Boreal-type brachiopod Yakovlevia from the Middle Permian of Japan

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概要

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• The following three species of the Boreal-type brachiopod genus Yakovlevia are described from the Middle Permian (Kungurian to Ufimian) of the Hida Gaien (=Hida Marginal) and South Kitakami Belts, Japan : Y. kaluzinensis Fredericks, Y. mammata (Keyserling) and Y. mammatiformis (Fredericks). The occurrence of Yakovlevia together with various Boreal-and Tethyan-type brachiopods in the Middle Permian of the two belts suggests that these regions were probably a continental shelf at the eastern margin of the Sino-Korean block in Middle Permian time.

• 日本古生物学会の論文
• 1999-06-30

著者

• Tazawa Junichi

  Department Of Geology Faculty Of Science Niigata University

関連論文

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• Two Permian lyttoniid brachiopods from Akasaka, central Japan
• Boreal-type brachiopod Yakovlevia from the Middle Permian of Japan
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