Histological evidence for a supraspinous ligament in sauropod dinosaurs

Autores
Cerda, Ignacio Alejandro; Casal, Gabriel; Martínez, Rubén Darío; Ibiricu, Lucio Manuel
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Supraspinous ossified rods have been reported in the sacra of some derived sauropod dinosaurs. Although different hypotheses have been proposed to explain the origin ofthis structure, histological evidence has never been provided to support or reject any of them. In order to establish its origin, we analyse and characterize the microstructure of thesupraspinous rod of two sauropod dinosaurs from the Upper Cretaceous of Argentina. The supraspinous ossified rod is almost entirely formed by dense Haversian bone. Remains ofprimary bone consist entirely of an avascular tissue composed of two types of fibre-like structures, which are coarse and longitudinally (parallel to the main axis of the element) oriented. These structures are differentiated on the basis of their optical properties under polarized light. Very thin fibrous strands are also observed in some regions. These small fibres are all oriented parallel to one another but perpendicular to the element main axis. Histological features of the primary bone tissue indicate that the sacral supraspinous rod corresponds to an ossified supraspinous ligament. The formation of this structure appears to have been a non-pathological metaplastic ossification, possibly induced by the continuous tensile forces applied to the element.
Fil: Cerda, Ignacio Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina. Universidad Nacional de Río Negro; Argentina
Fil: Casal, Gabriel. Universidad Nacional de la Patagonia; Argentina
Fil: Martínez, Rubén Darío. Universidad Nacional de la Patagonia ; Argentina
Fil: Ibiricu, Lucio Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Materia
Bone Microstructure
Functional Morphology
Titanosauria
Metaplastic Bone
Mineralized Fibres
Sauropoda
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:11336/43912
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Histological evidence for a supraspinous ligament in sauropod dinosaursCerda, Ignacio AlejandroCasal, GabrielMartínez, Rubén DaríoIbiricu, Lucio ManuelBone MicrostructureFunctional MorphologyTitanosauriaMetaplastic BoneMineralized FibresSauropodahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Supraspinous ossified rods have been reported in the sacra of some derived sauropod dinosaurs. Although different hypotheses have been proposed to explain the origin ofthis structure, histological evidence has never been provided to support or reject any of them. In order to establish its origin, we analyse and characterize the microstructure of thesupraspinous rod of two sauropod dinosaurs from the Upper Cretaceous of Argentina. The supraspinous ossified rod is almost entirely formed by dense Haversian bone. Remains ofprimary bone consist entirely of an avascular tissue composed of two types of fibre-like structures, which are coarse and longitudinally (parallel to the main axis of the element) oriented. These structures are differentiated on the basis of their optical properties under polarized light. Very thin fibrous strands are also observed in some regions. These small fibres are all oriented parallel to one another but perpendicular to the element main axis. Histological features of the primary bone tissue indicate that the sacral supraspinous rod corresponds to an ossified supraspinous ligament. The formation of this structure appears to have been a non-pathological metaplastic ossification, possibly induced by the continuous tensile forces applied to the element.Fil: Cerda, Ignacio Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina. Universidad Nacional de Río Negro; ArgentinaFil: Casal, Gabriel. Universidad Nacional de la Patagonia; ArgentinaFil: Martínez, Rubén Darío. Universidad Nacional de la Patagonia ; ArgentinaFil: Ibiricu, Lucio Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaThe Royal Society2015-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/43912Cerda, Ignacio Alejandro; Casal, Gabriel; Martínez, Rubén Darío; Ibiricu, Lucio Manuel; Histological evidence for a supraspinous ligament in sauropod dinosaurs; The Royal Society; Royal Society Open Science; 2; 10; 10-2015; 1-172054-5703CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1098/rsos.150369info:eu-repo/semantics/altIdentifier/url/http://rsos.royalsocietypublishing.org/content/2/10/150369info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:37:54Zoai:ri.conicet.gov.ar:11336/43912instacron: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:34982025-09-29 09:37:54.996CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Histological evidence for a supraspinous ligament in sauropod dinosaurs
title Histological evidence for a supraspinous ligament in sauropod dinosaurs
spellingShingle Histological evidence for a supraspinous ligament in sauropod dinosaurs
Cerda, Ignacio Alejandro
Bone Microstructure
Functional Morphology
Titanosauria
Metaplastic Bone
Mineralized Fibres
Sauropoda
