Procladocora-biolithite in lower part of Auradu Fm.
Corals encrusted by cyanobacterial crusts (Tubiphytes-like).
No algae present.
The abundance of microbial encrusting associations
(primarily "cyanobacteria" or "cyanophyta") as well as the occurrence of incrusting ostreids indicates a "lagoonal" environment with periodic hypersaline conditions