A biostratigraphic contribution on the new age model for the middle Eocene deep-marine Ainsa Basin, Spanish Pyrenees with researchers from UCL, Neftex Petroleum, ExxonMobil Production Company and University of Oxford resulted in an improved chronostratigraphic control which enables correlations between submarine canyons and submarine-fans of the Ainsa and Jaca basins to be assessed. Our new age model provides a means of comparison of stratigraphic events with regional sections allowing a better understanding of the lateral and temporal evolution of these depositional systems from source-to-sink.