Tetori群Itsuki组和Kuwajima组的Palynofloras及其与东亚古植物区系的相关性

IF 1.3 4区地球科学 Q3 PALEONTOLOGY

Paleontological Research Pub Date : 2021-07-01 DOI:10.2517/2020PR017

J. Legrand, Toshihiro Yamada, K. Terada, H. Nishida

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引用次数: 1

摘要

摘要我们从Tetori群的中部采集了样本，并从Barremian Itsuki和Kuwajima地层中获得了不同的孢子（28种）和裸子植物花粉（8种）。本文首次报道了日本哲藤型植物区系省的Barremian孢粉植物群，并将其与琉森型植物区区系省同期的孢粉植物群进行了比较。这些孢粉植物群包括各种苏铁藻孢子和cheirolepidiacic花粉，这表明在日本巴雷米安时期，Tetori-（内区）和Ryoseki型（外区）省份之间的区系差异并不那么明显。它们还与朝鲜东南部庆尚盆地辛洞组和中国东北部石头河子组的植物群相似，表明一些龙崎型元素可能在巴雷米安向北扩展了分布。

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Palynofloras from the Itsuki and Kuwajima Formations of the Tetori Group and their Correlation with Paleofloristic Provinces of Eastern Asia

Abstract. We collected samples from the middle part of the Tetori Group and obtained diverse spores (28 species) and gymnosperm pollen (8 species) from the Barremian Itsuki and Kuwajima formations. This is the first report of Barremian palynofloras from the Tetori-type floristic province in Japan and we compared them to coeval ones from the Ryoseki-type floristic province. These palynofloras include various cyathealean spores and cheirolepidiaceous pollen, indicating that floristic differences between the Tetori- (Inner Zone) and Ryoseki-type (Outer Zone) provinces are not so distinct during the Barremian in Japan. They also show similarities with floras of the Sindong Group of the Gyeongsang Basin, southeast Korea and Shitouhezi Formation in northeast China, thus indicating that some Ryoseki-type elements may have extended their distribution northward in the Barremian.

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来源期刊

Paleontological Research PALEONTOLOGY-

CiteScore

1.60

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Paleonotological Research (PR) is a quarterly, peer-reviewed international journal, which focuses on original contributions primarily in the area of paleontology but also covering a wide range of allied sciences. It has been published since 1997 as a successor to the former journal Transactions and Proceedings of the Palaeontological Society of Japan. The emphasis of contributions will include global and local perspectives, and contents can cover all ages (Precambrian to the Quaternary, including the present time).