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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 Arctinurus ： ウィキペディア英語版 Arctinurus ''Arctinurus boltoni'' is a large (up to 30 cm) lichid trilobite of the mid-Silurian. This trilobite reached about eight inches in length, though the normal adult carapace was about four inches. It lived in moderately deep-water in semi-tropical regions. ''Arctinurus'' fossils have been found in Europe and North America. ''Arctinurus'' was first reported during the construction of the Erie Canal through soft Silurian shales and mudstones in upstate New York. Before the late 1990s, complete ''Arctinurus'' fossils were very rare. The vast majority of complete specimens were commercially mined near Middleport New York, USA, in a shallow quarry in the Rochester Formation, and the trilobite is now relatively common in museum, university and private collections. ''Arctinurus'' tended to have epibionts attached to the carapace. ==References== * Brett, Carleton, ''et al.'' 2003. ''Trilobites of New York''. Rochester: University of Rochester Press. * Ludvigsen, Rolf 1982. ''Fossils of Ontario Part I: The Trilobites''. Toronto: Royal Ontario Museum. 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「Arctinurus」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.