Dendrogram resulted from cluster analysis based on the correlation coefficient of similarity for 43 ostracod species from 11 countries of the studied regions. Biofacies A represents common Albian-Cenomanian ostracods of Egypt and Israel (in this study: the Egyptian Type Fauna); biofacies B represents common Cenomanian ostracod species of Kuwait and Oman (in this study: the Arabian Type Fauna); biofacies C represents common Aptian-Albian ostracods of Lebanon and Iran (in this study: the Eastern Type Fauna); biofacies D represents common Cenomanian-Turonian ostracod assemblages of Morocco, Algeria, and Tunisia (in this study: the Western Type Fauna).