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Munditia subquadrata : ウィキペディア英語版 | Munditia subquadrata
''Munditia subquadrata'', common name the squared munditia, is a species of small sea snail, a marine gastropod mollusk, in the family Liotiidae.〔Marshall, B. (2013). ''Munditia subquadrata'' (Tenison Woods, 1878). Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=719266 on 2013-08-29〕 ==Description== The size of the shell varies between 3.5 mm and 6.5 mm. The Tasmanian specimen attains a diameter of 9 mm. The small, white, thickly shell has a discoid shape. It is flattened above. It is very finely undulately striate all over. The four whorls are angular above, coronate and radiately ribbed, rounded below, and furnished with two rounded obsolete granular keels. The umbilicus is very ample, with an elegantly dentate margin. The orbicular aperture is toothed.〔(Tenison-Woods, J.E. 1876. On some new Tasmanian marine shells. Papers and Proceedings of the Royal Society of Tasmania 1876: 131-159 ) (described as ''Cyclostrema immaculata'')〕
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