A NEW CARNOSAUR (DINOSAURIA, THEROPODA) FROM THE JURASSIC OF XINJIANG, PEOPLES-REPUBLIC-OF-CHINA
A NEW CARNOSAUR (DINOSAURIA, THEROPODA) FROM THE JURASSIC OF XINJIANG, PEOPLES-REPUBLIC-OF-CHINA
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DOI：
10.1139/e93-179
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发表时间：
1993-10-01
影响因子：
1.4
通讯作者：
ZHAO, XJ
中科院分区：
文献类型：
--
作者：
CURRIE, PJ;ZHAO, XJ
1987年，一个名为“中国-加拿大-阿尔伯塔-埃克斯特拉”的中加探险队在中国西北准噶尔盆地上侏罗统石树沟组发现了一具大型兽脚亚目恐龙骨架。这具保存完好的骨架缺少了大部分的尾巴和大部分的手臂，但除此之外几乎是完整的。新的属和种，东伊Sinraptor，代表了兽脚亚目恐龙进化的一个鲜为人知的阶段，尽管一个相关的形式，巨龙，是第一个被描述和命名的恐龙（由W. Buckland在1824年）。迅猛龙的下颌有一个大的气孔，明显的后腭褶皱，一个相对较长的颞间条，其中后腭在侧面看起来很短，还有一个气腭。它比阿根廷的Piatnitzkysaurus更先进，比异特龙更少，并显示出与阳川龙最相似的地方。迅猛龙的眶前颅骨长度比阳川龙长，但相对较低。最近在四川发现的一个被称为“阳川龙”的标本代表了另一种迅猛龙。迅猛龙和阳川龙组成了一个新的兽脚亚目恐龙家族，迅猛龙科。
In 1987, a Sino-Canadian expedition known as the Dinosaur Project (China - Canada - Alberta - Ex Terra) discovered a large theropod skeleton in the Upper Jurassic Shishugou Formation of the Junggar Basin in northwestern China. The well-preserved skeleton lacks much of the tail and most of the arms, but is otherwise nearly complete. The new genus and species, Sinraptor dongi, represents a poorly understood stage of theropod evolution, even though a related form, Megalosaurus, was the first dinosaur described and named (by W. Buckland in 1824). Sinraptor has a large pneumatopore in the jugal, a pronounced postorbital rugosity, a relatively long intertemporal bar in which the postorbital appears very short in lateral aspect, and a pneumatic palatine. It is more advanced than Piatnitzkysaurus from Argentina, less derived than Allosaurus, and shows its strongest similarities to Yangchuanosaurus. The preorbital skull length of Sinraptor is relatively longer than in Yangchuanosaurus, but the skull is relatively lower. A specimen from Sichuan recently described as '' Yangchuanosaurus '' hepingensis represents a second species of Sinraptor. Sinraptor and Yangchuanosaurus are united in a new family of theropods, the Sinraptoridae.