EARLY MIOCENE BRYOZOA OF GEBEL GHARRA, NORTHWEST GULF OF SUEZ, EGYPT

Journal Article

• المجلة \ الصحيفة: Egyptian Journal of Geology
• رقم العدد: 2
• رقم الإصدار السنوي: 43
• الصفحات: 353-375

مستخلص المنشور

Twenty-six bryozan species have been identified from the early Miocene sediments of Gebel Gharra (Gharra
Formation). Among them five species are cyclostomes and twenty-one species are cheilostomes. Three species
are believed to be new: Membranipora gharranensis, Ramphonotous crenulata; and Schizoretepora hamzai.
Nearly two thirds of the recorded species have the encrusting zoarial growth-form. The paleoecological
investigation of the studied bryozoans, and the accompanied microfacies has concluded reef to back-reef
depositional environment. Also, water depth is shallow, with an estimating depth range of20-40 m, moderate
turbulence, and low rate of sedimentation.