New isotope (δ 13 C, δ 18 O of bulk carbonates) and carbonate content data from the uppermost Callovian–middle Oxfordian radiolarites Fatricum domain belonging to north-western segment Tethys are added previously published data. The new supplement Długa Valley section, most nearly complete Bajocian–lower Tithonian section Krížna Nappe in Tatra Mts. Callovian Lower C values (from 3.1 3.3‰) remai...