二畳石炭紀の日本産三葉虫群に基づく古生代後期の東亜細亜古地理論

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タイトル別名
  • The Permo-Carboniferous palaeogeography of Eastern Asia discussed with reference to trilobite faunas.
  • 2ジョウ セキタンキ ノ ニホンサン サンヨウチュウグン ニ モトズク コセイ

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In Japan 14 species in 21 genera of Carboniferous trilobites were known in 1980 and 22 species in 11 genera of the Permian ones in 1984. Adding a few species described since then, the Permo-Carboniferous trilobites of Japan total about 70 species at present. They are described from 18 horizons, namely 11 and 7 horizons respectively for the Carboniferous and Permian ones. They are compared with the faunas of the Mongolian geosyncline, Hwangho and Yangtze basins and Southeast Asia. While the Mongolian sea retreated from the west side through the periods, the route of migration was maintained toward the Mediterranean sea through the Himalayan geosyncline until the end of the Palaeozoic era. Some trilobites of Japan reveal relationship further toward the Australian and North American sides.

収録刊行物

  • 地学雑誌

    地学雑誌 98 (1), 34-48, 1989

    公益社団法人 東京地学協会

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