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Viviparus
''Viviparus'', common name the river snails, is a genus of large, freshwater snails with an operculum, aquatic gastropod mollusks.〔Bouchet, P. (2014). Viviparus Montfort, 1810. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=154004 on 2014-11-13〕 They are primitive members of the clade Caenogastropoda. The old name of the genus used to be ''Paludina''. ==Distribution== This genus is palaearctic in distribution,〔Janus Horst. 1965. ''The young specialist looks at land and freshwater molluscs''. Burke, London.〕 and is known from the Jurassic to the Recent periods.〔(in Czech) Pek I., Vašíček Z., Roček Z., Hajn. V. & Mikuláš R.: ''Základy zoopaleontologie''. - Olomouc, 1996. 264 pp., ISBN 80-7067-599-3.〕
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「Viviparus」の詳細全文を読む
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