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

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dc.contributor.authorCincotta, Aude
dc.contributor.authorPestchevitskaya, Ekaterina B.
dc.contributor.authorSinitsa, Sofia M.
dc.contributor.authorMarkevich, Valentina S.
dc.contributor.authorDebaille, Vinciane
dc.contributor.authorReshetova, Svetlana A.
dc.contributor.authorMashchuk, Irina M.
dc.contributor.authorFrolov, Andrei O.
dc.contributor.authorGerdes, Axel
dc.contributor.authorYans, Johan
dc.contributor.authorGodefroit, Pascal
dc.contributor.funderFonds De La Recherche Scientifique - FNRSen
dc.contributor.funderRussian Foundation for Basic Researchen
dc.contributor.funderRussian Science Foundationen
dc.contributor.funderSiberian Branch, Russian Academy of Sciencesen
dc.contributor.funderEuropean Research Councilen
dc.date.accessioned2019-11-20T06:05:36Z
dc.date.available2019-11-20T06:05:36Z
dc.date.issued2019-02-01
dc.description.abstractDiverse 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.sponsorship17-04-01582; 18-17-00038en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleide6239en
dc.identifier.citationCincotta, 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.6239en
dc.identifier.doi10.7717/peerj.6239en
dc.identifier.eissn2167-8359
dc.identifier.endpage20en
dc.identifier.journaltitlePeerJen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/9156
dc.identifier.volume7en
dc.language.isoenen
dc.publisherPeerJen
dc.relation.projectinfo:eu-repo/grantAgreement/EC/FP7::SP2::ERC/336718/EU/Initial Solar System Composition and Early Planetary Differentiation/ISOSYCen
dc.relation.urihttps://peerj.com/articles/6239/
dc.rights© 2019 Cincotta et alen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectFeathered dinosaursen
dc.subjectPalynologyen
dc.subjectU-Pb datingen
dc.subjectJurassic of Siberiaen
dc.titleThe rise of feathered dinosaurs: Kulindadromeus zabaikalicus, the oldest dinosaur with ‘feather-like’ structuresen
dc.typeArticle (peer-reviewed)en
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