The Upper Bajocian-Lower Bathonian boundary section in the outskirts of Saratov: Molluscan characteristics and biostratigraphy

被引：0
作者：
V. V. Mitta
V. A. Zakharov
I. S. Barskov
V. B. Sel’tser
A. V. Ivanov
机构：
[1] Russian Academy of Sciences,Borissiak Paleontological Institute
[2] Russian Academy of Sciences,Geological Institute (GIN)
[3] Chernyshevskii Saratov State University,undefined
来源：
Stratigraphy and Geological Correlation | 2011年 / 19卷
关键词：
Saratov Volga region; ammonites; Bajocian; Bathonian; biostratigraphy; zones; Boreal-Tethyan correlation;
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摘要：
The analysis of all available data on the structure of the Bajocian-Bathonian boundary section in the outskirts of Saratov (Sokur quarry) and the taxonomic composition of its ammonites, belemnites, and bivalves revealed a continuous succession of the Pseudocosmoceras michalskii (Upper Bajocian), Oraniceras besnosovi, and Arcticoceras ishmae (Lower Bathonian) zones. In connection with the critique by Meledina et al. (2009), correlation of Bajocian and Bathonian boundary strata of the Central Russia and Northern Siberia is discussed. The inconsistency of Siberian bivalve and belemnite assemblages with Central Russian ammonite zones is explained by heterochronous invasions of different molluscan groups.
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页码：502 / 514
页数：12
相关论文
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