Abstract
New radiolarians from the Upper Cretaceous (Coniacian-Santonian) siliceous beds outcropping northwest of Saratov, at the villages of Mezino-Lapshinovka and Vishnevoe are described. Three new species, Alievium olferievi sp. nov., A. rozanovi sp. nov., and Pseudoaulophacus alekseevi sp., are established. They are distinguished by the pseudoaulophacoid star-shaped structure of the shell wall. The terminology and taxonomic characteristics used in the description of new taxa are discussed. Radiolarian species are of great importance for stratification and correlation of Cretaceous deposits.
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