Dinos among the dunes: Dinoturbation in the Pirambóia Formation (Paraná Basin), São Paulo State and comments on cross-section tracks

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dc.contributor.authorChristofoletti, Beatriz [UNESP]
dc.contributor.authorPeixoto, Bernardo C.P.M.
dc.contributor.authorWarren, Lucas V. [UNESP]
dc.contributor.authorInglez, Lucas [UNESP]
dc.contributor.authorFernandes, Marcelo Adorna
dc.contributor.authorAlessandretti, Luciano
dc.contributor.authorAlexandre de Jesus Perinotto, José [UNESP]
dc.contributor.authorSimões, Marcello G. [UNESP]
dc.contributor.authorAssine, Mario L. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Federal de Uberlândia (UFU)
dc.date.accessioned2021-06-25T10:55:56Z
dc.date.available2021-06-25T10:55:56Z
dc.date.issued2021-08-01
dc.description.abstractSoft-sediment deformation structures are conspicuous features found in both ancient and modern, shallowly buried, loose, and water-saturated sediments related to diverse depositional environments. Numerous triggering mechanisms can induce their development, including seismicity, glaciotectonics, overload, and bioturbation. The presence of soft-sediment deformation in the Jurassic fluvial-eolian Pirambóia Formation has been known for a long time and was usually associated with seismic-induced triggers. Recently described synsedimentary structures in wet interdune deposits from the lower part of this unit, close to its type area in São Paulo State, southeastern Brazil, are now interpreted as true cross-section tracks produced by large tetrapods based on examples from the literature and morphological analyzes. Based on their age, size, and comparisons with dinosaur tracks described in Jurassic lithostratigraphic units from Paraná Basin in Brazil (Guará Formation) and Waterberg Basin (Etjo Formation), we suggest here, for the first time, that some of those deformational structures were produced by dinosaurs. Furthermore, the cross-section tracks from the Pirambóia Formation in São Paulo State exceed in size the tracks with therapsid affinity described in the Permian-Triassic unit in southern Brazil, hindering their full correlation. This finding may potentially represent the oldest evidence of the presence of dinosaurs in the São Paulo State territory, expanding our knowledge of the poorly known Jurassic tetrapod fauna of Brazil. Additionally, these cross-section tracks reinforce the possible correlation, at least in part, of the Pirambóia Formation in its northern occurrence (near to its type area) with the Jurassic Guará Formation from southern Brazil.en
dc.description.affiliationDepartamento de Geologia Instituto de Geociências e Ciências Exatas Universidade Estadual Paulista-UNESP, Avenida 24-A, 1515 Bela Vista, Cx. P. 178
dc.description.affiliationLaboratório de Paleoecologia e Paleoicnologia Departamento de Ecologia e Biologia Evolutiva Universidade Federal de São Carlos - UFSCar
dc.description.affiliationInstituto de Geografia Universidade Federal de Uberlândia, Rodovia LMG-746 Km 01
dc.description.affiliationSetor de Zoologia Instituto de Biociências Universidade Estadual Paulista-UNESP, Distrito de Rubião Junior, s/n, 510
dc.description.affiliationUnespDepartamento de Geologia Instituto de Geociências e Ciências Exatas Universidade Estadual Paulista-UNESP, Avenida 24-A, 1515 Bela Vista, Cx. P. 178
dc.description.affiliationUnespSetor de Zoologia Instituto de Biociências Universidade Estadual Paulista-UNESP, Distrito de Rubião Junior, s/n, 510
dc.description.sponsorshipAgência Nacional do Petróleo, Gás Natural e Biocombustíveis
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdCNPq: 141220/2018–0
dc.identifierhttp://dx.doi.org/10.1016/j.jsames.2021.103252
dc.identifier.citationJournal of South American Earth Sciences, v. 109.
dc.identifier.doi10.1016/j.jsames.2021.103252
dc.identifier.issn0895-9811
dc.identifier.scopus2-s2.0-85102867150
dc.identifier.urihttp://hdl.handle.net/11449/207484
dc.language.isoeng
dc.relation.ispartofJournal of South American Earth Sciences
dc.sourceScopus
dc.subjectDinosaur undertracks
dc.subjectJuro-cretaceous
dc.subjectSoft-sediment deformation
dc.subjectSW Gondwana
dc.titleDinos among the dunes: Dinoturbation in the Pirambóia Formation (Paraná Basin), São Paulo State and comments on cross-section tracksen
dc.typeArtigo
unesp.author.orcid0000-0002-1004-191X[1]
unesp.author.orcid0000-0001-6257-4243[2]
unesp.author.orcid0000-0002-5335-2750[5]

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