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Odostomia canfieldi
''Odostomia canfieldi'' is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.〔Rosenberg, G. (2011). ''Odostomia canfieldi'' Dall, 1908. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581113 on 2011-10-26〕
==Description==
The large, white, shining shell is similar in form to ''Odostomia (Amaura) avellana''. It measures 9.6 mm and is one of the larger species within this genus. The three whorls of the protoconch are helicoid, quite elevated, deeply immersed in the first of the succeeding whorls, having their axis at a right angle to the axis of the later whorls. The six whorls of the teleoconch are well rounded, with a beveled shoulder at the summits. The sutures are simple and well marked. The periphery and the base of the body whorl are well rounded and inflated, the latter somewhat elongated. The aperture is subovate, somewhat effuse anteriorly. The posterior angle is acute. The outer lip is thin at the edge, thick within. The columella is curved and somewhat revolute, having a prominent oblique fold near its insertion. The parietal wall is covered by a thin callus. 〔 ( William Healy Dall and Paul Bartsch , "A Monograph of West American Pyramidellid Mollusks" , Smithsonian Institution, 1909 ) 〕
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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