1. LR138ES80, Faculty of Sciences of Gabes, University of Gabes, Gabes, Tunisia
2. Institute of Arts and Crafts, University of Kairouan, Kairouan, Tunisia
3. Exploration Department, Egyptian Petroleum Research Institute, Nasr City, Egypt
4. Department of Earth, Faculty of Sciences of Gabes, University of Gabes, Tunisia
5. Geology and Geophysics Department, College of Science, King Saud University, Riyadh, Saudi Arabia
6. Geology Department, Faculty of Science, Minia University, El-Minia, Egypt
7. Department of Paleontology, University of Vienna, Vienna, Austria