%0 Journal Article %T Carbon isotope variations during ontogeny of Frasnian (Late Devonian) conodont Mehlina gradata %A Zhuravlev, A.V. %K conodonts, ontogeny, C-isotopes, ecology %J Vestnik of geosciences %D 2026 %N 0 %P 5 %I FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences"