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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 Groenlandaspis ： ウィキペディア英語版 Groenlandaspis ''Groenlandaspis'' ("Greenland Shield") is an extinct genus of arthrodire from the Late Devonian. Fossils of the different species are found late Devonian strata in all continents except eastern Asia. The generic name commemorates the fact that the first specimens of the type species were found in Greenland. As with all other arthrodires, ''Groenlandaspis'' had a joint in the back of its head with its thoracic armor, allowing for its head to be thrown back, increasing its gape. However, as its head is somewhat compressed in comparison with many other arthrodires, and as the dorsal side came to a low, pyramid-like peak, it is believed that ''Groenlandaspis'' could not throw its head back very far. It was a relatively small fish, only in length, and lived on the ocean floor, where it is thought to have fed on either very small prey, or detritus; the small dental plates in its mouth strongly suggest that it was incapable of tackling large prey. ==References== 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「Groenlandaspis」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.