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・ Odostomia ryalea
・ Odostomia salinasensis
・ Odostomia sanctorum
・ Odostomia sanjuanensis
・ Odostomia santamariensis
・ Odostomia sapia
・ Odostomia satura
・ Odostomia scalariformis
・ Odostomia scalaris
・ Odostomia scammonensis
・ Odostomia schrami
・ Odostomia septentrionalis
・ Odostomia serilla
・ Odostomia sicula
・ Odostomia silesui
Odostomia sillana
・ Odostomia sitkaensis
・ Odostomia skidegatensis
・ Odostomia socorroensis
・ Odostomia solidula
・ Odostomia sordida
・ Odostomia sorenseni
・ Odostomia sorianoi
・ Odostomia spreadboroughi
・ Odostomia stearnsiella
・ Odostomia stephensae
・ Odostomia striata
・ Odostomia striolata
・ Odostomia strongi
・ Odostomia subdotella


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

''Odostomia sillana'' is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.〔Rosenberg, G. (2011). ''Odostomia sillana'' Dall & Bartsch, 1909. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581251 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 short, yellowish white shell has a conic shape. (The whorls of the protoconch of the type specimen are eroded). Its length measures 5.6 mm. The 5½ whorls of the teleoconch are well rounded, slightly overhanging. The summits of the whorls are appressed. The whorls are marked by almost vertical lines of growth and numerous closely spaced, wavy, microscopic, spiral striations. The suture is well marked. The periphery of the body whorl is well rounded. The inflated base of the shell is rather short, narrowly umbilicated and marked like the spire. The aperture is broadly ovate, somewhat effuse anteriorly. The posterior angle is acute. The outer lip is thin, and strongly curved in the middle. The columella is slender, strongly curved and reflected anteriorly. It is provided with a weak fold near its insertion. The parietal wall is glazed by a thin callus. 〔 (Dall & Bartsch, A Monograph of West American Pyramidellid Mollusks, United States National Museum Bulletin 68, p. 222; 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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