…In Japan, it is found in abundance in the Paleogene coal-bearing layers, especially the Eocene, in various places from Hokkaido to Kyushu. The representative species in Japan is Sabalites nipponicus , which is found in the Paleogene formations of the Bibai Formation of the Ishikari Coalfield in Hokkaido and the Takashima Group of the Takashima Coalfield in Kyushu. It is thought to have formed by the shortening of the central axis from pinnate compound leaves, and there are various stages depending on the degree of shortening. … *Some of the terminology that mentions "Sabalites nipponicus" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…日本では北海道から九州まで各地の古第三紀含炭層,とくに始新統から多産する。日本の代表種はサバリテス・ニッポニクスSabalites nipponicusで,北海道の石狩炭田美唄層,九州の高島炭田高島層群などの古第三系から産する。羽状複葉から中軸が短縮することによって形成されたものと思われ,短縮の程度により種々の段階がある。… ※「Sabalites nipponicus」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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