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・ Calliostoma orion
・ Calliostoma ornatum
・ Calliostoma osbornei
・ Calliostoma otukai
・ Calliostoma palmeri
・ Calliostoma paradigmatum
・ Calliostoma paucicostatum
・ Calliostoma pellucidum
・ Calliostoma penniketi
・ Calliostoma peregrinum
・ Calliostoma perfragile
・ Calliostoma periglyptum
・ Calliostoma pertinax
・ Calliostoma philippei
・ Calliostoma picturatum
Calliostoma platinum
・ Calliostoma poppei
・ Calliostoma poupineli
・ Calliostoma problematicum
・ Calliostoma psyche
・ Calliostoma pulchrum
・ Calliostoma punctulatum
・ Calliostoma purpureum
・ Calliostoma quadricolor
・ Calliostoma regale
・ Calliostoma rema
・ Calliostoma richeri
・ Calliostoma roseolum
・ Calliostoma rosewateri
・ Calliostoma rota


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Calliostoma platinum : ウィキペディア英語版
Calliostoma platinum

''Calliostoma platinum'' is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.〔Rosenberg, G. (2012). ''Calliostoma platinum'' Dall, 1890. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=580413 on 2012-12-07〕
==Description==
The size of the shell varies between 25 mm and 34 mm. The imperforate, very thin, nearly smooth shell has a conical shape. It is soiled white with a delicate tint of sea-green on the last whorl. The surface is slightly shining. The spire is conical, its outlines a trifle concave;. It contains 8 whorls. The dextral apex is subimmersed. The first two whorls are quite convex, the following whorls slightly convex. The sutures are linear. The body whorl has a delicate carina at the otherwise blunt periphery. Aabove this, parallel with it, there is a narrow raised cord which does not extend above the lower whorl, and will probably be found to be quite inconstant. The whole upper surface of the whorls is traversed by numerous scarcely perceptible spirals. The base of the shell is slightly convex, and has close, unequal spiral striae, coarser near the axis and circumference. The rather large aperture is subquadrate, beautifully iridescent within. The thin outer lip is fragile. The vertical, pearly columella is cylindrical and not toothed at its base.〔(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)
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