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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 Chesapecten ： ウィキペディア英語版 Chesapecten ''Chesapecten'' is an extinct genus of fossilized scallops, marine bivalve mollusks in the family Pectinidae, the scallops. A number of species belonging to the genus ''Chesapecten'' lived during the time period from the early Miocene to the early Pleistocene.〔 ==Description== Like some other large scallops, the shells of ''Chesapecten'' are characterized by a pattern of wide ribs which radiate outward from the apex of the shell. A distinctive feature of ''Chesapecten'' is that the radial ribs on its shell are crossed by much smaller, rough, concentric ribs, which follow the contours of the edges of the shell (are "conmarginal"). The left valve of ''Chesapecten'' is more convex than the right valve. The adductor muscle scar is large and rounded. 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「Chesapecten」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.