ln this paper the buildups and the associated facies belonging to the Upper part of the Monte Facito Formation are described. They show a first stage of colonization by encrusting organisms; the growth of the carbonate complex was locally interrupted by terrigenous deposition. The drowning of the buildups was caused by an increase of subsidence with the deposition of Ammonitico Rosso facies and then of radiolarite marls. The upper part of the Mt. Facito Formation is referred to the Ladinian on the basis of foraminifers, brachiopods, calcareous sponges, dasycladacean algae, palynomorphs and ammonites.