Shape variation in presacral vertebrae of saltasaurine titanosaurs (Dinosauria, Sauropoda)

Autores
Zurriaguz, Virginia Laura; Alvarez, Alicia
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Titanosaurs were small- to giant-sized sauropods, highly derived and highly pneumatic. Using morphometric analyses, we studied differences in shape of the presacral vertebral centra in some of these sauropods, especially in saltasaurines, and compared asymmetry patterns in lateral pneumatic foramina (LPF) between these titanosaurs and avian and non-avian theropods. Geometric morphometric analyses showed that the cervical centra tend to be elongated and dorsoventrally short, with an elliptical LPF located in the middle of the centrum; dorsal centra tend to be short and higher than the cervical centra, with the LPF slightly displaced to the anterior region. Shape variation can be described as a result of the ordering of the vertebrae within both the cervical and dorsal sequences, and therefore these methods can be applied to predict the position of isolated vertebrae. A persistent pattern of asymmetry among LPF was observed when length–height indexes were plotted. The right LPF are usually larger than those on the left side in the cervical vertebrae (except in Saltasaurus loricatus) but variable in the dorsal vertebrae. We propose an explanation of this asymmetry based on the asymmetric arrangement of viscera and late development of the respiratory (and air sacs) system.
Fil: Zurriaguz, Virginia Laura. Universidad Maimónides. Área de Investigaciones Biomédicas y Biotecnológicas. Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y Diagnóstico. Departamento de Ciencias Naturales y Antropológicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Alvarez, Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
Materia
ASYMMETRY
GEOMETRIC MORPHOMETRICS
PNEUMATICITY
PRESACRAL VERTEBRAE
TITANOSAURIA
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:11336/84465
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Shape variation in presacral vertebrae of saltasaurine titanosaurs (Dinosauria, Sauropoda)Zurriaguz, Virginia LauraAlvarez, AliciaASYMMETRYGEOMETRIC MORPHOMETRICSPNEUMATICITYPRESACRAL VERTEBRAETITANOSAURIAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Titanosaurs were small- to giant-sized sauropods, highly derived and highly pneumatic. Using morphometric analyses, we studied differences in shape of the presacral vertebral centra in some of these sauropods, especially in saltasaurines, and compared asymmetry patterns in lateral pneumatic foramina (LPF) between these titanosaurs and avian and non-avian theropods. Geometric morphometric analyses showed that the cervical centra tend to be elongated and dorsoventrally short, with an elliptical LPF located in the middle of the centrum; dorsal centra tend to be short and higher than the cervical centra, with the LPF slightly displaced to the anterior region. Shape variation can be described as a result of the ordering of the vertebrae within both the cervical and dorsal sequences, and therefore these methods can be applied to predict the position of isolated vertebrae. A persistent pattern of asymmetry among LPF was observed when length–height indexes were plotted. The right LPF are usually larger than those on the left side in the cervical vertebrae (except in Saltasaurus loricatus) but variable in the dorsal vertebrae. We propose an explanation of this asymmetry based on the asymmetric arrangement of viscera and late development of the respiratory (and air sacs) system.Fil: Zurriaguz, Virginia Laura. Universidad Maimónides. Área de Investigaciones Biomédicas y Biotecnológicas. Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y Diagnóstico. Departamento de Ciencias Naturales y Antropológicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Alvarez, Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; ArgentinaTaylor & Francis2014-11info: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/11336/84465Zurriaguz, Virginia Laura; Alvarez, Alicia; Shape variation in presacral vertebrae of saltasaurine titanosaurs (Dinosauria, Sauropoda); Taylor & Francis; Historical Biology; 26; 6; 11-2014; 801-8090891-2963CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1080/08912963.2013.858248info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/08912963.2013.858248info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:18:06Zoai:ri.conicet.gov.ar:11336/84465instacron: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 11:18:06.78CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Shape variation in presacral vertebrae of saltasaurine titanosaurs (Dinosauria, Sauropoda)
title Shape variation in presacral vertebrae of saltasaurine titanosaurs (Dinosauria, Sauropoda)
spellingShingle Shape variation in presacral vertebrae of saltasaurine titanosaurs (Dinosauria, Sauropoda)
Zurriaguz, Virginia Laura
ASYMMETRY
GEOMETRIC MORPHOMETRICS
