Foraminifers from the Bashkirian Stage (Middle Carboniferous) Deposits of the Southern Part of the Cis-Uralian Foredeep

Аннотация

The results of the study of the taxonomic composition of foraminifers from the Bashkirian deposits of the southern part of the Cis-Uralian Foredeep are presented. The material comes from deep boreholes drilled in the Akobinsk area (the eastern part of Orenburg Region). The characteristics of the foraminiferal assemblages of Plectostaffella bogdanovkensis–Semistaffella variabilis, Pseudostaffella antiqua, and Pseudostaffella praegorskyi−Staffellaeformes staffellaeformis zones are presented. Foraminifers are confined to the oolitic and bioclastic grainstones of the shallow-water shelf high-energy zone.