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Baseodiscus mexicanus : ウィキペディア英語版 | Baseodiscus mexicanus
''Baseodiscus mexicanus'' is a species of proboscis worm in the family Valenciniidae.〔http://www.marinespecies.org/aphia.php?p=taxdetails&id=156000〕 ==Description== This species commonly grows to 1 to 2 metres in length and 5 to 7 mm wide. It does not contract significantly when physically contacted or killed. When it does actually contract strongly, it has a flattened appearance, being widest immediately behind the back of the head. The part of the body containing the intestines is flat and broad. The posterior is very thin.〔http://nemertea.lifedesks.org/pages/839〕
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「Baseodiscus mexicanus」の詳細全文を読む
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