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Isognomon alatus : ウィキペディア英語版 | Isognomon alatus
''Isognomon alatus'', the flat tree oyster, is a species of bivalve mollusc in the family Isognomonidae. It can be found along the Atlantic coast of North America, ranging from southern Florida to Brazil and Bermuda. ==Description== The flat tree oyster has two thin, irregularly shaped valves joined by a long straight hinge. The exterior is sculptured by a large number of rough, concentric rings with loose flakes and varies in colour from a pale brownish olive to a purplish black. The nacre on the inside is lustrous and cream coloured shaded with purplish brown. The shell is attached to the substrate by a byssus thread and grows to about in length.
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「Isognomon alatus」の詳細全文を読む
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