Several biostromal horizons. Total thickness 30m.
Only one oyster species strongly predominant (Ostrea cretacea).
Other bivalves are: Exogyra upatoiensis, Lopha ucheensis, Anomia preolmstedi
Micrfosossils: Only ostracods. 
Naticid gastropod drillholes in oysters up to 2 mm in diameter.
Brackish environment with low sedimentation rate.