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Xiongguanlong : ウィキペディア英語版 | Xiongguanlong
''Xiongguanlong'' is a genus of tyrannosauroid dinosaur that lived in the Early Cretaceous of what is now China. The type species is ''X. baimoensis'', described online in 2009 by a group of researchers from China and the United States, and formally published in January 2010. The genus name refers to the city of Jiayuguan, a city in northwestern China. The specific name is derived from ''bai mo'', "white ghost", after the "white ghost castle", a rock formation near the fossil site. The fossils include a skull, vertebrae, a right ilium and the right femur. The rocks it was found in are from the Aptian to Albian stages of the Cretaceous, between 125 and 100 million years ago. ==Description==
''Xiongguanlong'' was a bipedal animal which balanced its body with a long tail, like most other theropods. It was intermediate in size between earlier tyrannosauroids from the Barremian and later tyrannosaurids from the Late Cretaceous, such as ''Tyrannosaurus'', and has been estimated to weigh about . The vertebrae were more robust than in other basal tyrannosauroids, possibly to better support a big skull.〔Livescience: (”T. Rex Relative Fills Evolutionary Gap” ), 22-4-2009.〕 The skull had a long muzzle resembling that of ''Alioramus''.〔
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「Xiongguanlong」の詳細全文を読む
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