论文部分内容阅读
一件包括部分头骨、下颌、肠骨等的不完整兽脚类恐龙骨架发现于辽宁喀左早白垩世九佛堂组中,估计身体全长可达9~10m。其前颌骨主体部分高、肠骨外侧面具显著的直立的嵴等特征表明该化石应归霸王龙类。它以外鼻孔大、上颌骨背缘前部略内凹、上颌骨孔向前达眶前窝前缘、腹缘与眶前窝腹缘存在较大距离等特征不同于晚白垩世的霸王龙科分子,故被命名为一新属种——喀左中国暴龙(Sinotyrannus kazuoensis gen.etsp.nov.),或许代表了最早的霸王龙科类型。该属种是已知个体最大的前晚白垩世霸王龙类,也是辽西及周边地区热河生物群中个体最大的兽脚类恐龙。它的发现不仅表明东亚是霸王龙类最主要的演化地区之一,而且为探讨霸王龙科的起源、热河生物群的组成与生态系统等提供了重要依据。
A complete skeleton of theropod dinosaurs, including parts of skulls, jaws, and intestines, was found in the Cretaceous Kaufutang Formation in Kazuo, Liaoning Province, with an estimated total body length of 9-10 m. The main body of the part of the high jaw, the lateral outline of the iliac bone significantly upright crista and other characteristics of the fossil should belong to the king class. It is characterized by a large nostril, a slightly concave anterior part of the maxilla, anterior superior maxillary fossa leading to the anterior border of the anterior orbital fossa, and a large distance between the abdominal margin and the abdominal margin of the anterior orbital fossa, which is different from the Late Cretaceous Tyrannosauridae Molecular, so it is named a new species - Kazuo Chinese tyrannosaurus (Sinotyrannus kazuoensis gen.etsp.nov.), Probably the first Tyrannosaur type. This genus is known as the largest Late Cretaceous tyrannosaur known to individuals and is also the largest animal of the Rehe biome in western Liaoning and surrounding areas. Its discovery not only shows that East Asia is one of the most important evolutionary areas of tyrannosaurs, but also provides an important basis for exploring the origin of Tyrannosauridae and the composition and ecosystem of Jehol Biota.