Oxygen–carbon isotope composition of Middle Jurassic–Cretaceous molluscs from the Saratov–Samara Volga region and main climate trends in the Russian Platform–Caucasus ZakharovYuri D. SeltserVladimir B. KakabadzeMikheil V. SmyshlyaevaOlga P. SafronovPeter P. 2019 Table S3. Carbon and oxygen isotope composition of calcitic bivalve shells from the Bathonian, Tithonian and Campania of the Saratov–Samara area. H — height of the shell.