1. Department of Geology, Faculty of Science, Helwan University, Helwan, Cairo, Egypt
2. Department of Zoology, Faculty of Science, Beni-Suef University, Beni Suef, Egypt
3. Department of Zoology, Faculty of Science, King Saud University, Riyadh, Saudi Arabia
4. Boone Pickens School of Geolog, Oklahoma State University, USA