PNEUMATICITY
PRESACRAL VERTEBRAE
TITANOSAURIA
title_short Shape variation in presacral vertebrae of saltasaurine titanosaurs (Dinosauria, Sauropoda)
title_full Shape variation in presacral vertebrae of saltasaurine titanosaurs (Dinosauria, Sauropoda)
title_fullStr Shape variation in presacral vertebrae of saltasaurine titanosaurs (Dinosauria, Sauropoda)
title_full_unstemmed Shape variation in presacral vertebrae of saltasaurine titanosaurs (Dinosauria, Sauropoda)
title_sort Shape variation in presacral vertebrae of saltasaurine titanosaurs (Dinosauria, Sauropoda)
dc.creator.none.fl_str_mv Zurriaguz, Virginia Laura
Alvarez, Alicia
author Zurriaguz, Virginia Laura
author_facet Zurriaguz, Virginia Laura
Alvarez, Alicia
author_role author
author2 Alvarez, Alicia
author2_role author
dc.subject.none.fl_str_mv ASYMMETRY
GEOMETRIC MORPHOMETRICS
PNEUMATICITY
PRESACRAL VERTEBRAE
TITANOSAURIA
topic ASYMMETRY
GEOMETRIC MORPHOMETRICS
PNEUMATICITY
PRESACRAL VERTEBRAE
TITANOSAURIA
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Titanosaurs were small- to giant-sized sauropods, highly derived and highly pneumatic. Using morphometric analyses, we studied differences in shape of the presacral vertebral centra in some of these sauropods, especially in saltasaurines, and compared asymmetry patterns in lateral pneumatic foramina (LPF) between these titanosaurs and avian and non-avian theropods. Geometric morphometric analyses showed that the cervical centra tend to be elongated and dorsoventrally short, with an elliptical LPF located in the middle of the centrum; dorsal centra tend to be short and higher than the cervical centra, with the LPF slightly displaced to the anterior region. Shape variation can be described as a result of the ordering of the vertebrae within both the cervical and dorsal sequences, and therefore these methods can be applied to predict the position of isolated vertebrae. A persistent pattern of asymmetry among LPF was observed when length–height indexes were plotted. The right LPF are usually larger than those on the left side in the cervical vertebrae (except in Saltasaurus loricatus) but variable in the dorsal vertebrae. We propose an explanation of this asymmetry based on the asymmetric arrangement of viscera and late development of the respiratory (and air sacs) system.
Fil: Zurriaguz, Virginia Laura. Universidad Maimónides. Área de Investigaciones Biomédicas y Biotecnológicas. Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y Diagnóstico. Departamento de Ciencias Naturales y Antropológicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Alvarez, Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
description Titanosaurs were small- to giant-sized sauropods, highly derived and highly pneumatic. Using morphometric analyses, we studied differences in shape of the presacral vertebral centra in some of these sauropods, especially in saltasaurines, and compared asymmetry patterns in lateral pneumatic foramina (LPF) between these titanosaurs and avian and non-avian theropods. Geometric morphometric analyses showed that the cervical centra tend to be elongated and dorsoventrally short, with an elliptical LPF located in the middle of the centrum; dorsal centra tend to be short and higher than the cervical centra, with the LPF slightly displaced to the anterior region. Shape variation can be described as a result of the ordering of the vertebrae within both the cervical and dorsal sequences, and therefore these methods can be applied to predict the position of isolated vertebrae. A persistent pattern of asymmetry among LPF was observed when length–height indexes were plotted. The right LPF are usually larger than those on the left side in the cervical vertebrae (except in Saltasaurus loricatus) but variable in the dorsal vertebrae. We propose an explanation of this asymmetry based on the asymmetric arrangement of viscera and late development of the respiratory (and air sacs) system.
publishDate 2014
dc.date.none.fl_str_mv 2014-11
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/11336/84465
Zurriaguz, Virginia Laura; Alvarez, Alicia; Shape variation in presacral vertebrae of saltasaurine titanosaurs (Dinosauria, Sauropoda); Taylor & Francis; Historical Biology; 26; 6; 11-2014; 801-809
0891-2963
CONICET Digital
CONICET
url http://hdl.handle.net/11336/84465
identifier_str_mv Zurriaguz, Virginia Laura; Alvarez, Alicia; Shape variation in presacral vertebrae of saltasaurine titanosaurs (Dinosauria, Sauropoda); Taylor & Francis; Historical Biology; 26; 6; 11-2014; 801-809
0891-2963
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1080/08912963.2013.858248
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/08912963.2013.858248
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 Taylor & Francis
publisher.none.fl_str_mv Taylor & Francis
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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