Literatura científica selecionada sobre o tema "Paléohistologie"
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Artigos de revistas sobre o assunto "Paléohistologie"
de Ricqlès, Armand. "Paléohistologie et paléobiochimie des vertébrés dans les Annales de Paléontologie". Annales de Paléontologie 92, n.º 2 (abril de 2006): 187–96. http://dx.doi.org/10.1016/j.annpal.2006.03.009.
Texto completo da fonteLaurin, Michel, e Jorge Cubo. "Progrès récents en paléohistologie : un hommage à une génération de paléohistologistes français". Comptes Rendus Palevol 15, n.º 1-2 (janeiro de 2016): 1–7. http://dx.doi.org/10.1016/j.crpv.2015.10.001.
Texto completo da fonteJentgen-Ceschino, Benjamin. "From bone palaeohistology to insularity: the palaeobiological archive as a witness to insular evolution". Bulletin de la Société Royale des Sciences de Liège, 2022, 168–98. http://dx.doi.org/10.25518/0037-9565.11072.
Texto completo da fonteTeses / dissertações sobre o assunto "Paléohistologie"
Olivier, Chloé. "Phylogeny, paleobiogeography, and paleophysiology of the Triassic dicynodonts (Therapsida, Anomodontia) : contributions of the Laotian and Moroccan forms". Electronic Thesis or Diss., Sorbonne université, 2020. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2020SORUS399.pdf.
Texto completo da fonteDicynodonts represent an emblematic Permian-Triassic (P-Tr) taxa to survive the big crisis at the end of Permian. The evolution of Triassic dicynodonts and their recovery conditions are still unclear. This work focused on the Laotian and Moroccan forms. The post-crisis recovery of dicynodonts would appear to be earlier as supported by the description of two new Laotian species (Counillonia superoculis and Repelinosaurus robustus) in Early Triassic. Despite their non-consensual phylogenetic relationships, they support the survivorship of multiple lineages across the P-Tr boundary. Paleophysiological models inferred high metabolism in Permian and Triassic studied dicynodonts, refuting the hypothesis of a high metabolism to mainly explain differential survival beyond the crisis. They also highlighted a unique acquisition of the endothermy in Synapsida occurring at least in middle Permian at the Neotherapsida node. Considering the age and the terrestrial lifestyle of dicynodonts, a terrestrial connection between the Indochina Block and Pangea could thus be interpreted at least in late Permian-Early Triassic. A new dicynodont postcranial material discovered in Morocco was studied and a taxonomic revision of the Moroccan forms was made. Moghreberia nmachouensis was considered as valid and clearly distinguished from Placerias. The restudy of the cranial material of Azarifeneria did not allow distinguishing it from other Triassic genera. In addition to Moghreberia, a second morphotype, more robust, could be noticed in the postcranial material. The large size of Moghreberia and of the second big morphotype confirmed an increase of the body size in dicynodonts during the Triassic
Legendre, Lucas. "Les crocodiles sont-ils devenus secondairement ectothermes ? : étude paléohistologique". Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066307/document.
Texto completo da fonteArchosaurs are a clade of vertebrates that includes birds, crocodiles, and numerous fossil groups. This clade has been a matter of debate among paleontologists for decades concerning the evolution of thermometabolism in its different lineages. The classical hypothesis considers that only modern birds are true endotherms, whereas all other archosaurs are ectotherms. Bone histology allows to study several traits linked to bone growth rate and thermometabolism, otherwise impossible to estimate on fossil specimens; for this reason, we used characters measured on long bone histological sections.In the first section, we extensively reviewed the measure of phylogenetic signal for osteohistological features in two clades of vertebrates, which was then used to define the methodology for building our predictive models.After a preliminary study during which we built a predictive model for bone growth rate, we built a global model to predict the metabolic rate of our fossil specimens, using both histological features and phylogenetic information for each specimen. Our results show that a majority of archosaurs in our sample were endotherms. This implies that the last common ancestor of archosaurs was likely an endotherm, and that modern crocodiles became secondarily ectothermic, probably in response to their aquatic environment. More specific studies on pseudosuchians should allow to precisely identify the level of the phylogenetic tree at which the ectothermic state was acquired, as well as adaptive constraints behind this acquisition
Legendre, Lucas. "Les crocodiles sont-ils devenus secondairement ectothermes ? : étude paléohistologique". Electronic Thesis or Diss., Paris 6, 2014. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2014PA066307.pdf.
Texto completo da fonteArchosaurs are a clade of vertebrates that includes birds, crocodiles, and numerous fossil groups. This clade has been a matter of debate among paleontologists for decades concerning the evolution of thermometabolism in its different lineages. The classical hypothesis considers that only modern birds are true endotherms, whereas all other archosaurs are ectotherms. Bone histology allows to study several traits linked to bone growth rate and thermometabolism, otherwise impossible to estimate on fossil specimens; for this reason, we used characters measured on long bone histological sections.In the first section, we extensively reviewed the measure of phylogenetic signal for osteohistological features in two clades of vertebrates, which was then used to define the methodology for building our predictive models.After a preliminary study during which we built a predictive model for bone growth rate, we built a global model to predict the metabolic rate of our fossil specimens, using both histological features and phylogenetic information for each specimen. Our results show that a majority of archosaurs in our sample were endotherms. This implies that the last common ancestor of archosaurs was likely an endotherm, and that modern crocodiles became secondarily ectothermic, probably in response to their aquatic environment. More specific studies on pseudosuchians should allow to precisely identify the level of the phylogenetic tree at which the ectothermic state was acquired, as well as adaptive constraints behind this acquisition