Illustration of the microbial and metazoan buildups of the Oligo-Miocene visited outcrops and quarries following the classification for the macrofabrics. A. Flat macrofabrics (Grand Gandaillat quarry). B. Cauliflower (Grand Gandaillat quarry). C. Panorama of the Créchy quarry showing the relationships between the buildups and the surrounding marls and palustrine carbonate deposits; Domes passing upward to cones. D. Coalescent columns inclined in an ENE direction (Créchy quarry).