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Afrolittorina knysnaensis : ウィキペディア英語版 | Afrolittorina knysnaensis
''Afrolittorina knysnaensis'', common name the southern periwinkle, is a species of sea snail, a marine gastropod mollusk in the family Littorinidae, the winkles or periwinkles. == Description == The size of the shell varies between 9 mm and 15 mm. Its color varies from brown with a pattern of dots with a dark ring around its every whorl, to pure black. The smooth shell has a conical shape with a short spire. The aperture is subcircular and has a transparent, horny operculum.
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「Afrolittorina knysnaensis」の詳細全文を読む
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