Upper Oxfordian (Upper Jurassic) radiolarians from Rybaki Section, Moscow Region, Central Russia

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Palaeoworld Pub Date : 2024-04-01 DOI:10.1016/j.palwor.2023.03.001

Nikita Bragin, Liubov Bragina, Aleksandr Mironenko

引用次数: 0

Abstract

A well-preserved radiolarian assemblage was recovered from the Upper Jurassic section near the Rybaki village, Moscow Region, Central Russia. The radiolarians were found within the Amoeboceras serratum ammonite zone (upper Oxfordian), in phosphatized body chambers of ammonite shells. The radiolarian assemblage is represented by 23 species of 11 genera and displays Boreal affinity. It is characterized by abundance of Praeparvicingula: P. blackhorsensis (Pessagno and Whalen), P. donnae Bragin, P. elementaria (Carter), P. enormis (Yang) and by presence of the characteristic boreal family Echinocampidae (genera Echinocampe and Nordvikella). Five new species are described.

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俄罗斯中部莫斯科地区Rybaki剖面的上牛津阶（上侏罗纪）放射虫

在俄罗斯中部莫斯科地区雷巴基村附近的上侏罗纪地段发现了一批保存完好的放射虫。这些放射虫发现于 Amoeboceras serratum 菊石区（上牛津期），菊石壳的磷化体腔内。放射虫群由 11 个属的 23 个物种组成，具有北方亲缘关系。它的特点是有大量的 Praeparvicingula：P.blackhorsensis（Pessagno 和 Whalen）、P. donnae Bragin、P. elementaria（Carter）、P. enormis（Yang），以及具有北方特征的棘螈科（Echinocampe 和 Nordvikella 属）。描述了五个新物种。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Palaeoworld PALEONTOLOGY-

CiteScore

4.00

自引率

5.90%

发文量

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