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dc.contributor.author
Zurriaguz, Virginia Laura
dc.contributor.author
Alvarez, Alicia
dc.date.available
2019-09-25T20:08:59Z
dc.date.issued
2014-11
dc.identifier.citation
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
dc.identifier.issn
0891-2963
dc.identifier.uri
http://hdl.handle.net/11336/84465
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Taylor & Francis
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ASYMMETRY
dc.subject
GEOMETRIC MORPHOMETRICS
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PNEUMATICITY
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PRESACRAL VERTEBRAE
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TITANOSAURIA
dc.subject.classification
Paleontología
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Shape variation in presacral vertebrae of saltasaurine titanosaurs (Dinosauria, Sauropoda)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-09-24T12:51:48Z
dc.journal.volume
26
dc.journal.number
6
dc.journal.pagination
801-809
dc.journal.pais
Reino Unido
dc.description.fil
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
dc.description.fil
Fil: Alvarez, Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
dc.journal.title
Historical Biology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1080/08912963.2013.858248
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/08912963.2013.858248
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