Cainozoic Research, 16(2), pp. 109-219, December 2016 109 The lower Pliocene gastropods of Le Pigeon Blanc (Loire- Atlantique, north west France), 2. Caenogastropoda* Frank Van Dingenen1, Luc Ceulemans2 & Bernard M. Landau3, 4 1 Cambeenboslaan A 11, B-2960 Brecht, Belgium; email:
[email protected] 2 Avenue Général Naessens de Loncin 1, B-1330 Rixensart, Belgium; email:
[email protected] 3 Naturalis Biodiversity Center, P.O. Box 9517, 2300 RA Leiden, Netherlands; Instituto Dom Luiz da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal; and International Health Centres, Av. Infante de Henrique 7, Areias São João, P-8200 Albufeira, Portugal; email:
[email protected] 4 Corresponding author Received 1 June 2016, revised version accepted 20 September 2016. In this paper we review the Caenogastropoda of the Zanclean lower Pliocene assemblage of Le Pigeon Blanc, Loire-Atlantique department, which we consider the ‘type’ locality for Assemblage III of Van Dingenen et al. (2015). Ninety-one species are recorded, of which 17 are new: Bittium lozoueti nov. sp., Bittium gliberti nov. sp., Tympanotonos redoniensis nov. sp., Oligodia palumbina nov. sp., Cochlis robbai nov. sp., Cochlis pedrialii nov. sp., Payraudeautia pigeonblancensis nov. sp., Alvania calasi nov. sp., Alvania dissensia nov. sp., Alvania merlei nov. sp., Alvania zbyszewskii nov. sp., Crisilla ariejansseni nov. sp., Rissoa pouweri nov. sp., Caecum aartseni nov. sp., Nystia guillotini nov. sp., Aclis pacaudi nov. sp., Niso dollfusi nov. sp. This includes the first European Neogene record for the genus Tympanotonos. Macromphalina bouryi (de Morgan, 1915) is a secondary homonym of Macromphalina bouryi (Dautzenberg, 1912) and renamed Macromphalina massicardi nom.