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・ Odostomia paulhenrii
・ Odostomia paupercula
・ Odostomia pedica
・ Odostomia pedroana
・ Odostomia pesa
・ Odostomia phanella
・ Odostomia pharcida
・ Odostomia photis
・ Odostomia pilsbryi
・ Odostomia pleioregona
・ Odostomia plicata
・ Odostomia pocahontasae
・ Odostomia polita
・ Odostomia poppei
・ Odostomia porteri
Odostomia pratoma
・ Odostomia prinsi
・ Odostomia profundicola
・ Odostomia promeces
・ Odostomia prona
・ Odostomia proxima
・ Odostomia pudica
・ Odostomia puelchana
・ Odostomia pulcherrima
・ Odostomia pulchra
・ Odostomia pulcia
・ Odostomia pupaeformis
・ Odostomia pyxidata
・ Odostomia quadrae
・ Odostomia quilla


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

''Odostomia pratoma'' is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.〔Rosenberg, G. (2011). ''Odostomia pratoma'' Dall & Bartsch, 1909. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581241 on 2011-11-10〕 〔Turgeon, D.; Quinn, J.F.; Bogan, A.E.; Coan, E.V.; Hochberg, F.G.; Lyons, W.G.; Mikkelsen, P.M.; Neves, R.J.; Roper, C.F.E.; Rosenberg, G.; Roth, B.; Scheltema, A.; Thompson, F.G.; Vecchione, M.; Williams, J.D. (1998). Common and scientific names of aquatic invertebrates from the United States and Canada: mollusks. 2nd ed. American Fisheries Society Special Publication, 26. American Fisheries Society: Bethesda, MD (USA). ISBN 1-888569-01-8. IX, 526 + cd-rom pp.〕
==Description==
The bluish-white shell has an elongate-ovate shape. Its length measures 2.9 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 five whorls of the teleoconch are well rounded, strongly contracted at the sutures, with a rounded sloping shoulder at the summit. The periphery is obsoletely angulated. The base well of the shell is rounded with an obscure umbilical chink. The entire surface of the base and the spire are marked by numerous, slightly retractive lines of growth and exceedingly fine, closely spaced, spiral striations. The aperture is ovate. The posterior angle is obtuse. The outer lip is very thin. The columella is slender, strongly curved, slightly revolute. It is provided with a weak, deep-seated fold at its insertion.〔 (Dall & Bartsch, A Monograph of West American Pyramidellid Mollusks, United States National Museum Bulletin 68, p. 199-200; 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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