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Segmentina nitida : ウィキペディア英語版 | Segmentina nitida
The shining ram's-horn snail, ''Segmentina nitida'', is a species of minute, air-breathing, freshwater snail, an aquatic gastropod mollusk or micromollusk in the family Planorbidae, the ramshorn snails. ==Description==
The shell of this species is sinistral in coiling and almost planispiral in shape. The spire is deeply sunken. The surface of the shell is glossy.〔Janus, Horst, 1965. ''The young specialist looks at land and freshwater molluscs''. Burke, London.〕 The maximum shell diameter is about 7 mm.〔
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「Segmentina nitida」の詳細全文を読む
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