…In Japan, they are known from various geological ages since the Triassic, but are particularly abundant in the Jurassic Torinosu Limestone. Representative genera include Thecosmilia , Thamnasteria , and Stylina . The Quaternary Ryukyu Limestone distributed in the Ryukyu Islands contains coral reef deposits and is rich in fossil hexacorals, but most of them are composed of the same species and genera as modern corals. … *Some of the terminology that mentions "Thamnasteria" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…日本では三畳紀以降の各地質時代に知られているが,とくにジュラ紀鳥巣石灰岩に多産する。代表的な属としてはテコスミリアThecosmilia,タムナステリアThamnasteriaおよびスティリナStylinaなどがある。また琉球諸島に分布する第四紀の琉球石灰岩にはサンゴ礁堆積物を含み,化石六放サンゴを豊産するが,ほとんど現生サンゴと同じ種属から構成されている。… ※「Thamnasteria」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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