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Ranella
''Ranella'' is a genus of large warm-water and tropical sea snails, marine gastropod molluscs in the family Ranellidae, the tritons. ==Shell description== The shells of species within this genus are very large and solid, with a tall spire, a rounded aperture, a broadly flanged outer lip, and a moderately long siphonal canal, which is flexed and inclined to the left. The varices are prominent and rounded, but are hollowed out on the inside.
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「Ranella」の詳細全文を読む
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