Siliciclastic sequence. Coastal fringing reefs.
Gechang
Crinoidal limestone at base.
Thamnopora framestones in dolomites.
Tabulates: Thamnopora, Favolistes, Halysites protarea.
Muth 
Coral framestone with stromatoporoids
Stromatopora, Cyathophyllum, Halysites, Favosites, Propora, Parachaetetes