A. AL-Hasson, M. and D. Nader, A. 2006. New Insertae Sedis Genus Angelucysta from the Lower Carboniferous Dinantian of Iraq. Rafidain Journal of Science. 17, 1 (Jan. 2006), 32–37. DOI:https://doi.org/10.33899/rjs.2006.43264.