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Odostomia valdezi : ウィキペディア英語版 | Odostomia valdezi
''Odostomia valdezi'' is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.〔Rosenberg, G. (2011). ''Odostomia valdezi'' Dall & Bartsch, 1907. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581267 on 2012-01-12〕〔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.〕 This species is considered by R. Tucker Abbott (1974) as a synonym of ''Odostomia tenuisculpta'' Carpenter, 1864 〔 Abbott, R. Tucker. 1974. American Seashells. New York, N.Y.: Van Norstrand Reinhold Company. 〕 ==Description== The small, thin shell has a very elongate-oval shape. It is subdiaphanous to milk-white. Its length measures 3 mm. Its entire surface is marked by rather strong lines of growth and numerous microscopic spiral striations. 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 turn is visible. The five whorls of the teleoconch lie rather high between the sutures. They are well rounded, with narrowly roundly shouldered summits. The periphery and the base of the body whorl are inflated and well rounded, the latter with a very narrow umbilical chink. The oval aperture is moderately large. The posterior angle is acute. The columella is strongly curved, reinforced by the attenuated base and provided with a moderately strong fold opposite the umbilical chink. 〔 (Dall & Bartsch, A Monograph of West American Pyramidellid Mollusks, United States National Museum Bulletin 68, p. 198; 1909 ) 〕
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