Two stratigraphic sections of Kazhdumi Formation were selected form Sivand (165m.) and Kuh-e-khanekat (108m.) Areas for Pelecypoda avd Echinoides study. Recognized taxones of Bivalvia and Echinoides are following as: Neithea striatocostata, Exogyra undata, Isocardia aff. neglecta, Astarte sp., Opis sp., Leptosolen sp.,Trigonia crenulifera, Exogyra flabellata ,Salenidia boulei, Pliotoxaster cf. lyonsi ,Epiaster whitei, Inoceramus sp.Assemblage- zones of the mentioned taxones and comparison of them with accompanied zones (foraminifers), age of studied sediments is Albian to Early Cenomanian.