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Clionella
''Clionella'' is a genus of sea snails, marine gastropod mollusks in the family Clavatulidae. ==Description== The shell of the species in this genus is narrowly bucciniform and turriculated. The whorls are somewhat flattened, longitudinally ribbed, and have a thick epidermis. The spire of the shell is elevated. The siphonal canal is scarcely indicated at the broad base of the aperture. The lip has a small infrasutural anal sinus. The operculum has a lateral nucleus. The foot is short, broad, and rounded behind.The eyes are located near the tip of the tentacles. Radula formula (1-1-1), 〔 George Washington Tryon, Manual of Conchology vol. VI, p. 158; 1884 〕
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「Clionella」の詳細全文を読む
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