The Pliocene Gastropoda (Mollusca) of Estepona, southern Spain. Part 25: Mitroidea and Turbinelloidea (Neogastropoda)

In this paper we continue to review the Mitroidea, family Mitridae Swainson, 1831 and Turbinelloidea, family Costellariidae MacDonald, 1860 of the Lower Piacenzian, Upper Pliocene of Estepona, southern Spain. In the Mitridae 20 species are recorded representing four genera, of which one is described as new: Episcomitra gonnieae nov. sp., and two are left in open nomenclature. Episcomitra pliotenuis nov. nom. is proposed for Mitra tenuis Bellardi, 1887, non Beyrich, 1854. This group is relatively thermophilic, and the assemblage of species is fairly typical for the tropical Pliocene Mediterranean-West African palaeobiogeographic province. No species survived to the present-day. Within the Costellariidae ten species are recorded representing six genera, of which one is described as new: Pusia ellenae nov. sp., and one is left in open nomenclature. Again, the species present are typical for the palaeobiogeographic province. Somewhat less thermophilic, two species survive in the Mediterranean today.