During the course of the 2005 campaign on the paleontological deposit that was characterised by the presence of nothosaurs and placodontia (marine reptiles typical of the Triassic era) the terrain and rocky fragments removed by stream water were studied. A part of the terrain which had formed on the main fossiliferous outcrop was removed; inspection continued on the fan of debris which had formed below the outcrop and was partly stabilised by the vegetation; an examination was made of the area around the outcrop which aimed to establish the probable lateral extension of the fossiliferous section.

The site age had previously been identified as lower Carnian on the basis of geological studies of the zone and the stratigraphy of the Dolomites, as well as the presence of the few foraminifers found in the thin sections. Recent data from the area of Dogna showed that in northern Friuli the last substantial unit of carbonaceous shelf before the Dolmia Principale did not reach the Carnian level. Moreover, the stratotype at the base of the Carnian has still not been formally established. The position of the fossiliferous strata of Fusea, situated immediately above the last substantial unit of carbonaceous shelf before the Dolmia Principale and at the base of the sequence of black limestones, usually known as “carnian”, means that they can now be reasonably dated to between the end of the Ladinian time and the beginning of the Carnian time. (MiBAC)