Title:
Evolyutsiya i morfologicheskie preobrazovaniya radiolyarii i ammonoidei v Uralskom Okeane v kamennougol'nykh period.
[In Russian with short English abstract.: Evolution and morphological changes in Radiolarians and Ammonoids in the Uralian Ocean].
Abstract: Analysis of the evolution of the Carboniferous radiolarians and ammonoids has shown that both groups, at that time, inhabited relatively shallow epicontinental seas and were most productive in the coastal zones. Associations of radiolarians and ammonoids show different evolutionary patterns in each region.