Institution: | 1.Egyptian Petroleum Research Institute, Nasr City, 11727, Egypt ;;2.Geology and Geophysics Department, College of Science, King Saud University, Riyadh, Saudi Arabia ;;3.Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria ;;4.Geology Department, Faculty of Science, Minia University, Minya, 61519, Egypt ; |