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dc.contributor.author
Klein, Nicole
dc.contributor.author
Sander, P. Martin
dc.contributor.author
Stein, koen
dc.contributor.author
Loeuff, L. Jean.
dc.contributor.author
Carballido, José Luis
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dc.contributor.author
Buffetaut, Éric
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dc.date.available
2023-04-27T11:11:03Z
dc.date.issued
2012-05
dc.identifier.citation
Klein, Nicole; Sander, P. Martin; Stein, koen; Loeuff, L. Jean.; Carballido, José Luis; et al.; Modified laminar bone in Ampelosaurus atacis and other titanosaurs (Sauropoda): Implications for life history and physiology; Public Library of Science; Plos One; 7; 5; 5-2012; 1-17
dc.identifier.issn
1932-6203
dc.identifier.uri
http://hdl.handle.net/11336/195577
dc.description.abstract
Background: Long bone histology of the most derived Sauropoda, the Titanosauria suggests that titanosaurian long bone histology differs from the uniform bone histology of basal Sauropoda. Here we describe the long bone histology of the titanosaur Ampelosaurus atacis and compare it to that of basal neosauropods and other titanosaurs to clarify if a special titanosaur bone histology exists. Methodology/Principal Findings: Ampelosaurus retains the laminar vascular organization of basal Sauropoda, but throughout most of cortical growth, the scaffolding of the fibrolamellar bone, which usually is laid down as matrix of woven bone, is laid down as parallel-fibered or lamellar bone matrix instead. The remodeling process by secondary osteons is very extensive and overruns the periosteal bone deposition before skeletal maturity is reached. Thus, no EFS is identifiable. Compared to the atypical bone histology of Ampelosaurus, the large titanosaur Alamosaurus shows typical laminar fibrolamellar bone. The titanosaurs Phuwiangosaurus, Lirainosaurus, and Magyarosaurus, although differing in certain features, all show this same low amount or absence of woven bone from the scaffolding of the fibrolamellar bone, indicating a clear reduction in growth rate resulting in a higher bone tissue organization. To describe the peculiar primary cortical bone tissue of Phuwiangosaurus, Ampelosaurus, Lirainosaurus, and Magyarosaurus, we here introduce a new term, "modified laminar bone" (MLB). Conclusions/Significance: Importantly, MLB is as yet not known from extant animals. At least in Lirainosaurus and Magyarosaurus the reduction of growth rate indicated by MLB is coupled with a drastic body size reduction and maybe also a reduction in metabolic rate, interpreted as a result of dwarfing on the European islands during the Late Cretaceous. Phuwiangosaurus and Ampelosaurus both show a similar reduction in growth rate but not in body size, possibly indicating also a reduced metabolic rate. The large titanosaur Alamosaurus, on the other hand, retained the plesiomorphic bone histology of basal neosauropods.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Public Library of Science
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Ampelosaurus
dc.subject
Titanosauria
dc.subject
Histology
dc.subject
modified laminar bone
dc.subject.classification
Paleontología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Modified laminar bone in Ampelosaurus atacis and other titanosaurs (Sauropoda): Implications for life history and physiology
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-04-26T10:55:36Z
dc.journal.volume
7
dc.journal.number
5
dc.journal.pagination
1-17
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
San Francisco
dc.description.fil
Fil: Klein, Nicole. Universitat Bonn; Alemania
dc.description.fil
Fil: Sander, P. Martin. Universitat Bonn; Alemania
dc.description.fil
Fil: Stein, koen. Universitat Bonn; Alemania
dc.description.fil
Fil: Loeuff, L. Jean.. Musée Des Dinosaures; Francia
dc.description.fil
Fil: Carballido, José Luis. Provincia del Chubut. Fundación Egidio Feruglio. Museo Paleontológico ; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Buffetaut, Éric. Centre National de la Recherche Scientifique; Francia
dc.journal.title
Plos One
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0036907
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1371/journal.pone.0036907
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