The Aragonian and Vallesian high-resolution micromammal succession from the Calatayud-Montalbán Basin (Aragón, Spain)

We present an updated taxonomy and faunal distribution of the micromammal fossil record from the Aragonian and lower Vallesian of the Calatayud-Montalbán Basin. The analysed record includes the orders Rodentia, Eulipotyphla, and Lagomorpha. The pattern of species turnover showsseven major faunal events,which are correlated to major climate changes based on marine stable oxygen and carbon isotope records. The episodesδ 18OMi-2 and Mi-3 are significantly correlated with major micromammal turnover at the boundaries between lower and middle Aragonian and middle and upper Aragonian, respectively. Our resultssupport the existence of a selective turnover during the Aragonian and lower Vallesian

Succession haute résolution des micromammifères de l’Aragonien et du Vallésien dans le bassin de Calatayud-Montalbán (Aragon, Espagne)

[EN] We present an updated taxonomy and faunal distribution of the micromammal fossil record from the Aragonian and Lower Vallesian of the Calatayud-Montalbán Basin. The analysed record includes the orders Rodentia, Eulipotyphla, and Lagomorpha. The pattern of species turnover shows seven major faunal events, which are correlated with major climate changes based on marine stable oxygen and carbon isotope records. Episodes δ18O Mi-2 and Mi-3 are significantly correlated with major micromammal turnover at the boundaries between the Lower and Middle Aragonian and the Middle and Upper Aragonian, respectively. Our results support the existence of a selective turnover during the Aragonian and Lower Vallesian.[FR] Ce travail actualise la taxonomie et la distribution faunique du registre fossile des petits mammifères du bassin de Calatayud-Montalbán de l’Aragonien au Vallésien inférieur. Les ordres Rodentia, Eulipothyphla et Lagomorpha sont inclus dans l’étude. Le modèle de renouvellement faunique est analysé et expliqué en relation avec les changements climatiques globaux. Sept événements fauniques principaux ont été reconnus et corrélés aux changements climatiques majeurs, grâce aux enregistrements isotopiques marins (oxygène et carbone). Les événements δ18O Mi-2 et Mi-3 sont significativement corrélés aux renouvellements fauniques qui touchent les micromammifères, respectivement aux limites de l’Aragonien inférieur/moyen et moyen/terminal. La présente analyse corrobore l’existence d’un renouvellement faunique sélectif au cours de l’Aragonien et du Vallésien inférieur.The Spanish MICINN/MINECO projects CGL2004-02094/BTE, CGL2007- 65208, CGL2008-04200/BTE; CGL2011-28877 support this study.Peer Reviewe