恐龙是地球历史上最为成功的一类爬行动物 ,它的起源、演化和绝灭一直是古生物研究领域的热点问题。我国恐龙化石的发现和研究在世界上占有重要的地位。从恐龙化石的产出情况来看 ,中国是一个当之无愧的恐龙大国 :恐龙化石分布地理范围广泛 ,西起新疆 ,东到辽宁 ,南起广东 ,北 Dinosaur is one of the most successful reptiles in the history of the earth. Its origin, evolution and extinction have always been the hot topics in paleontological research. The discovery and research of dinosaur fossils in our country occupy an important place in the world. Judging from the output of dinosaur fossils, China is a well-deserved dinosaur power: dinosaur fossils are distributed in a wide range of geographies, starting from Xinjiang in the west, east to Liaoning in the south, Guangdong in the south,