Anarak Mountains in the North East of Isfahan province is located in central Iran micro-continent. In this area Carboniferous strata is attributable to the Zaladu informal Formation. This sequence has numerous coral fossils that exist in the 4 horizons. In this study, 4 Species belonging to 4 genera of rogusa and tabulata corals have been identified including: cerioid rugose colonies of Ivanovia, Petalaxis, tabulata fasciculate colonies of Multithecopora and solitary rugose of Haplolasma. The solitary rugose corals are more abundant. This fauna suggested the Late Carboniferous (Gzhelian stage) in age for the coral horizons. Despite these, in present research, genus of Ivanovia, Petalaxis are reported from Iran for the first time.

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