On some interesting species of Mollusca Gastropoda in the Pliocene of Romagna (Italy) with description of Skenea enricoi n. sp.

In the present paper, the discovery of further specimens of Trochaclis isabellae Tabanelli, Bongiardino et Scarponi, 2017 (Gastropoda Trochaclididae) in the Zanclean of Monte Castellaccio (Ravenna, Brisighella, Pietramora, Italy) is reported. The discovery in Pliocene outcrops of some specimens determined as Acrochalix cf. callosa Bouchet et Warén, 1986 (Gastropoda Eulimidae), a deep-sea Atlantic species, is also reported. Furthermore, Skenea enricoi n. sp. (Gastropoda Skeneidae) is described from the Zanclean of Monte Cerreto (Forlì-Cesena, Castrocaro Terme, Italy). This new species is doubtfully placed in the genus Skenea J. Fleming, 1825 because it is morphologically atypic due to the globular outline and squared opening of the shell. Skenea enricoi n. sp. also differs from congeneric species for the globular outline and sunken suture.