[1] Large areas of the reefs of the Dolomites suffered karstic erosion due to sea regression in the Anisian.

The Superior Member is a sequence of pseudoflysch, marl, limestone and mudrock (in this strata some Cipit Boulders occur).

The facies identified in San Cassiano Formation:[11] These facies are interpreted as the next deposit environments:[11] The Patch reefs from Valle di Rimbianco present a diverse fauna of fossilized calcitic sponges (Porifera), corals (Cnidaria), bivalves and gastropods (Mollusca), Brachiopoda and Echinodermata.

In the deep basin and continental slope facies the fauna consists only of ammonites and pseudoplanktonic bivalves, beside of allochthonous elements eroded from the carbonate platform (Cipit Boulders).

[2][6] The microbialites contained in these elements show a very good preservation and therefore are very useful as geochemical proxies to determine paleoenvironmental conditions of the carbonate platform.