…There are about 10 species of Woodwardia known in the world, 5 of which grow naturally in Japan. [Masahiro Kato] Fossils of this genus are called Woodwardia, and the main fossil species, W. endoana , W. decurrens , W. sasae , etc., are found in the coalfields of Hokkaido. The fern sandstone layer, which is widely distributed in the Ishikari coalfield, was named after the fact that it produces a large number of fossil ferns. … *Some of the terminology that mentions "Woodwardia" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…コモチシダ属Woodwardiaは世界に10種ほど知られ,そのうち5種が日本に自生する。【加藤 雅啓】 この属の化石はウッドワルディアといい,おもな化石種としてW.endoana,W.decurrens,W.sasaeなどが北海道の諸炭田から産する。石狩炭田に広く分布する羊歯砂岩層は,このシダ類化石を多産するところから名づけられた。… ※「ウッドワルディア」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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