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Lottia digitalis : ウィキペディア英語版 | Lottia digitalis
''Lottia digitalis'' common name the "fingered limpet" or ribbed limpet, is a species of sea snail, a true limpet, a marine gastropod mollusk in the family Lottiidae. These limpets are usually found on the surface of rocks in the high intertidal region 〔Light and Smith Manual, p. 11 (4th Ed., 2007)〕 on the coastal fringes of the north east Pacific Ocean.〔(Marine Biodiversity of British Columbia )〕 ==Description== This limpet grows up to thirty millimetres long and is shaped like a low cone with the apex close to the anterior edge. The anterior slope is concave and sometimes overhanging. The posterior slope is convex and has heavy radial ribbing and the margin is somewhat lobed and irregular. The shell characteristics are very variable. The color is usually brown or dark olive with white patches.〔(Eogastropoda: Rocky Shore Limpets )〕
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