Document Type : Original Research Paper


1 Ph.D. Student, Department of Geology, North Tehran Branch, Islamic – Azad University, Tehran, Iran

2 Assistant Professor, Department of Geology , Islamic – Azad University , Shiraz Branch, Shiraz, Iran


In this research two stratigraphic sections of Lower Cretaceouse to Upper Jurassic sedimentary (Surmeh and Fahliyan Formation in Folded-Zagros Zone) have been selected. Based on microfacies studies (in 400 thin-sections) three species of Ichnofossils microcoprolites from Crustaceans related as the Follow: Palaxius decaochetarius, Helicerina siciliana, Palaxius tetraochetarius, palaxius isp. In general, considering Ichnotaxons studies, two assemblage-zones were identified for microcoprolites Crustaceans. Assemblage-zone (No:1) of Tithonian to Berriasian and assemblage-zone (No:2)  whichis lated of Valanginian, taxons  Helicerina isp. Assemblage-zone (No:2)  which is related.                                                                                       


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