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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 Acaste (genus) ： ウィキペディア英語版 Acaste (genus) Acaste is a genus of extinct trilobite of the order Phacopida which lived throughout the Silurian period. They are characterized by a convex dorsal surface, an absence of spines, a shortening of the head-shield and a general rounding off of all angles.〔H H Swinnerton - ''Outlines of Palaentology'', Edward Arnold (Publishers) Ltd, 1972 (p. 247) ISBN 0-7131-2357-5.〕 Species include ''Acaste downingiae'' 〔''British Palaeozoic Fossils'' - Natural History Museum 4th edition 1975. Plate 29. ISBN 0-565-05624-7.〕 (Wenlock Series). == Etymology == * ''A. lokii'' is named after Loki, the Norse god of mischief. Loki tricked the blind god Höðr to kill the god of beauty Baldr, and so started the demise of the world (or Ragnarök). This epithet was chosen by Edgecombe because it is based on the cephalon of ''A. longisulcata'', which has turned out to be a mixed collection. The pygidium of ''A. longisulcata'' belongs to a Phacopoidea.〔 * ''A. zerinae'' is named in honor of Zerina Edgecombe, the wife of the species author.〔 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「Acaste (genus)」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.