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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Cambrian Stage 10 ： ウィキペディア英語版 Cambrian Stage 10 Stage 10 of the Cambrian is the still unnamed third and final stage of the Furongian Series. It follows the Jiangshanian and precedes the Ordovician Tremadocian Stage.〔 The proposed lower boundary is the first appearance of the trilobite ''Lotagnostus americanus'' around million years ago, but other fossils are also being discussed (see below). The upper boundary is defined as the appearance of the conodont ''Iapetognathus fluctivagus'' which marks the beginning of the Tremadocian and is radiometrically dated as million years ago.〔(【引用サイトリンク】url=https://engineering.purdue.edu/Stratigraphy/gssp/index.php?parentid=77 )〕 == Naming == The 10th stage of the Cambrian has not been formally named by the ICS yet, although a number of local names exist.〔(【引用サイトリンク】url=http://stratigraphy.org/column.php?id=Chart/Time%20Scale )〕 Several authors favor the name "Lawsonian" after Lawson Cove, in the Wah Wah Mountains of Utah. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cambrian Stage 10」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.