title_short Histological evidence for a supraspinous ligament in sauropod dinosaurs
title_full Histological evidence for a supraspinous ligament in sauropod dinosaurs
title_fullStr Histological evidence for a supraspinous ligament in sauropod dinosaurs
title_full_unstemmed Histological evidence for a supraspinous ligament in sauropod dinosaurs
title_sort Histological evidence for a supraspinous ligament in sauropod dinosaurs
dc.creator.none.fl_str_mv Cerda, Ignacio Alejandro
Casal, Gabriel
Martínez, Rubén Darío
Ibiricu, Lucio Manuel
author Cerda, Ignacio Alejandro
author_facet Cerda, Ignacio Alejandro
Casal, Gabriel
Martínez, Rubén Darío
Ibiricu, Lucio Manuel
author_role author
author2 Casal, Gabriel
Martínez, Rubén Darío
Ibiricu, Lucio Manuel
author2_role author
author
author
dc.subject.none.fl_str_mv Bone Microstructure
Functional Morphology
Titanosauria
Metaplastic Bone
Mineralized Fibres
Sauropoda
topic Bone Microstructure
Functional Morphology
Titanosauria
Metaplastic Bone
Mineralized Fibres
Sauropoda
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Supraspinous ossified rods have been reported in the sacra of some derived sauropod dinosaurs. Although different hypotheses have been proposed to explain the origin ofthis structure, histological evidence has never been provided to support or reject any of them. In order to establish its origin, we analyse and characterize the microstructure of thesupraspinous rod of two sauropod dinosaurs from the Upper Cretaceous of Argentina. The supraspinous ossified rod is almost entirely formed by dense Haversian bone. Remains ofprimary bone consist entirely of an avascular tissue composed of two types of fibre-like structures, which are coarse and longitudinally (parallel to the main axis of the element) oriented. These structures are differentiated on the basis of their optical properties under polarized light. Very thin fibrous strands are also observed in some regions. These small fibres are all oriented parallel to one another but perpendicular to the element main axis. Histological features of the primary bone tissue indicate that the sacral supraspinous rod corresponds to an ossified supraspinous ligament. The formation of this structure appears to have been a non-pathological metaplastic ossification, possibly induced by the continuous tensile forces applied to the element.
Fil: Cerda, Ignacio Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina. Universidad Nacional de Río Negro; Argentina
Fil: Casal, Gabriel. Universidad Nacional de la Patagonia; Argentina
Fil: Martínez, Rubén Darío. Universidad Nacional de la Patagonia ; Argentina
Fil: Ibiricu, Lucio Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
description Supraspinous ossified rods have been reported in the sacra of some derived sauropod dinosaurs. Although different hypotheses have been proposed to explain the origin ofthis structure, histological evidence has never been provided to support or reject any of them. In order to establish its origin, we analyse and characterize the microstructure of thesupraspinous rod of two sauropod dinosaurs from the Upper Cretaceous of Argentina. The supraspinous ossified rod is almost entirely formed by dense Haversian bone. Remains ofprimary bone consist entirely of an avascular tissue composed of two types of fibre-like structures, which are coarse and longitudinally (parallel to the main axis of the element) oriented. These structures are differentiated on the basis of their optical properties under polarized light. Very thin fibrous strands are also observed in some regions. These small fibres are all oriented parallel to one another but perpendicular to the element main axis. Histological features of the primary bone tissue indicate that the sacral supraspinous rod corresponds to an ossified supraspinous ligament. The formation of this structure appears to have been a non-pathological metaplastic ossification, possibly induced by the continuous tensile forces applied to the element.
publishDate 2015
dc.date.none.fl_str_mv 2015-10
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/11336/43912
Cerda, Ignacio Alejandro; Casal, Gabriel; Martínez, Rubén Darío; Ibiricu, Lucio Manuel; Histological evidence for a supraspinous ligament in sauropod dinosaurs; The Royal Society; Royal Society Open Science; 2; 10; 10-2015; 1-17
2054-5703
CONICET Digital
CONICET
url http://hdl.handle.net/11336/43912
identifier_str_mv Cerda, Ignacio Alejandro; Casal, Gabriel; Martínez, Rubén Darío; Ibiricu, Lucio Manuel; Histological evidence for a supraspinous ligament in sauropod dinosaurs; The Royal Society; Royal Society Open Science; 2; 10; 10-2015; 1-17
2054-5703
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1098/rsos.150369
info:eu-repo/semantics/altIdentifier/url/http://rsos.royalsocietypublishing.org/content/2/10/150369
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
dc.publisher.none.fl_str_mv The Royal Society
publisher.none.fl_str_mv The Royal Society
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 13.070432

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