…They may also form geographically distinct faunas. Their numbers declined from the Silurian to the Devonian, but the Phacops genus flourished during this period. In the Carboniferous and Permian periods, only the Phillipsiidae family remained as major species, becoming extinct at the end of the Permian period. *Some of the terminology explanations that mention "Phacops" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…また,地理的に特徴のある動物群をなすこともある。シルル紀からデボン紀にかけて減少はするが,ファコプス類Phacopsはこのころ全盛となる。石炭紀,二畳紀にはフィリップシア科Phillipsiidaeのもののみが主要種として残るだけになり,二畳紀末をもって絶滅する。… ※「Phacops」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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