格陵兰北部（劳伦蒂亚）中寒武纪（苗岭阶）的Eldoradia和Acrochalops（三叶虫：Bolaspididae）

IF 1.2 4区地球科学 Q2 GEOLOGY

Gff Pub Date : 2021-01-02 DOI:10.1080/11035897.2020.1865446

J. S. Peel

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引用次数: 1

摘要

摘要描述了格陵兰北部（劳伦蒂亚）寒武纪中期（苗岭系）的ptychoparioid三叶虫Eldoradia和Acrochalops（Bolaspididae科）。Eldoradia最初被描述为来自内华达州的秘密峡谷页岩，记录于格陵兰岛北部的西南伍尔夫地，在那里它与Modocia和Olenoides一起出现。建立了Eldoradia caerulioris n.sp。青崖组下部Eldoradia的产状表明，该组底部的寒武纪晚期至中寒武纪（庙岭阶、古张阶）最小。根据格陵兰岛西北部英格菲尔德地庙岭阶（五源阶）的原始资料，重新描述了埃尔多罗迪亚的亲缘生物Acrochalops的模式资料。

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Eldoradia and Acrocephalops (Trilobita: Bolaspididae) from the middle Cambrian (Miaolingian) of northern Greenland (Laurentia)

ABSTRACT The ptychoparioid trilobites Eldoradia and Acrocephalops (Family Bolaspididae) are described from the middle Cambrian (Miaolingian Series) of northern Greenland (Laurentia). Eldoradia, originally described from the Secret Canyon Shale of Nevada, is recorded from south-western Wulff Land, North Greenland, where it occurs together with Modocia and Olenoides. Eldoradia caerulioris n. sp. is established. The occurrence of Eldoradia in the lower part of the Blue Cliffs Formation indicates a minimum late middle Cambrian age (Miaolingian Series, Guzhangian Stage) for the base of the formation. Type material of Acrocephalops, a relative of Eldoradia originally proposed on the basis of material from the Miaolingian Series (Wuliuan Stage) of Inglefield Land, North-West Greenland, is redescribed.

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来源期刊

Gff 地学-地质学

CiteScore

2.80

自引率

10.00%

发文量

审稿时长

>12 weeks

期刊介绍： GFF is the journal of the Geological Society of Sweden. It is an international scientific journal that publishes papers in English covering the whole field of geology and palaeontology, i.e. petrology, mineralogy, stratigraphy, systematic palaeontology, palaeogeography, historical geology and Quaternary geology. Systematic descriptions of fossils, minerals and rocks are an important part of GFF''s publishing record. Papers on regional or local geology should deal with Balto-Scandian or Northern European geology, or with geologically related areas. Papers on geophysics, geochemistry, biogeochemistry, climatology and hydrology should have a geological context. Descriptions of new methods (analytical, instrumental or numerical), should be relevant to the broad scope of the journal. Review articles are welcome, and may be solicited occasionally. Thematic issues are also possible.