Turan Platform
Isolated intra-basin dome-like reef
Main reef builders are: CORALS: Rhipidogyra, Stylina, Cryptocoenia, Cladophyllia, Thecosmilia, Thamnasteria, Microsolena, Calamophyllia. Rarely: Montlivaltia, Actinastrea, Heliocoenia, Stilosmilia, Comoseris, Anabacia.
RED ALGAE: Solenopora, rarely Marinella, Ungdarella, Melobesia, Petschoria, Donezella, Komia, Lithophyllum.
CYANOBACTERIA: Girvanella, Ortonella, Renalcis, Rothpletzella, stromatolites.
Sometimes abundant stromatoporoids, chlorophyta, porifera, bryozoans and others.