Bashkirian Stage

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Bashkirian Stage

 

the lower stage of the middle section of the Carboniferous system (period). It was differentiated by S. V. Semikhatova in 1934 on the territory of the Bashkir ASSR. In a typical cross section, it is composed of limestone with a characteristic complex of foraminifers (Pseudostaffella antiqua Dut. and others) and brachiopods (Choristites bisulcatiformis Semid. and others). In the USSR the Bashkirian Stage is widespread in the Urals, Timan, the Volga Region, the Don basin, and Middle Asia. In Western Europe the upper parts of the Namurian and the lower parts of the Westphalian series, in the local stratigraphic system, correspond to the Bashkirian Stage.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
2D-F) Westphalomerope Mecopteroidea Early Pennsylvanian, maryvonneae Nel, Bashkirian Stage Roques, Nel, Prokop ("Veine Maroc, and Steyer 2007 Vicoigne Series") (Fig.