Oxygen–carbon isotope composition of Middle Jurassic–Cretaceous molluscs from the Saratov–Samara Volga region and main climate trends in the Russian Platform–Caucasus

Table S2. Carbon and oxygen isotope composition of belemnite rostra from the Bathonian, Tithonian, Aptian, Turonian, Campanian and Maastrichtian of the Saratov–Samsra area. D — diameter of the rostrum.