4æžšã®ç¿¼ã‚’æŒã¤æç«œã®åŒ–石を発見ã€ã€Œéžå¸¸ã«é©šã„ãŸã€‚ã“ã®ã‚ˆã†ãªã‚‚ã®ã¯è¦‹ãŸã“ã¨ãŒãªã„ã€ä¸å›½æ±åŒ—部ã®é¼å¯§çœã«ã‚ã‚‹1å„„2500万年å‰ã®åœ°å±¤ã‹ã‚‰ã€æ‰‹è¶³ã«åˆã‚ã›ã¦4ã¤ã®ç¿¼ã‚’æŒã¡ã€é•·ã„尾を駆使ã—ã¦å¤§ç©ºã‚’飛んã§ã„ãŸã¨ã¿ã‚‰ã‚Œã‚‹æ竜「Changyuraptor Yangi(ãƒãƒ£ãƒ³ãƒ¦ãƒ¼ãƒ©ãƒ—トル・ヤンイー)ã€ã®åŒ–石ãŒç™ºè¦‹ã•ã‚Œã¾ã—ãŸã€‚ã“ã‚Œã¯ã€ç¾åœ¨ã®é³¥é¡žãŒæŒã¤ç‰¹å¾´ã«ä¼¼ãŸæ§‹é€ ã‚’æŒã¤ã‚‚ã®ã§ã‚ã‚Šã€ä»¥å‰ã‹ã‚‰å”±ãˆã‚‰ã‚Œã¦ããŸã€Œé³¥é¡žã¯æç«œã‹ã‚‰é€²åŒ–ã—ãŸã‚‚ã®ã§ã‚ã‚‹ã€ã¨ã„ã†èª¬ã‚’è£ä»˜ã‘ã‚‹ã‚‚ã®ã¨ã—ã¦æ³¨ç›®ãŒé›†ã¾ã£ã¦ã„ã¾ã™ã€‚ A new raptorial dinosaur with exceptionally long feathering provides insights into dromaeosaurid flight performance : Nature Communications : Nature Publishing Group http://www.nature.com/ncomms/2014/140
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