“Biostratigraphy and Paleoecology Study of the Coniacain, Santonian and Campanian Sediments by Using the Calcareous Nannofossils in the Southern Palmyridian Chain, Syria”, مجلة العلوم الأساسية, vol. 37, no. 3, Jul. 2021, Accessed: Jun. 18, 2026. [Online]. Available: https://journal.damascusuniversity.edu.sy/index.php/basj/article/view/328