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・ Cirsonella carinata
・ Cirsonella consobrina
・ Cirsonella cubitale
・ Cirsonella densilirata
・ Cirsonella extrema
・ Cirsonella floridensis
・ Cirsonella gaudryi
・ Cirsonella georgiana
・ Cirsonella globosa
・ Cirsonella kerguelenensis
・ Cirsonella lata
・ Cirsonella laxa
・ Cirsonella maoria
・ Cirsonella margaritiformis
・ Cirsonella microscopia
Cirsonella naticoides
・ Cirsonella paradoxa
・ Cirsonella parvula
・ Cirsonella pisiformis
・ Cirsonella propelaxa
・ Cirsonella reflecta
・ Cirsonella romettensis
・ Cirsonella variecostata
・ Cirsonella waikukuensis
・ Cirsonella weldii
・ Cirsosia
・ Cirsosina
・ Cirsosiopsis
・ Cirsotrema
・ Cirsotrema zelebori


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Cirsonella naticoides : ウィキペディア英語版
Cirsonella naticoides

''Cirsonella naticoides'' is a species of very small sea snail, a marine gastropod mollusk or micromollusk in the family Skeneidae.〔Marshall, B. (2013). Cirsonella naticoides (Hedley, 1907). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=720341 on 2013-10-14〕
==Description==
(Original description by Charles Hedley) The height of the shell attains 2.35 mm, its diameter 3 mm. This is a small, solid, cream-colored shell with a turbinate shape. The four rounded whorls contain no sculpture. The surface is smooth and polished, in contrast with most species in this genus which are cancellate. The umbilicus is deep and narrow, its margin a faint basal funicle. The aperture is entire circular, double-edged, on its right lower margin the low arched butt-end of the basal funicle, then a broad thick callus tongue. This is probably marking the termination of a second inner funicle, and reaching half-way across the umbilicus. Lastly there is a similar but smaller callus pad laid upon the preceding whorl. The double basal funicle is remarkable. The inner funicle is swallowed by the umbilicus and its presence is only indicated by the callus on the aperture. The outer funicle is unusually faint.〔(Records of the Australian Museum v. 6 (1905-1907) ) (described as ''Crossea naticoides'')〕

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「Cirsonella naticoides」の詳細全文を読む



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