The following sequence from the Kamennyj gully (Volgograd Region) has been shown to occur in the section, upwards from below: a sand member as the lower portion of the Late Bajocian alluvial Gnilushkinskaya suite; the upper (clayey) part of the overlying littoral Karaulinskaya suite, referred to the Upper Bajocian Pseudocosmoceras michalskii biozone; fragments of a complete section of the Lower Bathonian Zhirnovskaya suite (Gonolkites convergens zone), with the clays deposited under the normal shallow sea conditions; the upper part of the Middle Batho
