A new Middle Pleistocene mollusc fauna from Soucy (Yonne France): biogeography and palaeoecology.

Fine alluvial deposits of Middle Pleistocene age at Soucy (Yonne) have yiel ded abundant and original terrestrial and aquatic malacofaunas including an extinct species of pulmonate gastropod: Aegopis klemmi. This species was k nown only from early Middle Pleistocene interglacial deposits in central Eu rope. Composition and evolution of malacological assemblages indicate inter glacial conditions. The occurrence of several species of modem central Euro pean distribution suggests more continental conditions than at present. (C) 2001 Editions scientifiques et medicales Elsevier SAS.