Pectínidos pliocenos de la Cuenca de Vejer (Cádiz, SO de España)

Abstract

This study has been carried out in pectinids (Bivalvia, Mollusca) of pliocene sediments from Vejer de la Frontera basin (Cádiz, SW Spain). The main results of this research has been the taxonomic determination of 8 genders and 13 species, rising previous pectinids information in this zone. The appearance of M. pesfelis, F. flexuosus, P. excisum, P. jacobaeus y P. maximus allows us to determine for this sediments a Pliocene age, as microfauna to. Thus, the occurrence of M. latissima, P. benedictus y P. excisum make possible to reduce upper chronostratigraphic range to near 3,0 Ma. The main pectinids assemblages and their taphonomic signature can be understood as a shallow detritic environmental under the storm influence, as a beach-dune systems and sub-tidal environments, with develop of bars and channels.