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Cossmannica
''Cossmannica'' is a genus of sea snails, marine gastropod mollusks in the family Pyramidellidae, the pyrams and their allies.〔Rosenberg, G. (2011). ''Cossmannica'' Dall & Bartsch, 1904. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=588553 on 2011-11-29〕 ==Description== The surface of the shell is polished, marked by faint lines of growth and microscopic spiral striations. The shell is not umbilicated. The basal fasciole is absent. The aperture is suboval. There are two columellar folds. 〔 (A Monograph of West American Pyramidellid Mollusks, United States National Museum Bulletin 68, p.10; 1909 ) 〕
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Cossmannica」の詳細全文を読む
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