In this paper we review the Heterobranchia (in part) of the Tortonian upper Miocene (Assemblage I of Van Dingenen et al., 2015) of northwestern France. Twenty-three species are recorded, of which four are described as new; Ammonicera oliveri nov. sp., Ebala ornatissima nov. sp., Coenaculum boucheti nov. sp., and ‘Acteon’ distinctus nov. sp.

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Cainozoic research

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Bernard M. Landau, Luc Ceulemans, & Frank van Dingenen. (2020). The upper Miocene gastropods of northwestern France, 6.Heterobranchia. Cainozoic research, 20(2), 257–278.