Abstract
Studies on the Onzole Formation outcropping close to the Camarones village (Esmeraldas Province, Northwestern Ecuador) have been carried out. Analyses on foraminifer, otolith and mollusc assemblages have shown an age referable to the Early Pliocene and a bathyal environment. These communities correspond to those of the modern Tropical East Pacific Province. However in the ichthyofauna some taxa, today related to the cool California Current, occur.
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