Youngest stromatoporoid biostromes worldwide.
Shallow inner ramp setting (transition to outer ramp). 
Mixed-carbonate-siliciclastic ramp.
Medium diversity: Five massive growing genera and one branching form. Framestones absent.
Some Syringopora (tabulate corals).
Rare algae: Girvanella, kamaenid algae, Solenopora.
Tiny tubular borings in some stromatoporoids.