Title:
Morphologicheskaya i ekologicheskaya Evolyutsiya Ammonoidei Uralskogo Paleobasseina na rubezhe
Vise i Serpukhova.

In Russian, with short abstract: Morphological and ecological evolution of the Uralian Ammonoids at the
Visean/Serpukhovian boundary:

The analysis of the morphological and ecological structure of the Late Visen and Serpukhovian ammonoid assemblages shows successive stages in the evolution of the community: the beinning of the evolution of diversityradiation, and the stable community. The most important evolutionary event was the appearance of the superfamily Neoglyphioceratacea, with which the wide distribution of the planktonic forms is connected.