000170991 001__ 170991
000170991 005__ 20260430151736.0
000170991 0247_ $$2doi$$a10.1111/pala.70057
000170991 0248_ $$2sideral$$a149081
000170991 037__ $$aART-2026-149081
000170991 041__ $$aeng
000170991 100__ $$aRotatori, Filippo Maria
000170991 245__ $$aThe early origin of Iguanodontia: new insights into the macroevolution, diversity and biogeography of the clade
000170991 260__ $$c2026
000170991 5060_ $$aAccess copy available to the general public$$fUnrestricted
000170991 5203_ $$aIguanodontia (Dinosauria, Ornithischia) is a speciose group of herbivorous dinosaurs that include the famous genus Iguanodon, one of foundational members of the clade Dinosauria. Despite their very long history of research, several aspects of their systematic relationships and their evolutionary history remain somewhat nebulous. There is currently a lack of consensus between different phylogenetic matrices due mainly to: (1) undersampling of postcranial characters; and (2) the absence of several key taxa. We assembled a data matrix from pre-existing datasets, integrating our observations on several overlooked species (mainly from Europe) and extensively sampling cranial and postcranial characters, thereby creating one of the most complete datasets for iguanodontian dinosaurs to date. We performed a series of phylogenetic analyses, employing maximum parsimony and Bayesian inference, and an historical biogeographic analysis. Overall congruent topologies between the two methods recovered, for the first time, a new clade of high-sailed styracosternans here named Ouranosauria. We ran different Bayesian inference analyses, employing morphoclock and fossilized birth–death models. Some of the tip-dated analyses, indicated an Early to Middle Jurassic origin of Iguanodontia during a palaeoclimatically (hyperthermal) and palaeogeographically (continental fragmentation) dynamic context. According to this scenario, the Iguanodontian major radiation could be tracked back to the Pliensbachian–Toarcian, pre-dating by 16 million years the first ichnological evidence attributed to this clade. Furthermore, the diversification of all the major clades occurred by the Late Jurassic, then experienced local extinction events in different areas during the Early Cretaceous. Prior to the Jurassic–Cretaceous transition, iguanodontians spread globally.
000170991 536__ $$9info:eu-repo/grantAgreement/EC/H2020/947921/EU/Mapping biodiversity cradles and graves/MAPAS$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 947921-MAPAS$$9info:eu-repo/grantAgreement/ES/MICINN/FJCI-2020-044836-I$$9info:eu-repo/grantAgreement/ES/MICINN/PID2021-122612OB-I00$$9info:eu-repo/grantAgreement/ES/MICINN/PID2024-158833OB-I00$$9info:eu-repo/grantAgreement/ES/MICINN/RYC2021-034473-I
000170991 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000170991 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000170991 700__ $$aChiarenza, Alfio Alessandro
000170991 700__ $$aFanti, Federico
000170991 700__ $$0(orcid)0000-0002-7210-1033$$aMoreno-Azanza, Miguel$$uUniversidad de Zaragoza
000170991 7102_ $$12000$$2655$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Paleontología
000170991 773__ $$g69, 2 (2026), e70057 [32 pp.]$$pPalaeontology$$tPalaeontology$$x0031-0239
000170991 8564_ $$s9945674$$uhttps://zaguan.unizar.es/record/170991/files/texto_completo.pdf$$yVersión publicada
000170991 8564_ $$s2765948$$uhttps://zaguan.unizar.es/record/170991/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000170991 909CO $$ooai:zaguan.unizar.es:170991$$particulos$$pdriver
000170991 951__ $$a2026-04-30-13:58:35
000170991 980__ $$aARTICLE