Modified laminar bone in Ampelosaurus atacis and other Titanosaurs (Sauropoda): implications for life history and physiology.

<h4>Background</h4>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...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Nicole Klein, P Martin Sander, Koen Stein, Jean Le Loeuff, Jose L Carballido, Eric Buffetaut
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/46ecb1cee6594e85bd899ee515be0b83
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:46ecb1cee6594e85bd899ee515be0b83
record_format	dspace
spelling	oai:doaj.org-article:46ecb1cee6594e85bd899ee515be0b832021-11-18T07:18:32ZModified laminar bone in Ampelosaurus atacis and other Titanosaurs (Sauropoda): implications for life history and physiology.1932-620310.1371/journal.pone.0036907https://doaj.org/article/46ecb1cee6594e85bd899ee515be0b832012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22615842/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>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.<h4>Methodology/principal findings</h4>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).<h4>Conclusions/significance</h4>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.Nicole KleinP Martin SanderKoen SteinJean Le LoeuffJose L CarballidoEric BuffetautPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 5, p e36907 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Nicole Klein P Martin Sander Koen Stein Jean Le Loeuff Jose L Carballido Eric Buffetaut Modified laminar bone in Ampelosaurus atacis and other Titanosaurs (Sauropoda): implications for life history and physiology.
description	<h4>Background</h4>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.<h4>Methodology/principal findings</h4>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).<h4>Conclusions/significance</h4>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.
format	article
author	Nicole Klein P Martin Sander Koen Stein Jean Le Loeuff Jose L Carballido Eric Buffetaut
author_facet	Nicole Klein P Martin Sander Koen Stein Jean Le Loeuff Jose L Carballido Eric Buffetaut
author_sort	Nicole Klein
title	Modified laminar bone in Ampelosaurus atacis and other Titanosaurs (Sauropoda): implications for life history and physiology.
title_short	Modified laminar bone in Ampelosaurus atacis and other Titanosaurs (Sauropoda): implications for life history and physiology.
title_full	Modified laminar bone in Ampelosaurus atacis and other Titanosaurs (Sauropoda): implications for life history and physiology.
title_fullStr	Modified laminar bone in Ampelosaurus atacis and other Titanosaurs (Sauropoda): implications for life history and physiology.
title_full_unstemmed	Modified laminar bone in Ampelosaurus atacis and other Titanosaurs (Sauropoda): implications for life history and physiology.
title_sort	modified laminar bone in ampelosaurus atacis and other titanosaurs (sauropoda): implications for life history and physiology.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/46ecb1cee6594e85bd899ee515be0b83
work_keys_str_mv	AT nicoleklein modifiedlaminarboneinampelosaurusatacisandothertitanosaurssauropodaimplicationsforlifehistoryandphysiology AT pmartinsander modifiedlaminarboneinampelosaurusatacisandothertitanosaurssauropodaimplicationsforlifehistoryandphysiology AT koenstein modifiedlaminarboneinampelosaurusatacisandothertitanosaurssauropodaimplicationsforlifehistoryandphysiology AT jeanleloeuff modifiedlaminarboneinampelosaurusatacisandothertitanosaurssauropodaimplicationsforlifehistoryandphysiology AT joselcarballido modifiedlaminarboneinampelosaurusatacisandothertitanosaurssauropodaimplicationsforlifehistoryandphysiology AT ericbuffetaut modifiedlaminarboneinampelosaurusatacisandothertitanosaurssauropodaimplicationsforlifehistoryandphysiology
_version_	1718423659820875776

Modified laminar bone in Ampelosaurus atacis and other Titanosaurs (Sauropoda): implications for life history and physiology.

Ejemplares similares