Abstract

The environments of the Upper Vendian microscopic and macroscopic fossil organisms of the northwestern Russian Platform were reconstructed, and vertical distribution was analyzed. Five assemblages of the Kotlin age were determined: one impoverished transit assemblage and four abundant ones. A monographic restudy of the following filamentous algae was carried out: Aataenia reticularis Gnilovskaya emend. and Bicuspidata fusiformis Assejeva, emend. The latter was compared to cyanobacteria of the order Oscillatoriales. A new acritarch species Pterospermopsimorpha rigida sp. nov. was described.

中文翻译：

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俄罗斯西北平台（列宁格勒地区）上温迪统的科特林地区阶段的化石生物

摘要

重建了俄罗斯西北部平台上的文迪亚微观和宏观化石生物的环境，并分析了垂直分布。确定了五种科特林时代的组合：一种贫困的过境组合和四种丰富的过境组合。对以下丝状藻进行了专题研究：网状网状阿塔氏菌Gnilovskaya emend。和Bicuspidata fusiformis Assejeva一起来。将后者与颤藻蓝藻细菌进行比较。一个新的顶针物种Pterospermopsimorpha hardica sp。十一月 被描述。