A natural assemblage of Ellisonia sp. cf. E. triassica Muller(Vertebrata: Conodonta) from the uppermost Permian in the Suzuka Mountains, central Japan

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概要

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• A natural assemblage of Ellisonia sp. cf. E. triassica Muller was recovered from the uppermost Permian close to the Permian-Triassic boundary in the Nabejiriyama section in the Mt. Ryozen area, Suzuka Mountains, central Japan. This natural assemblage and collections of similar ellisonids from the Taho Formation of Ehime Prefecture, southwestern Japan, demonstrate that the Ellisonia apparatus is composed of eight kinds of elements : breviform digyrate M, symmetrical S_0, extensiform digyrate S_1 and S_2, bipennate S_3 and S_4, and angulate P_1 and P_2 elements. The apparatus structure of Ellisonia is comparable to the standard 15-element plan of Carboniferous ozarkodinids and prioniodinids. The apparatus structure of the present natural assemblage is important in discussing the phylogenetic affinity of the genus Ellisonia.

• 日本古生物学会の論文
• 2004-12-31

著者

• Yamakita Satoshi

  Department of Earth Sciences, Faculty of Education and Culture, Miyazaki University

• Kadota Naoki

  Miyazaki Prefectural Museum Of Nature And History

• Yamakita S

  Department Of Earth Science Faculty Of Education And Culture Miyazaki University

• Yamakita Satoshi

  Department Of Earth Sciences Faculty Of Education And Culture Miyazaki University

• Yamakita Satoshi

  Department of Earth Science, Faculty of Education and Culture, Miyazaki University

関連論文

• Confirmation of the Permian/Triassic boundary in deep-sea sedimentary rocks : earliest Triassic conodonts from black carbonaceous claystone of the Ubara section in the Tamba Belt, Southwest Japan
• Late Triassic phaeodarian Radiolaria from the Northern Chichibu Belt, Shikoku, Japan
• Basaltic sheet intruding into Middle-Late Permian pelagic sedimentary rocks at Arrow Rocks, Waipapa Terrane, North Island, New Zealand
• A natural assemblage of Ellisonia sp. cf. E. triassica Muller(Vertebrata: Conodonta) from the uppermost Permian in the Suzuka Mountains, central Japan
• Reexamination of Upper Permian radiolarian biostratigraphy
• Geological relationship between Anyui Metamorphic Complex and Samarka terrane, Far East Russia

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