Abstract

A monographic description of representatives of the genus Parrelloides from the Upper Cretaceous of West Siberia (Campanian and Maastrichtian) has been performed. The established species of this genus, including two new ones, P. aquilonius and P. variabilis, are described. The stratigraphic range of the genus has been extended. The generic assignments of P. sibiricus (Neckaja) and P. proprius (Podobina) are revised. The Maastrichtian species P. aquilonius sp. nov. and P. variabilis sp. nov. occurred in the northern part of the West Siberian basin, P. sibiricus (Neckaja) in the central and southern parts, and P. proprius (Podobina) in the southern part.

中文翻译：

---

西西伯利亚上白垩统 Parrelloides (Foraminifera) 属的代表

摘要

已经对西西伯利亚上白垩统（坎帕阶和马斯特里赫特阶）的Parrelloides属的代表进行了专题描述。描述了该属的已建立物种，包括两个新物种P. aquilonius和P. variabilis。该属的地层范围已扩大。P的通用赋值。sibiricus (Neckaja) 和P. proprius (Podobina) 进行了修订。马斯特里赫特种 P. aquilonius sp。十一月 和P. variabilis sp。十一月 发生在西西伯利亚盆地北部，P. sibiricus(Neckaja) 在中部和南部，P. proprius (Podobina) 在南部。