Coral-bryozoan-microencruster boundstone in Millerella sp. Zone (lower Bashkirian) and in Profusulinella daiyamensis Zone (upper Bashkirian).

Highly diverse reef-building community including rugose and auloporidid corals, bryozoans and microencrusters. 
Also associates with some chaetetids and other sponges (sphinctozoans/inozoans). 
Taisyakphyllum and Pseudopavona dominant
Second reef phase in Omi Limestone, represented by the problematic skeletal organism-microencruster community, is developed in the Millerella sp. Zone to the Akiyoshiella ozawai Zone (Bashkirian to lowermost Moscovian),