2 research outputs found

    Les Cricetodontini du bassin de Calatayud–Daroca (Espagne) : description taxonomique et mise à jour biostratigraphique

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    Received 6 June 2014, Accepted 28 July 2014, Available online 16 September 2014[EN] The most updated stratigraphical distributions of the Cricetodontini from the Calatayud¿Daroca Basin are presented. Cricetodon sansaniensis (local biozone F, MN6, middle Aragonian) and Cricetodon jotae (local biozone G1, G2 and G3, MN6-MN7/8, Middle¿Upper Aragonian) from the middle Miocene are described and discussed. Generally, the genera of Cricetodontini were used to define large time intervals, whereas the species were neglected in the local biostratigraphical studies. The results presented herein show that, for the Calatayud¿Daroca Basin, most of the stratigraphical distributions of the species of Cricetodontini are strongly linked with the local biozonation. That reveals that they could be used as good biostratigraphical indicators. Moreover, the unusually long local biozone G3 could be redefined and subdivided based on the distributions of the four species of Cricetodontini present in it. However, it is recommended to complete the study of the whole rodent fauna before proposing a new biozonation.[FR] Une mise à jour détaillée des distributions stratigraphiques des espèces de Cricetodontini présentes dans le bassin de Calatayud–Daroca est proposée. Les espèces Cricetodon sansaniensis (biozone locale F, MN6, Aragonien moyen) et Cricetodon jotae (biozones locales G1, G2 et G3, MN6-MN7/8, Aragonien moyen et supérieur) du Miocène moyen sont décrites et discutées. Généralement, les genres de Cricetodontini ont été utilisés dans la définition des grands intervalles de temps, tandis que les espèces ont été négligées dans les études biostratigraphiques locales. Les résultats présentés ici montrent que la plupart des distributions stratigraphiques des espèces de Cricetodontini du bassin de Calatayud–Daroca sont étroitement liées à la biozonation locale. En conséquence, leur importance est soulignée dans le cadre d’études biostratigraphiques à une échelle fine. De plus, la biozone locale G3, d’une durée inhabituellement longue, pourrait être redéfinie et subdivisée en fonction de la distribution des quatre espèces de Cricetodontini présentes. Cependant, une étude détaillée de la faune complète des rongeurs est nécessaire avant qu’on puisse proposer une nouvelle biozonation.The Spanish MICINN / MINECO projects CGL2004-02094/BTE, CGL2007-65208, CGL2008-04200/BTE; CGL2011-28877 supports this study.IG-P holds a JAE-Doc contract (CSIC program “Junta para la Ampliación de Estudios”) co-funded by the European Social Fund and acknowledges financial support of the MINECO project CGL2010-21672.This work is a contribution by the Research group UCM-910607 “Evolution of Caenozoic Mammals and Continental Palaeoenvironments”.Peer Reviewe

    Cricetodontini from the Calatayud–Daroca Basin (Spain): A taxonomical description and update of their stratigraphical distributions

    No full text
    The most updated stratigraphical distributions of the Cricetodontini from the Calatayud–Daroca Basin are presented. Cricetodon sansaniensis (local biozone F, MN6, middle Aragonian) and Cricetodon jotae (local biozone G1, G2 and G3, MN6-MN7/8, Middle–Upper Aragonian) from the middle Miocene are described and discussed. Generally, the genera of Cricetodontini were used to define large time intervals, whereas the species were neglected in the local biostratigraphical studies. The results presented herein show that, for the Calatayud–Daroca Basin, most of the stratigraphical distributions of the species of Cricetodontini are strongly linked with the local biozonation. That reveals that they could be used as good biostratigraphical indicators. Moreover, the unusually long local biozone G3 could be redefined and subdivided based on the distributions of the four species of Cricetodontini present in it. However, it is recommended to complete the study of the whole rodent fauna before proposing a new biozonatio
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