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Luidia ciliaris
The seven armed starfish (''Luidia ciliaris'') or is a species of starfish in the family Luidiidae. It is found in the eastern Atlantic Ocean and the Mediterranean Sea.〔
==Description==
''L. ciliaris'' is an orangeish-brown colour and has seven long arms radiating from a small disk. It is a large but fragile starfish, growing to forty centimetres across, and easily losing its arms (which afterwards regenerate). The arms have parallel sides and taper only near the tip. They have a conspicuous fringe of white spines along the margins. The upper surface is clothed in paxillae, spines shaped like a pillar with a flat top bearing tiny spinules. There are also many-lobed, nipple-like papillae. There are no marginal plates on the upper side of the arms but those on the lower side bear pedicellariae with two valves. The tube feet are long and numerous. They do not have suction pads but have two sets of terminal bulbs. The gonads are arranged in two rows along the length of the arms. There is a mouth at the centre of the underside, an oesophagus and a cardiac stomach but no intestine, pyloric stomach or anus.〔(Seven Armed Starfish (''Luidia ciliaris'') ) Marine Species Identification Portal. Retrieved 2011-08-28.〕〔(Seven-armed starfish - ''Luidia ciliaris'' ) Marine Life Information Network. Retrieved 2011-08-29.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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