TY - JOUR AU - Chenarani, Atefeh AU - Shafiee Ardestani, Meysam AU - Vahidinia, Mohammad TI - Biocorrelation, Biostratigraphy and determination basal of the Aptian stage at Tirgan Formation , west of Kopeh-Dagh sedimentary basin, NE Iran JO - Iranian Journal of Petroleum Geology VL - 11 IS - 21 SP - 78 EP - 97 PY - 2022 DO - 10.52547/ispg.33928.11.21.78 ER -