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Turbonilla magdalinensis : ウィキペディア英語版 | Turbonilla magdalinensis
''Turbonilla magdalinensis'' is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.〔Rosenberg, G. (2012). ''Turbonilla magdalinensis'' Bartsch, 1927. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=576060 on 2012-03-01〕〔Keen M. (1971). Sea shells of Tropical West America. Marine mollusks from Baja California to Perú. (2nd edit.). Stanford University Press pp. 1064〕 ==Description== The bluish white shell has an elongate conic shape. The length of the shell measures 7.4 mm. The teleoconch of the type specimen contains 11½ whorls, marked by very fine, closely spaced, incised spiral lines.The short, rounded base of the shell shows rather strong incremental lines and the same spiral sculpture as seen on the spire. The oval aperture has a thin outer lip. The inner lip is slightly sinuous and reflected over. The parietal wall is covered by a thin callus. 〔 (P. Bartsch (1927), New West American Marine Mollusks, Proceedings of the U.S. National Museum, vol. 70 art II p. 4-5 ) 〕
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