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''Titiscania'' is a genus of slug-like sea snails, shell-less marine gastropod mollusks in the superfamily Neritopsoidea. ''Titiscania'' is the type genus〔 and also the only genus in the family Titiscaniidae. The original vernacular spelling "Die Titiscanien" by Rudolph Bergh (1890)〔 was Latinized by Johannes Thiele in 1891.〔 Excepting some parasitic forms, ''Titiscania'' is the only genus of gastropod outside of the Heterobranchia to have secondarily lost its mineralized shell, which it sheds after its larval phase.〔Kano Y., Chiba S. & Kase T. (2002). "Major adaptive radiation in neritopsine gastropods estimated from 28S rRNA sequences and fossil records". ''Proceedings of the Royal Society B: Biological Sciences'' 269: 2457. .〕 == Species == Species within the genus ''Titiscania'' include: * ''Titiscania limacina'' Bergh, 1890〔Bouchet, P. (2010). ''Titiscania limacina'' Bergh, 1890. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=532065 on 2011-03-26〕 * ''Titiscania shinkishihataii'' Taki, 1955〔Bouchet, P. (2010). ''Titiscania shinkishihataii'' Taki, 1955. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=532066 on 2011-03-26〕 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「Titiscania」の詳細全文を読む スポンサード リンク
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