Five new palynological sequences in the Bresse valley (France), covering Reuverian, Praetiglian, Tiglian and Eburonian‐Waalian times, yielded rodent teeth of theMimomys occitanus‐savinilineage evolving in Eurasia by phyletic gradualism. For the first time the west European palynological zonation is correlated with the Eurasiatic rodent one, leading to the following attributions:Mimomys occitanus:Reuverian;Mimomys polonicus: Praetiglian to early Tiglian;Mimomyspliocaenicus: Tiglian;Mimomys ostramosensis:Eburonian to early Waalian;Mimomys savinioccurring from Waalian to Cromerian. As a result, the Neogene biozones MN15 to MN17 can be defined by nine new subdivisi