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・ Odostomia martensi
・ Odostomia martinensis
・ Odostomia mauritiana
・ Odostomia mayii
・ Odostomia megerlei
・ Odostomia meijeri
・ Odostomia melitta
・ Odostomia mendozae
・ Odostomia mesomorpha
・ Odostomia meta
・ Odostomia metata
・ Odostomia metcalfei
・ Odostomia micra
・ Odostomia microeques
・ Odostomia micrometrica
Odostomia minutissima
・ Odostomia monodon
・ Odostomia moratora
・ Odostomia movilla
・ Odostomia muelleri
・ Odostomia murdochi
・ Odostomia nardoi
・ Odostomia natata
・ Odostomia navarettei
・ Odostomia nemo
・ Odostomia nicoyana
・ Odostomia nitens
・ Odostomia nodosa
・ Odostomia nofronii
・ Odostomia nota


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Odostomia minutissima : ウィキペディア英語版
Odostomia minutissima

''Odostomia minutissima'' is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.〔WoRMS (2011). ''Odostomia minutissima'' Dall & Bartsch, 1909. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=575875 on 2011-11-10〕〔Keen M. (1971). Sea shells of Tropical West America. Marine mollusks from Baja California to Perú. (2nd edit.). Stanford University Press pp. 1064:〕
This species is considered a synonym of ''Odostomia raymondi'' Dall & Bartsch, 1909 by James X. Corgan (1973).〔James X. Corgan (1973), The Veliger vol. 15, pp. 359-360〕 Dall & Bartsch based their distinction on the difference in length.〔
==Description==
The very small, bluish-white shell is very regularly narrowly conic. The shell grows to a length of 3.1 mm.The whorls of the protoconch are deeply obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The whorls of the teleoconch are slightly rounded, feebly contracted at the sutures, and very narrowly shouldered at the summit. The spiral thread at the periphery and the narrow tabulated summits, which fall a little anterior to this, render the suture narrowly channeled. The periphery of the body whorl is marked by a slender raised thread. The base is short, well rounded and impressed at the umbilical area. The entire surface of the spire and base is marked by slightly protractive lines of growth and many very fine, closely spaced spiral striations. The aperture is rhomboidal. The posterior angle is obtuse. The outer lip is thin. The columella is slender, curved, slightly revolute and provided with a strong fold at its insertion.〔( William Healy Dall and Paul Bartsch , "A Monograph of West American Pyramidellid Mollusks" , Smithsonian Institution, 1909 )〕

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