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Late Berriasian macro- and microfossil assemblages from the Ticha Formation (Eastern Fore-Balkan Mts, Bulgaria) were studied. Eight ammonite taxa, including coiled and straight forms, were described. In addition, 23 calpionellid, 12 calcareous dinocyst and 4 foraminiferal taxa were identified. The “Thurmanniceras” otopeta ammonite Subzone of the Tirnovella alpillensis Zone, the calpionellid Oblonga Subzone of the Calpionellopsis Zone and the Stomiosphaera wanneri calcareous dinocyst Zone were indicated. The advent of Bochianites neocomiensis, the late occurrence of Bochianites (?) ambiguus and the earliest appearance of Phylloceras (Hypophylloceras) tethys tethys was documented in the Eastern Fore-Balkan Mts area. The calpionellid-spicule microfacies was also recognized. The fossil data allow a correlation with similar coeval localities of the European Tethyan Realm. Pelagic macro- and microfossils and the microfacies are indicative of deeper-water basin depositional settings.

Uppermost Berriasian macro- and microfossil assemblages from the Ticha Formation of the Eastern Fore-Balkan Mts (Bulgaria)