Fossil mollusks of the marine Miocene of lpún Island, Southern Chile

Abstract

Twenty seven species of fossil mollusks from lpún lsland (Los Chonos Archipelago, Southern Chile) are reponed; descriptive and taxonomic remarks are given for each one of them. Illustrations of some specimens are also added. The assemblage has nearly one hundred specimens distributed in 11 bivalves species, 15 gastropods and one cephalopod. An Early to Middle Miocene age is suggested for the faunistic association, founded on its similitude with those of the adjoining Stokes lsland and with the fossils recognised as proper of the Navidad Member of the Navidad Formation in its typical locality in central Chile, which is considered as the stratigraphic unit of reference for the study of invertebrate fossils of the Chilean marine Miocene.