...After the land bridge theory and the continental drift theory, the division and movement of Gondwana is now explained by plate tectonics. The Gondwana continent is characterized by the Glossopteris flora (or Gondwana flora), which is made up of 90% of the total Glossopteris species with ligulate leaves and reticulate veins. This is fundamentally different from the flora of the Northern Hemisphere, which is made up of a wide variety of plants, suggesting that it appeared under a harsh environment. Other plants that occur in the Gondwana continent include the macrophyllous Palaeovitcharia and Gondwanidium , the arthropod Schizoneura , the cuneiform Trizygia ( Sphenophyllum ), and the conifer Noeggerathiopsis . *Some of the terminology that mentions "Gondwana flora" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…陸橋説,大陸移動説などを経て,現在ではプレートテクトニクスによってゴンドワナ大陸の分裂と移動が説明されるようになった。 ゴンドワナ大陸を特徴づけるのは舌状単葉で網状脈をもったグロッソプテリス類が全体の9割も占めるグロッソプテリス植物群(またはゴンドワナ植物群Gondwana flora)で,北半球の多種多様な植物で構成されている植物群とは根本的に異なり,きびしい環境の下に出現したことを暗示している。共に産するものとして大葉類のPalaeovittaria,Gondwanidium,有節類のSchizoneura,楔葉類のTrizygia(Sphenophyllum),針葉樹類のNoeggerathiopsisなどがある。… ※「Gondwana flora」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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