西班牙下奥维梯世(下寒武统第三期)三叶虫分带及其与西冈瓦纳的对比

IF 1.2 4区地球科学 Q2 GEOLOGY

Gff Pub Date : 2020-01-24 DOI:10.1080/11035897.2019.1701548

E. Liñán, J. Gámez Vintaned, T. Palacios, R. Gozalo

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引用次数: 3

摘要

摘要对西班牙中部普萨组上部(寒武系第三期基底)的新三叶虫进行了系统和生物地层学研究。三叶虫:托勒塔拟abadiella toletana n. gen. et sp.、维达拟abadiella vidalii n. gen. et sp.和一属一种indeindet。与其他来自下奥维梯地区阶段和古藻世第一区的化石记录在一起，到目前为止，这些化石只提供了尚未确定的三叶虫。原abadiella的形态介于Abadiellidae和Bigotinidae最古老的三叶虫属之间，证实了与古草藻组合共存的新三叶虫的古老推断。我们的发现为下奥维梯区域阶段(下寒武纪第3阶段)提出了一个新的三叶虫分区，并与全球记录的其他地层最底层三叶虫进行了对比。

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The lower Ovetian Stage (lower Cambrian Stage 3) trilobite zonation in Spain and correlation with West Gondwana

ABSTRACT New trilobites from the upper part of the Pusa Formation (base of Cambrian Stage 3) in Central Spain are studied for their systematic and biostratigraphic significance. The trilobites Proabadiella toletana n. gen. et sp., Proabadiella vidalii n. gen. et sp., and a genus et species indet. are recorded with other fossils from the lower Ovetian regional Stage and archaeocyathan Zone I, which had, until now, provided only undetermined trilobites. The Proabadiella morphology is intermediate between that of the oldest genera of trilobites belonging to the families Abadiellidae and Bigotinidae, confirming the old age inferred for the new trilobites co-occurring with the archaeocyathan assemblage. Our findings permit presenting a new trilobite zonation for the lower Ovetian regional Stage (lower Cambrian Stage 3). A correlation is proposed with the other stratigraphically lowermost trilobites recorded globally.

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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.