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dc.contributor.authorMastrantonio, Bianca Martinspt_BR
dc.contributor.authorBaczko, María Belén Vonpt_BR
dc.contributor.authorDesojo, Julia Brendapt_BR
dc.contributor.authorSchultz, Cesar Leandropt_BR
dc.date.accessioned2022-12-08T05:03:28Zpt_BR
dc.date.issued2019pt_BR
dc.identifier.issn0567-7920pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/252550pt_BR
dc.description.abstractPrestosuchus chiniquensis is the most famous “rauisuchian” described by Friedrich von Huene, eight decades ago, and several specimens have been assigned to this taxon since then. In the present contribution, we provide the first detailed description of a complete and very well preserved skull (including the braincase) assigned to Prestosuchus chiniquensis from the Dinodontosaurus Assemblage Zone of the Santa Maria Supersequence of southern Brazil. The detailed description of the skull of Prestosuchus chiniquensis, besides increasing the knowledge about this taxon, may help elucidate the taxonomic relationships of pseudosuchians even further, since most of the characters used in phylogenetic analyzes are cranial. The presence of the subnarial fenestra, a controvertial extra opening on the skull of “rauisuchians”, is thoroughly discussed considering the evidence provided by this new specimen. We consider that the small slit-opening between the premaxilla and the maxilla in Prestosuchus chiniquensis, can not safely be considered a true fenestra, but indicates more likely the existence of some degree of cranial kinesis between these elements which can result in different relative positions of the bones after definitive burial and fossilization, so that the size and shape of this opening is taphonomically controlled. Complementarily, the digital reconstruction of its cranial endocast was developed both from the observation of the preserved braincase and from CT scan images, which resulted in obtaining the first endocast known for a “rauisuchian”. The endocast of Prestosuchus chiniquensis exhibited some remarkable convergences with that of theropod dinosaurs, which could be a reflection of the similar niches they occupied, since “rauisuchians” were the top predators at the end of the Late Triassic, before the extinction of all non-crocodylomorph pseudosuchians.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofActa Palaeontologica Polonica. Varsóvia. Vol. 64, no. 1 (2019), p. 171-198pt_BR
dc.rightsOpen Accessen
dc.subjectCrânio : Anatomia & histologiapt_BR
dc.subjectArchosauriaen
dc.subjectPseudosuchiaen
dc.subjectRauisuchiapt_BR
dc.subjectLoricataen
dc.subjectNeuroanatomyen
dc.subjectTriassicen
dc.subjectLadinianen
dc.subjectCarnianen
dc.subjectBrazilen
dc.titleThe skull anatomy and cranial endocast of the pseudosuchid archosaur Prestosuchus chiniquensis from the Triassic of Brazilpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001153514pt_BR
dc.type.originEstrangeiropt_BR


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