Al-Shareefi, I., K. Khalaf, S. and A. Al-Eisa, M. 2010. Paleoecology of some Upper Cretaceous Formations from Selected Wells Northwest and Middle Iraq. Iraqi National Journal of Earth Science (INJES). 10, 2 (Dec. 2010), 67–96. DOI:https://doi.org/10.33899/earth.2010.5523.