RT info:eu-repo/semantics/article T1 Chronostratigraphy and new vertebrate sites from the upper Maastrichtian of Huesca (Spain), and their relation with the K/Pg boundary A1 Puértolas Pascual, E. . A1 Arenillas, I. . A1 Arz, J.A. . A1 Calvín Ballester, Pablo A1 Ezquerro, L. . A1 García Vicente, C. . A1 Pérez Pueyo, M. . A1 Sánchez Moreno, Elisa María A1 Villalaín Santamaria, Juan José A1 Canudo, J.I. . K1 K/Pg boundary K1 Maastrichtian K1 Magnetostratigraphy K1 Biostratigraphy K1 Vertebrates K1 Pyrenees K1 Physics K1 Paleontology K1 Física K1 Paleontología AB The transitional-continental facies of the Tremp Formation within the South-Pyrenean Central Unit (Spain) contain one of the best continental vertebrate records of the Upper Cretaceous in Europe. This Pyrenean area is therefore an exceptional place to study the extinction of continental vertebrates across the Cretaceous/Paleogene (K/Pg) boundary, being one of the few places in Europe that has a relatively continuous record ranging from the upper Campanian to lower Eocene. The Serraduy area, located on the northwest flank of the Tremp syncline, has seen the discovery of abundant vertebrate remains in recent years, highlights being the presence of hadrosaurid dinosaurs and eusuchian crocodylomorphs. Nevertheless, although these deposits have been provisionally assigned a Maastrichtian age, they have not previously been dated with absolute or relative methods. This paper presents a detailed stratigraphic, magnetostratigraphic and biostratigraphic study for the first time in this area, making it possible to assign most vertebrate sites from the Serraduy area a late Maastrichtian age, specifically within polarity chron C29r. These results confirm that the vertebrate sites from Serraduy are among the most modern of the Upper Cretaceous in Europe, being very close to the K/Pg boundary. PB Elsevier SN 0195-6671 YR 2018 FD 2018-09 LK http://hdl.handle.net/10259/4784 UL http://hdl.handle.net/10259/4784 LA eng NO Spanish Ministry of Economy and Competitiveness (grant numbers CGL2014-53548-P, CGL2015-64422-P and CGL2017-85038-P), cofinanced by the European Regional Development Fund; and by the Department of Education and Science of the Aragonese Government (grant numbers DGA groups H54 and E05), cofinanced by the European Social Fund (ESF). The paleomagnetic study was possible thanks to the complementary grants (beneficiaries of FPU, grant number CGL2010-16447/BTE: Brief Stays and Temporary Transfers, year 2015) supported by the Spanish Ministry of Culture, Education and Sports; and the Laboratory of paleomagnetism of the University of Burgos (Spain). Eduardo Puértolas Pascual is the recipient of a postdoctoral grant (SFRH/BPD/116759/2016) funded by the Fundação para a Ciência e Tecnologia (FCT-MCTES). DS Repositorio Institucional de la Universidad de Burgos RD 26-abr-2024