The fossil content is dominated by rudist biostromes. The rudists are represented by Durania cornupastoris, Praeradiolites ponsi, Radiolites praesauvagesi, Radiolites radiosus, Radiolites trigeri, Biradiolites quadratus, Biradiolites angulosus, Vaccinites praepetrocoriensis, Vaccinites petrocoriensis, and Hippurites requieni var. subpolygonia. The benthic fossils present indicate a calm and not very deep depositional environment; they comprise lamellibranchs, acteonellidae, nerineoidea, chaetetids, miliolids, and others. In some places, the top part undergoes a facies change to more agitated conditions, especially towards the West and near Périgueux (deposition of cream-coloured, coarse, bioclastic limestones, which are much less recrystallised; their grain size is over 2 mm and they can show large cross-beds).
