Fig. 2From: New insights on the Early Cretaceous (Hauterivian–Barremian) Urgonian lithostratigraphic units in the Jura Mountains (France and Switzerland): the Gorges de l’Orbe and the Rocher des Hirondelles formationsAmmonite zones according to Reboulet et al. (2018) and biostratigraphic distribution of main groups collected in the Hauterivian–Barremian series of Jura MountainsBack to article page