The first ornithosuchid from Brazil and its macroevolutionary and phylogenetic implications for Late Triassic faunas in Gondwana

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dc.contributor.authorMuller, Rodrigo T.en
dc.contributor.authorBelen von Baczko, M.en
dc.contributor.authorDesojo, Julia B.en
dc.contributor.authorNesbitt, Sterling J.en
dc.contributor.departmentGeosciencesen
dc.date.accessioned2020-05-28T13:26:47Zen
dc.date.available2020-05-28T13:26:47Zen
dc.date.issued2020-01-31en
dc.description.abstractOrnithosuchidae is one of the most enigmatic clades of Triassic pseudosuchians. The group is composed by three carnivorous species that were excavated from Upper Triassic beds of Scotland and Argentina. We describe the first ornithosuchid from the Upper Triassic sediments of Brazil and explore its phylogenetic affinities and implications for the evolution of the group. Dynamosuchus collisensis gen. et sp. nov. was found as the sister taxon of the Argentinean form Venaticosuchus rusconii. These relationships reject a potential endemic radiation of ornithosuchids from the Ischigualasto-Villa Union Basin and would better support multiple diversification events. Our findings with ornithosuchids is consistent with the pattern reported for proterochampsid and erpetosuchid archosaurifonns from Ischigualasto-Villa Union and the Parana basins. In addition, the presence of an ornithosuchid in the Late Triassic of Brazil suggests that ornithosuchids were more widespread than previously thought in the southern hemisphere. The new ornithosuchid further demonstrates a faunistic link between the Argentinean and Brazilian basins during the Carnian. Finally, the discovery of the new species provides the first clue of a putative necrophagous vertebrate from the oldest dinosaur-bearing beds and expands our knowledge regarding the trophic structure of the Late Triassic of Brazil.en
dc.description.notesWe thank the colleagues of CAPPA/UFSM for their help during fieldwork. We also extend our gratitude to the editor Stephen Brusatte and Davide Foffa (bothe School of GeoSciences, University of Edinburgh, Edinburgh, UK) for comments and suggestions that improved the qual-ity of this manuscript. We thank the Willi Henning Society, for the gratuity of TNT software. This work was partially supported by the Agencia Nacional de Promocion Cientifica y Tecnologica (PICT 20160159 to PB and JBD).en
dc.description.sponsorshipAgencia Nacional de Promocion Cientifica y TecnologicaANPCyT [PICT 20160159]en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.4202/app.00652.2019en
dc.identifier.eissn1732-2421en
dc.identifier.issn0567-7920en
dc.identifier.issue1en
dc.identifier.urihttp://hdl.handle.net/10919/98583en
dc.identifier.volume65en
dc.language.isoenen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectArchosauriaen
dc.subjectPseudosuchiaen
dc.subjectOrnithosuchidaeen
dc.subjectbiogeographyen
dc.subjectphylogenyen
dc.subjectCarnianen
dc.subjectSanta Maria Formationen
dc.subjectSouth Americaen
dc.titleThe first ornithosuchid from Brazil and its macroevolutionary and phylogenetic implications for Late Triassic faunas in Gondwanaen
dc.title.serialActa Palaeontologica Polonicaen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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