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Rocky Mountain capshell : ウィキペディア英語版 | Rocky Mountain capshell
The Rocky Mountain capshell (''Acroloxus coloradensis'') is a species of freshwater snail in the family Acroloxidae, the river limpets. It is the only member of the family found in North America.〔Anderson, T. (Rocky Mountain Capshell Snail (''Acroloxus coloradensis''): a technical conservation assessment. ) USDA Forest Service, Rocky Mountain Region. January 20, 2005.〕 == Description == This snail has a flat brown and white shell with the apex on the posterior left side. It has clear growth lines and radial striae. It can be up to 5 millimeters long, 2.9 wide, and 1.2 tall.〔
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「Rocky Mountain capshell」の詳細全文を読む
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