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Notopala
''Notopala'' is a genus of large, freshwater snails with an operculum, aquatic gastropod mollusks in the family Viviparidae, the river snails or mystery snails. == Description == The shell is dextral and globose-conic.〔 The shell has up to five whorls.〔 The aperture is subovate.〔 The operculum is corneous.〔
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「Notopala」の詳細全文を読む
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