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恐龙是一类灭绝了的古爬行动物,生活在距今2.25亿年前的中生代,在地球上大约生存了1.5亿年。恐龙研究的主要对象是它们遗留在岩层中的遗骸(遗体)、遗迹(皮肤、足印)、遗弃物(蛋和粪)化石。恐龙化石在世界各大洲(包括南极大陆和北极的某些岛屿)都有发现。恐龙是研究生物大进化的最好例证。恐龙化石可作为洲际间的陆相地层对比的标志,它们的分布是大陆漂移的证据。而恐龙神秘、突然地在地球上消失,更是科学界一个难解之谜。近年,恐龙成了科幻小说、影视大片中的主角,世界范围内的“恐龙热”一浪高过一浪。
Dinosaurs, an extinct ancient reptile living in the Mesozoic dating back 225 million years ago, have lived on Earth for about 150 million years. The main targets of dinosaur research are remains (remains), remains (skins, foot prints), and discards (eggs and faeces) left in rock formations. Dinosaur fossils are found on all continents, including some on the Antarctic continent and the Arctic. Dinosaurs are the best examples of the great evolution of research biology. Dinosaur fossils can be used as a sign of inter-continental terrestrial stratigraphy, and their distribution is evidence of continental drift. The mysterious dinosaur, suddenly disappear on Earth, but also a mystery of the scientific community. In recent years, dinosaurs have become the protagonists in science fiction and television blockbusters. The “dinosaur fever” in the world has been wave after wave.