北海北部和中部至挪威大西洋边缘的早期Barremian–Hauterivian的两种新的bairdiid介形虫

IF 4.1 3区地球科学 Q1 PALEONTOLOGY

Journal of Micropalaeontology Pub Date : 2018-01-23 DOI:10.5194/JM-37-195-2018

M. Ayress, T. Gould

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引用次数: 0

摘要

摘要描述了北海北部和中部以及挪威附近大西洋边缘瓦尔霍尔组和阿斯加德组的下巴雷米安-豪特里夫阶介形虫的两个新种。这些新物种是Pontocyprella valhalla（lsid:zoobank.org/act:CA6B273F-CFF6-4C38-B9F4-18188225A7112018年1月18日）和Bairdia asgarda（lsid:zoobank.org:act:4ADDC817-A028-45FB-9287-ABF3794F2FCB，2018年1月19日）挪威瓦尔哈拉庞奇普里拉仅限于这一层段，由于其体积大、形状独特，是一种有用的地层标志物种，其最后一次出现是在巴雷阶早期。

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Two new bairdiid ostracod species from the early Barremian–Hauterivian of the northern and central North Sea to the Atlantic margin off Norway

Abstract. Two new species of bairdiid Ostracoda are described from the lower Barremian – Hauterivian interval of the Valhall and Asgard formations in the northern and central North Sea and Atlantic margin off Norway. The new species are Pontocyprella valhalla (lsid:zoobank.org:act:CA6B273F-CFF6-4C38-B9F4-18188225A711, 18 January 2018) and Bairdia asgarda (lsid:zoobank.org:act:4A4DC817-A028-45FB-9287-ABF3794F2FCB, 18 January 2018). These species dominate the ostracod assemblage that occurs abundantly in early Barremian–Hauterivian deep marine sediments of the northern and central North Sea and Haltenbanken area off Norway. Pontocyprella valhalla is restricted to this interval and because of its large size and distinct shape is a useful stratigraphic marker species, its last appearance being within the early Barremian.

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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.