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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 Emmonsaspis ： ウィキペディア英語版 Emmonsaspis ''Emmonsaspis'' is a fossil that was found in the Cambrian-age Parker Slate of Vermont in the late 19th century. == Description == ''Emmonsaspis'' is described as a tadpole or worm-like animal. No trace of a spinal cord is present. There are two species: ''Emmonaspis worthanella'' and ''Emmonaspis cambriensis'' (Walcott(?) 1886(?) 1911(?)). ''E. cambrensis'' has been described as a graptolite, a chordate, an arthropod and as a frond-like organism.〔(Problematic Cambrian Fossil, Possibly a Primitive Chordate Fossil )〕〔(The quest for chordate origins )〕 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「Emmonsaspis」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.