Within the almost purely dolomitic units of the Triassic of the Austroalpin
e realm (Ladinian to Norian), the Cluozza Member is characterized as a cons
picuously siliciclastic interval in the upper part of the Raibl Group. It r
epresents a well-defined correlateable event in the Austroalpine Upper Tria
ssic of Graubunden. Based on the present palynological evidence it can be a
ssigned to the Early Carnian (Julian). The composition of the palynological
assemblages is closely comparable to those of the upper Lunzer beds in the
Alpine realm and to the Schilfsandstein in the Germanic basin. The palynol
ogical and lithological evidence indicates that these sediments have been d
eposited under humid conditions. The data also suggest that that Cluozza Me
mber corresponds to the transgressive phase of an Early Carnian sequence (C
ar1 or Car2).
The dinoflagellate cysts observed in the studied assemblages are not only t
he oldest found in the Northern Hemisphere but represent worldwide the olde
st dinoflagellate records from low latitude sites.