@article{paperid:1061531, author = {Vahidinia, Mohammad and میثم شفیعی اردستانی}, title = {Biostratigraphy of the Abderaz Formation based on heterohelicids, at six stratigraphical sections in east and center of the Kopeh-Dagh sedimentary basin, northeastern of Iran}, journal = {International Journal of Geosciences}, year = {2017}, volume = {8}, number = {4}, month = {April}, issn = {2156-8359}, pages = {623--645}, numpages = {22}, keywords = {Kopeh-Dagh sedimentary basin; Abderaz Formation; Biostratigraphy; Serial planktonic foraminifera.}, }