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Euchelus
''Euchelus'' is a genus of sea snails, marine gastropod mollusks in the family Chilodontidae (formerly in the family Trochidae, the top snails). ==Description== The umbilicate or imperforate shell has a globose-turbinate shape. It is umbilicate or imperforate. The whorls are rounded and with spirally granose revolving ribs. The aperture is subcircular. The outer lip is thickened, and crenulate within. The columella shows a central tooth or a notch at the base. The operculum has few whorls that are rapidly increasing.〔(Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia )〕
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「Euchelus」の詳細全文を読む
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