Radiolaria from the lower Cenomanian (Upper Cretaceous) of Crimea. Part 2. Nassellaria

IF 0.7 Q4 PALEONTOLOGY REVUE DE MICROPALEONTOLOGIE Pub Date : 2021-07-01 DOI:10.1016/j.revmic.2021.100482

Liubov Bragina, Nikita Bragin

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引用次数: 2

Abstract

Well-preserved Late Cretaceous (early Cenomanian) radiolarians were recovered from two sections in Crimea: Bodrak River and Sel’-Bukhra Mountain. Abundant and diverse Nassellaria were studied and four new species are described: Holocryptocanium pseudoastiense nov. sp., Diacanthocapsa bodrakiense nov. sp., Novixitus riedeli nov. sp. and Rhopalosyringium panovi nov. sp. Herein Archaeodictyomitra (?) speciosa Bragina is newly attributed to the genus Obeliscoites O’Dogherty and Dorypyle ovoidea (Squinabol) is tentatively attributed to the genus Homeoarchicorys Empson-Morin. The stratigraphic ranges of Diacanthocapsa urkutica Bragina, Distylocapsa squama O’Dogherty, Novixitus subtilis Bragina, and Siphocampe altamontensis (Campbell and Clark) are more precisely defined with their lower limits expanded to the lower Cenomanian and the upper limits of Pseudodictyomitra languida O’Dogherty and Thanarla conica (Squinabol) extended to the lower Cenomanian.

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克里米亚的下盖诺曼尼亚(上白垩纪)的放射虫。第2部分。罩笼虫亚纲

保存完好的晚白垩世(早Cenomanian)放射虫在克里米亚的两个部分:Bodrak河和Sel -Bukhra山被发现。研究了种类丰富多样的鼻虫属，发现了4个新种:Holocryptocanium pseudoastiense十一月sp.、Diacanthocapsa bodrakense十一月sp.、Novixitus riedeli十一月sp.和Rhopalosyringium panovi十一月sp.其中Archaeodictyomitra (?) speciosa Bragina(?)新归属于Obeliscoites O 'Dogherty属，Dorypyle ovoidea (Squinabol)暂归属于homoarchicorys Empson-Morin属。Diacanthocapsa urkutica Bragina、Distylocapsa squama O 'Dogherty、Novixitus subtilis Bragina和Siphocampe altamontensis (Campbell和Clark)的地层范围更为精确，其下限扩展到下Cenomanian, Pseudodictyomitra languida O 'Dogherty和Thanarla conica (Squinabol)的上限扩展到下Cenomanian。

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来源期刊

REVUE DE MICROPALEONTOLOGIE PALEONTOLOGY-

CiteScore

2.50

自引率

0.00%

发文量

期刊介绍： La Revue de micropaléontologie publie 4 fois par an des articles de intérêt international, consacrés à tous les aspects de la micropaléontologie. Les textes, en anglais ou en français, sont des articles originaux, des résultats de recherche, des synthèses et mises au point, des comptes rendus de réunions scientifiques et des analyses de ouvrages. La revue se veut résolument ouverte à tous les aspects de la micropaléontologie en accueillant des travaux traitant de la systématique des microfossiles (et de leurs équivalents actuels), des bactéries aux microrestes de vertébrés, et de toutes leurs applications en sciences biologiques et géologiques.