Morphological Diversity of Carboniferous Ammonoids of Central Asia and Kazakhstan

• Published in: Paleontological journal Vol. 56; no. 11; pp. 1322 - 1351
• Main Author: Nikolaeva, S. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-12-2022; Springer; Springer Nature B.V
• Subjects: Ammonoidea; Carboniferous; Crises; Dynamics; Earth and Environmental Science; Earth Sciences; Paleontology; Central Asia; morphotypes; morphological diversity dynamics; ammonoids; Carboniferous; Central Asia; Kazakhstan
• ISSN: 0031-0301; 1555-6174
• DOI: 10.1134/S0031030122110132

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.