Teeth complexity, hypsodonty and body mass in Santacrucian (Early Miocene) notoungulates (Mammalia)

cic.isFulltexttruees
cic.isPeerReviewedtruees
cic.lugarDesarrolloUniversidad Nacional de La Plataes
cic.versioninfo:eu-repo/semantics/submittedVersiones
dc.date.accessioned2019-05-10T11:19:25Z
dc.date.available2019-05-10T11:19:25Z
dc.identifier.urihttps://digital.cic.gba.gob.ar/handle/11746/9962
dc.titleTeeth complexity, hypsodonty and body mass in Santacrucian (Early Miocene) notoungulates (Mammalia)en
dc.typeArtículoes
dcterms.abstractNotoungulates, native South American fossil mammals, have been recently objective of several palaeoecological studies. Ecomorphology and biomechanics of the masticatory apparatus, together with micro and mesowear analyses on tooth enamel, were applied in order to understand their palaeobiology. In particular, the relationship between some dental traits (hypsodonty, occlusal surface area and complexity) and body mass is still poorly understood. These features were measured by means of the hypsodonty index (HI), occlusal surface area (OSA) and tooth area (OTA), enamel crest complexity (ECC) and length (OEL). The relationships between these indices were evaluated in five pan-contemporaneous Santacrucian Notoungulata genera from Patagonia: Adinotherium and<em>Nesodon</em> (Toxodontia), <em>Interatherium</em>, <em>Protypotherium</em> and <em>Hegetotherium</em> (Typotheria). While OSA, OTA and OEL were size dependent and strongly correlated, HI and ECC were size independent. All notoungulates analysed have very hypsodont teeth, indicating high rates of tooth wear in response to an increase of abrasives consumed with the food; their tooth occlusal area and complexity could be related to chewing efforts associated with the toughness of the plants consumed. HI, OSA and ECC were considered useful for paleoecological reconstructions, but the results presented here show that these three features are integrated as a complex, so should not be evaluated separately.en
dcterms.creator.authorCassini, Guillermo H.es
dcterms.creator.authorHernández Del Pino, Santiagoes
dcterms.creator.authorMuñoz, Nahuel A.es
dcterms.creator.authorAcosta, M. V. Walter G.es
dcterms.creator.authorFernández, Mercedeses
dcterms.creator.authorBargo, María Susanaes
dcterms.creator.authorVizcaíno, Sergio F.es
dcterms.extent12 p.es
dcterms.isPartOf.issuevol. 106es
dcterms.isPartOf.seriesEarth and Environmental Science Transactions of the Royal Society of Edinburghes
dcterms.issued2017-02-10
dcterms.languageIngléses
dcterms.licenseAttribution-NonCommercial-NoDerivatives 4.0 Internacionales
dcterms.spatialRegión Pampeanaes
dcterms.subjectTafonomíaes
dcterms.subjectEstratigrafíaes
dcterms.subjectMamíferoses
dcterms.subjectHolocenoes
dcterms.subject.materiaZoología, Ornitología, Entomología, Etologíaes
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