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dc.contributor.authorTomassini, Rodrigo Leandro
dc.contributor.authorManera, Teresa
dc.contributor.authorVisconti, Graciela
dc.contributor.authorMontalvo, Claudia Inés
dc.date.accessioned2020-12-05T15:06:15Z
dc.date.available2020-12-05T15:06:15Z
dc.date.issued2014
dc.identifier.issn1851-8044
dc.identifier.urihttps://repo.unlpam.edu.ar/handle/unlpam/6851
dc.description.abstractWe describe and analyze the mineralogical, geochemical and paleohistological characteristics present in hemimandibles of Paedotherium bonaerense (Ameghino) (Mammalia, Notoungulata, Hegetotheriidae). Remains were recovered from floodplain deposits of the Monte Hermoso Formation (early Pliocene). Francolite is the main mineral component in all hemimandibles, evidencing compositional changes in the internal crystalline structure during fossil-diagenesis. The similarity in the chemical composition of the fossils and the hosting rocks suggests that the enrichment of the remains with new elements was due to direct exchange with the sediments in which they were buried. Original bone microstructure shows good preservation, only affected by permineralization and microfissures. Manganese and iron oxides are the most abundant minerals infilling microstructural features and microfissures. The dark color identified on the outer surface of some remains is related to precipitation of manganese oxides. The results obtained allow us to establish the processes affecting the remains before and after burial, and thus interpret the different taphonomic histories. This work provides new information on a issue usually not considered in studies on vertebrate communities from the South American Neogene and at the same time it establishes a framework for the analysis of assemblages with similar characteristics.
dc.format.extentp. 385-395
dc.language.isoeng
dc.publisherA Gondwanan Paleontological Journal
dc.sourceAmeghiniana. 2014; vol.51 no.5
dc.titleMineralogy, geochemistry and paleohistology of pliocene mammals from the monte hermoso formation (argentina). paedotherium bonaerense (notoungulata, hegetotheriidae) as a case study
dc.typeartículo
dc.unlpam.subtypeArtículos
dc.unlpam.instituciondeorigenFacultad de Ciencias Exactas y Naturales
dc.unlpam.accessrestrictedAccess
dc.unlpam.filiacionTomassini, Rodrigo Leandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Geológico del Sur; Argentina.
dc.unlpam.filiacionTomassini, Rodrigo Leandro. Universidad Nacional del Sur; Argentina.
dc.unlpam.filiacionManera, Teresa. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Geológico del Sur; Argentina.
dc.unlpam.filiacionVisconti, Graciela. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales; Argentina.
dc.unlpam.filiacionMontalvo, Claudia Inés. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales; Argentina.
dc.subject.keywordTaphonomy
dc.subject.keywordMammals
dc.subject.keywordPaedotherium bonaerense
dc.subject.keywordPliocene
dc.subject.keywordArgentina


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