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More than 500 specimens were collected from a coral reef with a thickness of 4-6 m in the Devonian sediments of Gereek section located 75 Km, northern Kerman city and studied for corals at the level of genera and species. The reef mainly consists of Rugosa and Tabulate corals. Among these two groups of corals, 9 genera and species were identified from the coral reef of Gereek section including Disphyllum aespitosum, Hexagon aria hexagona, Macgeea ponderosa, Argutastrea sp., Column aria sp.,Alveolites sp. Chaetetes sp, Thamnopora sp. and Michelina sp. Among the above mentioned coral fossils the geneus of Disphyllum is more abundant than rest, the reef of Gereek is characterized by well-developed of main reef, and unrecognizable of fore-reef and back reef, In addition to the coral fossils, other fauna occur that include brachiopoda, gastropoda and bryozoans, but the stromatoporoid is very rare. The studied sediments of the Gereek bearing reef section have been assigned to Lower Paleozoic by other geologists but this study reveals that the sediments of bearing reef related to that Early Late Devonian (Frasnian). Recent studied of conodonts such as Icriodus alternatus, polygnathus churkini and polygnathus cohlertica also suggest frasnianage for the strata.