جستجوی مقالات مرتبط با کلیدواژه "microcoprolites of crustaceans" در نشریات گروه "زمین شناسی"

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.