上Pliensbachian-Toarcian Ammonitico Rosso剖面中的有孔虫动物群变化(匈牙利Bakonycsernye)

IF 0.9 4区 地球科学 Q4 PALEONTOLOGY
Á. Görög, Gábor Zsiborás
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引用次数: 3

摘要

从新特提斯的上pliensbachia - toarcian区间,这是第一次从菊石Rosso石灰岩序列中获得孤立的有孔虫组合记录。用菊石测定了Bakonycsernye(匈牙利)的年代。冰醋酸提取的有孔虫区系共得到86个底栖有孔虫类群。大多数标本属于螺旋藻亚目和Lagenina亚目,其次是ammodiscia。隶属于astrohizina亚目、Komokioidea亚目、Verneuilinina亚目、Robertinina亚目和Rotaliina亚目;毫液滴没有出现。副舌藻(paringulina csernyensis n. sp.)是由上pliensbach目发现的。大多数种具有较宽的地层范围,但已有7种的分布根据其在这些剖面中的出现而发生了变化。然而,有孔虫物种的地层分布使其能够精确地定年至阶段水平。本文在比较新特提斯虫与其他同时期有孔虫动物群的分类组成的基础上,讨论了有孔虫生物带和生物事件。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Foraminiferal Faunal Changes in the Upper Pliensbachian–Toarcian Ammonitico Rosso Sections (Bakonycsernye, Hungary)
From the upper Pliensbachian–Toarcian interval of the Neotethys, this is the first record of isolated foraminiferal assemblages obtained from the Ammonitico Rosso limestone successions. The studied sections of Bakonycsernye (Hungary) had been dated by ammonites. The foraminiferal fauna extracted by glacial acetic acid yielded 86 benthic foraminiferal taxa. Most specimens belonged to the suborders Spirillinina and Lagenina followed by the Ammodiscina. The representatives of suborders Astrorhizina, Komokioidea, Verneuilinina, Robertinina, and Rotaliina were subordinated; miliolids were absent. Paralingulina csernyensis n. sp. was described from the upper Pliensbachian. The majority of species have wide stratigraphic ranges, however the previously known distributions of seven species changed based on their appearances in these sections. Nevertheless, the stratigraphic distributions of the foraminiferal species enabled accurate dating to stage-level. Based on the comparison of the taxonomic composition with other coeval foraminiferal faunas of the Neotethys, foraminiferal biozones and bioevents are discussed in this paper.
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来源期刊
Journal of Foraminiferal Research
Journal of Foraminiferal Research 地学-古生物学
CiteScore
2.10
自引率
9.10%
发文量
32
审稿时长
>12 weeks
期刊介绍: JFR publishes original papers of international interest dealing with the Foraminifera and allied groups of organisms. Review articles are encouraged.
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