Crustacean Microcoprolites from the Upper Jurassic - Lower Cretaceous of the Northern East and East Shiraz (Fars Province)

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) which is lated of Valanginian، taxons Helicerina isp. Assemblage-zone (No: 2) which is related.