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Bathycrinus aldrichianus : ウィキペディア英語版 | Bathycrinus aldrichianus
''Bathycrinus aldrichianus'' is a species of sea lily, a crinoid in the family Bathycrinidae. It is native to deep water in the North Atlantic Ocean.〔 It was first described by the Scottish marine zoologist Charles Wyville Thomson (who had been chief scientist on the ''Challenger'' Expedition) and named in honour of Pelham Aldrich, a British naval officer and explorer.〔(【引用サイトリンク】title=The Tumbrel Diaries: Christmas Island )〕 It is believed to be the crinoid living at the greatest depth. ==Description==
''Bathycrinus aldrichianus'' is a ten-armed sea lily, the first and second arms, the fourth and fifth, and the seventh and eighth having syzygies (being joined together at the base). The arms are connected to the base ring of the crown and consist of a series of jointed rectangular plates with ribs on the exterior surface. The stem usually has twelve or more columnals (stem portions) but sometimes has rather fewer, with a minimum of five. It is attached to the substrate by elongated, jointed cylindrical plates that spread out in a rootlike fashion. The crown is held up to above the sediment.〔
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「Bathycrinus aldrichianus」の詳細全文を読む
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