伊朗中部下白垩世一种新的大型底栖有孔虫目Pseudochoffatella minima n.sp

IF 1.3 4区地球科学 Q3 PALEONTOLOGY

Micropaleontology Pub Date : 2020-01-01 DOI:10.47894/mpal.66.2.08

F. Schlagintweit, K. Rashidi, Reza Hanifzadeh

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引用次数: 3

摘要

新发现的大底栖有孔虫Pseudochoffatella minima n. sp.来自巴雷米亚最上层?伊朗中部西azd地块塔夫脱组早上天纪。它与上aptian -下mostalbian模式种P. cuvillieri Deloffre在尺寸(试验尺寸、室高、前叶直径)上有所不同，可以认为是其直系祖先。小孢子虫通常在单型组合中出现在尾岩中。与Tirgan和Taft组下Aptian记录的同类分类群Balkhania balkhanica Mamontova(同:Pseudochoffatella giganteaKaever)的差异受到限制。除模式种P. cuvillieri Deloffre和Cenomanian P. algeriana PeybernÃ¨s、Calvez和Ciszak外，P. minima n. sp.是该属的第三种。

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Pseudochoffatella minima n. sp., a new Larger Benthic Foraminifera from the Lower Cretaceous of Central Iran

The new Larger Benthic Foraminifera Pseudochoffatella minima n. sp. is described from the uppermost Barremian? to early upperAptian of the Taft Formation of theYazd Block, Central Iran. It differs from the upperAptian-lowermostAlbian type-species P. cuvillieri Deloffre by its reduced dimensions (test size, chamber height, diameter of proloculus), and can be considered as its direct ancestor. P. minima n. sp. occurs in wackestone in often monotypic assemblages. Differences to Balkhania balkhanica Mamontova (syn. Pseudochoffatella giganteaKaever), an allied taxon recorded from the lower Aptian of the Tirgan and Taft formations are constrained. P. minima n. sp. represents the third species of the genus besides the type-species P. cuvillieri Deloffre and the Cenomanian P. algeriana PeybernÃ¨s, Calvez and Ciszak.

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来源期刊

Micropaleontology 地学-古生物学

CiteScore

3.20

自引率

6.70%

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. Owned by The Micropalaeontological Society, the scope of the journal is broad, demonstrating the application of microfossils to solving broad geoscience issues.