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Astralium rhodostomum : ウィキペディア英語版 | Astralium rhodostomum
''Astralium rhodostomum'', common name the rosemouth star shell, is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails. ==Description== The length of the shell varies between 16 mm and 55 mm. This thick-shelled species stands near to ''Lithopoma caelatum'' (Gmelin, 1791), but is distinguished by the following characters: the whorls are flat, not arched, in the middle. The superior nodules are situated near to the suture. They are hemi-spherical and solid. The body whorl has but a single row of nodules. The carina is sharper, the base flatter, with only three concentric nodose lirae. The aperture is lower and more rhomboidal . The color pattern is reddish brown, more or less verging on violet. 〔 (G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia ) (described as ''Astralium tuberosum'') 〕
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