Solitary cystiphor of the corals of North Asia

Тhe work summarizes all known data of the Cystiphor Rugosae frorn North-East of USSR and of the Sibirian pIatforrn. Terrninology and Morfology as much as еvоlution of Cystiphyllidae during the whole of paleontological history аге considered. Тhe соrnrnоп Systern for the Silurian and Devonian cystiphors is firstly given оп the base of analysis of the rnorfofunctional patterts. Тhe analysis of the stratigrafical and geografical spreading of these Rugosae and also of their monografical description is carried out.