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Pisidium milium : ウィキペディア英語版 | Pisidium milium
''Pisidium milium'' is a species of very small freshwater bivalve in the family Sphaeriidae, the fingernail clams and pea clams. ==Description== The 3-4.5mm. shell is tumid (swollen). It is more rectangular than other ''Pisidium'' and has broad, swollen umbos which lie behind the mid point. The surface (periostracum) is very glossy, with irregular, concentric striae. The colour is yellow to pale brown.
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「Pisidium milium」の詳細全文を読む
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