In this paper we review the Heterobranchia (excluding Pyramidelloidea) of the Lower Piacenzian, Upper Pliocene of Estepona, southern Spain. 59 species are reviewed representing 37 genera. Voluta exilis Eichwald, 1829 is a junior homonym of Voluta exilis melin, 1791, therefore Ringicula guzhovi nov. nom. is proposed for the Paratethyan species. Tornatina hemipleura Fontannes,1880 is considered a junior subjective synonym of Acteocina knockeri (E.A. Smith, 1872). This group includes species with mostly planktotrophic development that are widely dispersed geographically and long lived `stratigraphically. This is especially true of the Architectonicidae. Hence, in contrast to other parts of this series, none of the species are endemic to the Estepona assemblages. Both shallow and deeper-water taxa are represented, and the assemblage is similar to that found in the tropical Mediterranean Pliocene of Italy (Mediterranean ecostratigraphic unit MPPMU1).","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"The Pliocene Gastropoda (Mollusca) of Estepona, southern Spain. 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