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Vasum
''Vasum'', common name the vase snails or vase shells, is a genus of mostly rather large predatory sea snails, marine gastropod mollusks within the family Turbinellidae. 〔 Bouchet, P. (2011). Vasum Röding, 1798. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=205505 on 15 April 2012〕 ==Shell description== Shells of species in this genus are usually somewhat large, and are usually very thick and heavy. They are often vase-shaped, in the sense that the shell of most of the species is more or less widely conical. The shells have a thick periostracum, a low spires, and 2, 3 or 4 plaits on the columella.
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「Vasum」の詳細全文を読む
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