El Amri, Zaineb, y Dalila Zaghbib-turki. 2004. «Biostratigraphic Characterisation of the Coniacian/Santonian transition in the Ellès and El Kef sections (northern Tunisia)». Journal of Iberian Geology 31 (1): 99-111. https://revistas.ucm.es/index.php/JIGE/article/view/JIGE0505120099A.