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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 Hurdia ： ウィキペディア英語版 Hurdia ''Hurdia victoria'' is an extinct species of anomalocaridid that lived 505 million years ago during the Cambrian Period. It is part of the ancestral lineage that led to Arthropods and is related to ''Anomalocaris''. ==Description== ''Hurdia'' was one of the largest organisms in the Cambrian oceans, reaching approximately 20 cm (0.66 feet) in length.〔 Its head bore a pair of spiny claws (great appendages) which shovelled food into its pineapple-ring-like mouth. A hollow, spike-shaped shell protruded from the front of its head. The function of this organ remains mysterious; it cannot have been protective as there was no underlying soft tissue. Lateral lobes ran along the sides of the organisms, from which large gills were suspended. 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「Hurdia」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.