The Campanian-Maastrichtian series of Dj. Gaâga (Tebessa, NE of Algeria) : quantitative and qualitative analysis and palaeoenvironmental interpretation - Benmansour Sana (7. INTERNANATIONAL EARTH SCIENCE COLLOQUIUM ON THE AEGEAN REGION. Izmir/ Turkiye. 7-11 october 2019, 2019)