江西赣州地区恐龙动物群研究

In recent years, many beautifully preserved dinosaur eggs (nests, embryos) and other reptiles (including theropod dinosaurs, sauropod dinosaurs, lizards and turtles) have been discovered from Ganzhou and its surrounding areas, forming a distinct Late Cretaceous dinosaur fauna—Ganzhou Dinosaurian Fauna, and becoming one of the most important Late Cretaceous dinosaur localities. This dinosaur fauna is dominated by oviraptors, together with sauropod dinosaurs, lizards and turtles. The Late Cretaceous deposits in Jiangxi Province are not only well-exposed, but they are also widely distributed. In addition, several years ago dinosaurs (dinosaur eggs) were found in many of the red colored sedimentary basins. This study will focus on the systematic study of the Ganzhou Dinosaurian Fauna. We will conduct a geological survey and expect to find important new dinosaurs, and we will make a comprehensive study of the specimens that were recently discovered but not yet studied and the new specimens. The systematic position of oviraptors from Ganzhou and its surrounding areas will be analyzed phylogenetically within Oviraptorosauria, and in addition, the migration, evolution and paleobiogeographical distribution of oviraptors will also be explored. The related Late Cretaceous dinosaur faunas, such as the Henan Luanchuan fauna, the Heilongjiang Jiayin dinosaur fauna, and the dinosaur fauna from the Nemegt Basin of Mongolia will be compared, and their similarities, differences, paleoecology, and paleoenvironments will be discussed.

最近几年，在赣州及其周边地区，发现了大量的保存精美的恐龙蛋（窝、胚胎蛋）化石，以及其它爬行动物化石（包括兽脚类恐龙、蜥脚类恐龙、蜥蜴类及龟类），构成了一个明显的晚白垩世恐龙动物群——赣州恐龙动物群，使得该地区成为我国晚白垩世最重要的化石产地之一。该恐龙动物群主要以窃蛋龙类为主，还兼有蜥脚类、蜥蜴类及龟类。另外，在江西境内晚白垩世地层不仅出露最好，而且分布面积广，在许多红色盆地几年前都有恐龙（恐龙蛋）化石的发现。本研究将对该恐龙动物群进行系统研究，并对该地区晚白垩世以恐龙为主的考察和研究，对已发现还没有研究的以及可能发现的重要恐龙化石进行综合研究。支序系统分析研究赣州及其周边地区窃蛋龙类的位置关系，同时探讨窃蛋龙类的迁移、演化及古生物地理分布。与相关的晚白垩世恐龙动物群，比如河南栾川动物群、黑龙江嘉荫恐龙动物群及蒙古国的纳麽盖特盆地的恐龙动物群等相对比，以探讨其异同及古生态古环境。

本项目主要以江西赣州地区新发现的恐龙骨骼化石和恐龙蛋化石为研究对象，通过系统调查和研究赣州地区发现的恐龙骨骼化石，理清了赣州地区恐龙动物群组合面貌，主要以小型兽脚类（窃蛋龙类）为主，其次包含少量大型蜥脚类（多椎孔类）和大型兽脚类（暴龙类）。通过研究赣州地区及其他已知的窃蛋龙类化石，理清了窃蛋龙类谱系演化关系，并认为窃蛋龙类头骨形态和功能的多样性在窃蛋龙类演化分异过程中起到了决定作用。通过对赣州地区发现的恐龙蛋化石研究，探讨了窃蛋龙类孵卵行为，认为体型较小的窃蛋龙类孵卵时身体与蛋直接接触，体型较大的窃蛋龙类孵卵时主要集中在蛋窝中间空白处，尽管身体也可直接与蛋接触，但尽量减少或避免对蛋的压力。通过对赣州恐龙动物群化石产地的综合调查，基本理清了赣州地区恐龙骨骼化石和恐龙蛋化石分布规律及埋藏环境。通过对其他相关重要生物群发现新化石材料的研究，建立了多个古生物化石新属种，为中生代恐龙、恐龙蛋、翼龙和鸟类等演化分布研究提供了重要化石证据。