The rise of feathered dinosaurs: Kulindadromeus zabaikalicus, the oldest dinosaur with ‘feather-like’ structures

Show simple item record Cincotta, Aude Pestchevitskaya, Ekaterina B. Sinitsa, Sofia M. Markevich, Valentina S. Debaille, Vinciane Reshetova, Svetlana A. Mashchuk, Irina M. Frolov, Andrei O. Gerdes, Axel Yans, Johan Godefroit, Pascal 2019-11-20T06:05:36Z 2019-11-20T06:05:36Z 2019-02-01
dc.identifier.citation Cincotta, A., Pestchevitskaya, E.B., Sinitsa, S.M., Markevich, V.S., Debaille, V., Reshetova, S.A., Mashchuk, I.M., Frolov, A.O., Gerdes, A., Yans, J. and Godefroit, P., 2019. The rise of feathered dinosaurs: Kulindadromeus zabaikalicus, the oldest dinosaur with ‘feather-like’structures. PeerJ, 7, (e6239). DOI:10.7717/peerj.6239 en
dc.identifier.volume 7 en
dc.identifier.startpage 1 en
dc.identifier.endpage 20 en
dc.identifier.doi 10.7717/peerj.6239 en
dc.description.abstract Diverse epidermal appendages including grouped filaments closely resembling primitive feathers in non-avian theropods, are associated with skeletal elements in the primitive ornithischian dinosaur Kulindadromeus zabaikalicus from the Kulinda locality in south-eastern Siberia. This discovery suggests that “feather-like” structures did not evolve exclusively in theropod dinosaurs, but were instead potentially widespread in the whole dinosaur clade. The dating of the Kulinda locality is therefore particularly important for reconstructing the evolution of “feather-like” structures in dinosaurs within a chronostratigraphic framework. Here we present the first dating of the Kulinda locality, combining U-Pb analyses (LA-ICP-MS) on detrital zircons and monazites from sedimentary rocks of volcaniclastic origin and palynological observations. Concordia ages constrain the maximum age of the volcaniclastic deposits at 172.8 ± 1.6 Ma, corresponding to the Aalenian (Middle Jurassic). The palynological assemblage includes taxa that are correlated to Bathonian palynozones from western Siberia, and therefore constrains the minimum age of the deposits. The new U-Pb ages, together with the palynological data, provide evidence of a Bathonian age—between 168.3 ± 1.3 Ma and 166.1 ± 1.2 Ma—for Kulindadromeus. This is older than the previous Late Jurassic to Early Cretaceous ages tentatively based on local stratigraphic correlations. A Bathonian age is highly consistent with the phylogenetic position of Kulindadromeus at the base of the neornithischian clade and suggests that cerapodan dinosaurs originated in Asia during the Middle Jurassic, from a common ancestor that closely looked like Kulindadromeus. Our results consequently show that Kulindadromeus is the oldest known dinosaur with “feather-like” structures discovered so far. en
dc.description.sponsorship 17-04-01582; 18-17-00038 en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher PeerJ en
dc.rights © 2019 Cincotta et al en
dc.rights.uri en
dc.subject Feathered dinosaurs en
dc.subject Palynology en
dc.subject U-Pb dating en
dc.subject Jurassic of Siberia en
dc.title The rise of feathered dinosaurs: Kulindadromeus zabaikalicus, the oldest dinosaur with ‘feather-like’ structures en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Aude Cincotta, School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland. +353-21-490-3000 Email: en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.contributor.funder Fonds De La Recherche Scientifique - FNRS en
dc.contributor.funder Russian Foundation for Basic Research en
dc.contributor.funder Russian Science Foundation en
dc.contributor.funder Siberian Branch, Russian Academy of Sciences en
dc.contributor.funder European Research Council en
dc.description.status Peer reviewed en
dc.identifier.journaltitle PeerJ en
dc.internal.IRISemailaddress en
dc.identifier.articleid e6239 en
dc.relation.project info:eu-repo/grantAgreement/EC/FP7::SP2::ERC/336718/EU/Initial Solar System Composition and Early Planetary Differentiation/ISOSYC en
dc.identifier.eissn 2167-8359

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© 2019 Cincotta et al Except where otherwise noted, this item's license is described as © 2019 Cincotta et al
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