местонахождение

The Upper Permian ichthyofauna from Vyazniki, Vladimir Region, has been analyzed. The rocks hosting fossil fish bones have been determined to belong to the terminal Permian ichthyofauna subzone Toyemia blumentalis-Gnathorhiza otschevi-Mutovinia sennikovi. An assumption is advanced that upwards in the section replacement of the fish complexes takes place, with some of the representatives pervading into the Triassic. Description of the actinopterygian Mutovinia sennikovi A.

Material on ichthyofauna from the Middle and Upper Permian of Eastern Europe was revised. New fish taxa from the Permian key sections of the basin of the Volga and the Ural Rivers significantly expanded composition of the complexes. the stratigraphic and geographical distribution of fish has been traced. A more precise zonal scale of the Middle and Upper Permian of the Eastern Europe based on ichthyofauna has been proposed. 

A detailed study of the section of the severodvinsky and vyatsky stages of the Upper Permian with layer-by-layer sampling of ichthyofauna in the western part of the Orenburg region (basin of the lower reaches of the Samara River) was carried out. Based on the fish complexes, a paleontological justification of the stratigraphic boundary between the severodvinsky and vyatsky stages was obtained in the region for the first time.