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Echinus tylodes : ウィキペディア英語版 | Echinus tylodes
''Echinus tylodes'' is a species of sea urchin in the Echinidae family. It is white with rather sparse pink spines, and is endemic to the eastern coast of North America including the Gulf of Mexico.〔 ==Description== ''Echinus tylodes'' has a subglobular test about two-thirds as high as it is wide and grows to a diameter of . The joints between the ambulacral plates and the pores through which the tube feet project are both sunken below the general surface of the test. The tubercles to which the primary spines are attached are slightly raised, making it appear as if they are on vertical ridges. The primary spines are short and stout, and the test is easily visible as few secondary spines occur. The general colour of this urchin is white and it has pink spines.
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「Echinus tylodes」の詳細全文を読む
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