الملخص

Four samples between the interval (854–1157) m from the well KH 5/1 were studied palynologically, they represent Ora and Harur Formations. These samples yielded well preserved and highly diversed miospores mainly belonging to the miospore zone Spelaeotriletes pretiosus – Raistrickia clavata Higgs et al., 1988 of Late Tournaisian. Assemblages recovered show the dominance of Lycopods plants which flourished in warm and humid condition. The presence of Acritarch indicates deposition of the formations in near shore environment.