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dc.contributor.author
Talevi, Marianella
dc.contributor.author
Fernández, Marta Susana
dc.date.available
2023-03-09T15:33:08Z
dc.date.issued
2012-03
dc.identifier.citation
Talevi, Marianella; Fernández, Marta Susana; Unexpected skeletal histology of an ichthyosaur from the middle jurassic of patagonia: Implications for evolution of bone microstructure among secondary aquatic tetrapods; Springer; Naturwissenschaften; 99; 3; 3-2012; 241-244
dc.identifier.issn
0028-1042
dc.identifier.uri
http://hdl.handle.net/11336/190086
dc.description.abstract
During the Mesozoic, one of the most significant evolutionary processes was the secondary adaptation of tetrapods to life in water. Several non-related lineages invaded from the terrestrial realms and from the oceans of the entire world. Among these lineages, ichthyosaurs were particularly successful. Advance parvipelvian ichthyosaurs were the first tetrapods to evolve a fish-shaped body profile. The deep skeletal modifications of their bodies, as well as their biology, depict advance ichthyosaurs as the paradigm of secondary adaptation of reptiles tomarine life. Functional inferences point to themas off-shore cruising forms, similar to a living tuna, and some of them were capable of deep diving. Bone histology of some genera such as Temnodontosaurus, Stenopterygius, Ichthyosaurus, and Caypullisaurus, characterized by overall cancellous bone, is consistent with the idea of a fish-shaped ichthyosaurs as fast and far cruisers. Here, we provide histological examination of the ribs of the Middle Jurassic parvipelvian Mollesaurus. Contrasting with the bone histology of other parvipelvian, Mollesaurus ribs are characterized by a compact and thick cortex. Our data indicate that the rib cage was heavy and suggest that not all advanced ichthyosaurs were fast cruisers. The compact and dense ribs in these parvipelvian show that advance ichthyosaurs were ecologically more diverse than previously thought and that the lightening of the skeleton reversed, as also occurred in the evolution of cetacean, at least once along the evolutionary history of ichthyosaurs.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
BONE HISTOLOGY
dc.subject
ICHTHYOSAURS
dc.subject
MIDDLE JURASSIC
dc.subject
MOLLESAURUS
dc.subject.classification
Paleontología
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Unexpected skeletal histology of an ichthyosaur from the middle jurassic of patagonia: Implications for evolution of bone microstructure among secondary aquatic tetrapods
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-03-07T11:26:25Z
dc.journal.volume
99
dc.journal.number
3
dc.journal.pagination
241-244
dc.journal.pais
Alemania
dc.description.fil
Fil: Talevi, Marianella. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
dc.description.fil
Fil: Fernández, Marta Susana. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
dc.journal.title
Naturwissenschaften
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s00114-012-0886-4
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00114-012-0886-4
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