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我国南方上白垩统产丰富的恐龙蛋化石,但发现的恐龙骨骼化石的种类和数量相对较少。本文对湖南株洲天元区新发现的恐龙化石进行详细研究。初步分析结果表明该化石点恐龙种类丰富,可能包括至少两种蜥脚类、三种兽脚类和一种鸭嘴龙类。其中部分蜥脚类材料可能归属于梁龙超科,填补了该类群在东亚上白垩统的空白记录;一个蜥脚类坐骨则显示泰坦巨龙类的典型特征。兽脚类材料可能来自于小型的虚骨龙类、暴龙科和鲨齿龙科。前两者为晚白垩世的常见类群,而鲨齿龙科的化石记录在上白垩统非常少见。本文为鲨齿龙科可能在东亚一直延伸至晚白垩世提供了新的证据。该地区多门类恐龙化石的发现表明我国南方恐龙的种类可能比我们想象的要丰富得多,而且可能是梁龙类和鲨齿龙类的最后栖息地。株洲恐龙动物群的发现对于了解亚洲特别是中国恐龙的生物地理区系的分布具有重要意义。
In the south of China, Cretaceous dinosaur egg fossils are abundant, but the types and quantities of dinosaur skeleton fossils found are relatively few. In this paper, a detailed study of the newly discovered dinosaur fossils in Tianyuan District, Zhuzhou, Hunan Province, was conducted. The preliminary analysis shows that the fossil dinosaur species are abundant and may include at least two sauropods, three beetles and one dinosaur. Some of the sauropods may belong to the Diplodocus, filling in the gaps of this group in the Upper Cretaceous of East Asia. A sauropod shows the typical features of the Titans. Theropod materials may come from the small coyotes, tyrannosaurs and sharks. The first two are common in the Late Cretaceous, and the fossil records of the shark-dinosaur families are very rare in the Upper Cretaceous. This article provides new evidence that the shark-dinosaur may extend in East Asia to the Late Cretaceous. The discovery of various dinosaur fossils in the area suggests that the species of dinosaurs in southern China may be much more plentiful than we think and may be the last habitat for the genus Diptera and the genus Shark. The discovery of Zhuzhou dinosaur fauna is of great significance in understanding the distribution of the biogeographical flora of Asia, especially Chinese dinosaurs.