Addendum to the chemostratigraphy of the uppermost Callovian–middle Oxfordian interval of the Tethyan Fatricum domain (Tatra Mts, Krížna Nappe, southern Poland)

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‰) remain constant with highly positive values. Therefore, excursion identified is interpreted as a record upper global phenomenon. In this interval, significant increase CaCO 3 recorded, which accompanies facies change ribbon siliceous shale partings calcareous rare intercalations. abrupt may reflect turning point Early production recovery marine factory.