IN DEFENSE OF THE VOLGIAN STAGE

Abstract

The Volgian Stage was a subdivision used in Russian and world geological literature for over a century. The stage was withdrawn from the general scale and replaced by the Tithonian Stage, when the Interdepartmental Stratigraphic Committee of the Russian Federation (ISC RF) came to that decision on February 2, 1996. The paper casts doubts on the decision. A return to the use of parallel stages in the International stratigraphic scale for the time intervals with high geographic differentiation of biota is substantiated.