沙特阿拉伯中部中侏罗统(bajoian) Dhruma组浅水Ammobaculoides组合的产状

IF 4.1 3区地球科学 Q1 PALEONTOLOGY

Journal of Micropalaeontology Pub Date : 2018-01-11 DOI:10.5194/JM-37-149-2018

M. Kaminski, M. H. Malik, E. Setoyama

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引用次数: 4

摘要

摘要我们报道了在沙特阿拉伯利雅得西部暴露的中侏罗统Dhruma组最下一段中出现了以ammobaculoides为主的组合。杜马氨杆菌属新种。从Dhruma组D1单元(也称为Balum段)的绿色页岩中描述，根据菊石，该单元被指定为早巴约西亚时代。我们的新发现构成了世界上最古老的有孔虫属Ammobaculoides的报道，Plummer, 1932。

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The occurrence of a shallow-water Ammobaculoides assemblage in the Middle Jurassic (Bajocian) Dhruma Formation of Central Saudi Arabia

Abstract. We report the occurrence of an Ammobaculoides-dominated assemblage in the lowermost member of the Middle Jurassic Dhruma Formation exposed west of Riyadh, Saudi Arabia. The new species Ammobaculoides dhrumaensis n.sp. is described from the green shale of the D1 unit (also known as the Balum Member) of the Dhruma Formation, which has been assigned an early Bajocian age based on ammonites. Our new finding constitutes the oldest reported worldwide occurrence of the agglutinated foraminiferal genus Ammobaculoides Plummer, 1932.

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来源期刊

Journal of Micropalaeontology 生物-古生物学

CiteScore

4.30

自引率

5.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Micropalaeontology (JM) is an established international journal covering all aspects of microfossils and their application to both applied studies and basic research. In particular we welcome submissions relating to microfossils and their application to palaeoceanography, palaeoclimatology, palaeobiology, evolution, taxonomy, environmental change and molecular phylogeny.