated (i.e., morphologically integrated). To explore this hypothesis, the relationship between conventional morphometric data of the neck and geometric morphometric data of the skull were assessed using multivariate statistics (Regressions and Two-block Partial Least Squares) across a broad phylogenetic range of Neornithes. Results indicate a significant level of integration between neck and skull morphologies, where variation in neck length, vertebral counts and relative lengths correspond predictably with specific craniocervical articulations. The most pronounced skull variation occurs around the occipital region, which we interpret as possibly relating to the mesodermic origin and shared genetic signalling in the morphogenesis of all craniocervical bones. Additionally, craniofacial changes align with craniocervical modifications, implying that the skull and neck evolve as a unified yet modular system. Analysis of selected fossils (Tsaagan, Archaeopteryx, and Pengornis) suggests that the ancestral craniocervical configuration was caudal, with neck changes associated with the development of a beak and craniocervical ventralization emerging in the lineage leading to modern birds
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-03-26
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10486/719182
https://dx.doi.org/10.1016/j.geobios.2024.11.007
url http://hdl.handle.net/10486/719182
https://dx.doi.org/10.1016/j.geobios.2024.11.007
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812455

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