Morphological Diversity of Carboniferous Ammonoids of Central Asia and Kazakhstan

The dynamics of morphological diversity of shells of Carboniferous ammonoids in Central Asia and Kazakhstan was studied based on changes over time of shell morphotypes. It is shown that the overall morphological diversity in the Carboniferous in Central Asia and Kazakhstan corresponded to its general trends world-wide, including in the pre-crisis and post-crisis eras. Major crisis events affected the entire morphological diversity (and hence all adaptive types). The changes in the morphological diversity dynamics in the Carboniferous ammonoids of Central Asia and Kazakhstan are most similar to those of the Urals, and considerably different from those known from Western Europe.