Abdulkarim Abdula, R. and Ahmed Al-Badrani, O. 2023. Stratigraphical Position of Piran Limestone Unit in Piran Area, Erbil Governorate, Kurdistan Region, Iraq: Insights from Occurrence of Calcareous Nannofossils. Iraqi National Journal of Earth Science (INJES). 23, 2 (Dec. 2023), 37–46. DOI:https://doi.org/10.33899/earth.2023.138635.1049.