… The Cambrian is divided into three periods, the early, middle, and late, mainly based on the characteristics of the trilobite group. The early period is called the Ollenellian, the middle period the Paradoxidian, and the late period the Olenidian. Europe was the most typical region. In Asia, including China, the early period is characterized by Redlichia , and the middle period by Blackwelderia . … *Some of the terminology explanations that mention "Orenidian" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
… カンブリア紀は,主として三葉虫群の特徴により前,中,後の3期に分けられる。前期をオレネリアンOllenellian,中期をパラドキシディアンParadoxidian,後期をオレニディアンOlenidianと呼び,ヨーロッパで典型的に発達している。中国などアジアではレドリキアRedlichiaが前期を,ブラックウェルデリアBlackwelderiaが中期を,それぞれ特徴づける。… ※「オレニディアン」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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