M. Al-Mutwali, M. and S. Abawi, T. 2003. Planktonic foraminifera and biostratigraphy of the Jaddala Formation (Eocene), Western Iraq. Iraqi National Journal of Earth Science (INJES). 3, 1 (Dec. 2003), 67–86. DOI:https://doi.org/10.33899/earth.2003.36685.