Radiolarian assemblages from the Jurassic cherts of Albania: new data.

We examined Radiolarian assemblages of Jurassic age in four sections of cherts from the sedimentary cover of the Mirdita ophiolites (Kalur Cherts) and in two sections of chert levels intercalated in carbonate successions of the Mesozoic Albanide continental margin. In the Kalur Cherts the ages of the radiolarian assemblages range from latest Bajocian-early Bathonian (UAZ. 5), to middle Bathonian - middle Callovian early Oxfordian (UAZ. 6-8). In the sections from the carbonate successions the ages range from middle Bathonian (UAZ. 6), to late Bathonian-early Callovian - middle Callovian-early Oxfordian (UAZ. 7-8).