Early to Middle Devonian Ceratoikiscidae (Radiolaria) from the Yokokurayama Group in the Kurosegawa Terrane, Southwest Japan

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概要

• 論文の詳細を見る

• This paper focuses on ceratoikiscid radiolarians from the Devonian Nakahata Formation of the Yokokurayama Group in the Kurosegawa Terrane. The fauna is assigned to the Emsian to Eifelian (late Early to early Middle Devonian). There are 13 species of radiolarians, including 4 new species, which belong to the genera Ceratoikiscum, Glanta, Protoholoeciscus, Circulaforma and Helenifore. The morphology and stratigraphic distribution of the genera suggest that Protoholoeciscus evolved from Ceratoikiscum via Glanta with the process of acquisition of shell.

• 日本古生物学会の論文
• 1998-06-30

著者

• Umeda Masaki

  Department Of Earth Science And Astronomy College Of Arts And Sciences University Of Tokyo

• Umeda Masaki

  Department Of Geosciences Faculty Of Science Osaka City University

関連論文

• Upper Silurian-Middle Devonian radiolarian zones of the Yokokurayama and Konomori areas in the Kurosegawa Belt, Southwest Japan : Comment
• Early to Middle Devonian Ceratoikiscidae (Radiolaria) from the Yokokurayama Group in the Kurosegawa Terrane, Southwest Japan

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