恐龙英语短文40字

The Earth's history has been 45 billion years. Constraints in the 38 million years ago before the emergence of the earliest organisms. Since then, much of the planet has experienced the rise of biotechnology, the course of the decline until extinction, only the fossils so far retained. Now the world can be found in various periods of different types of fossils, these fossils tell the history of our planet earth-shaking changes. Dating back more than 200 million years ago, life on Earth has a group of organisms - the dinosaurs. They are very popular and dominate the Earth to reach 1.5 million years old. In humans before the advent of dinosaurs had become extinct, and no one to see live dinosaurs. Today, we know everything about dinosaurs from the dinosaur fossils come. As people found their bones, teeth, egg fossils, and skin marks, footprints, and other cave sites, the scientists on the basis of these clues to discover the secrets of the dinosaurs. 翻译：地球的历史已经四百五十〇点零亿年。约束在38万年前最早的生物出现前。自那时以来，地球上的很多经历了生物技术的兴起，减少直至灭绝的过程中，只有化石至今保留。现在，全世界可以在不同类型的化石发现不同时期，这些化石告诉我们这个星球的地球历史翻天覆地的变化。 早在200多万年前，地球上生命的生物群体 - 恐龙。他们非常受欢迎，主宰地球将达到150万岁。 在人类前恐龙灭绝的来临已经成为，也没有人看到活恐龙。今天，我们知道从恐龙化石恐龙的一切来。当人们发现他们的骨头，牙齿，蛋化石，皮肤标志，足迹和其他洞穴遗址，对这些线索的基础上，科学家发现了恐龙的秘密。 累了我一天才完成的！！！

恐龙是生活在距今大约2亿3500万年至6500万年前的、能以后肢支撑身体直立行走的的一类动物，支配全球陆地生态系统超过1亿6千万年之久。大部分恐龙已经灭绝，但是恐龙的后代——鸟类存活下来，并繁衍至今。恐龙”一词在字典中意思：一类生活在几亿年以前的古动物，现已灭绝.Dinosaurs lived about 200 million in 3500 million years ago to 6500 million years ago, can support the body upright limb of a class of animals, the control of global terrestrial ecosystems over 100 million 6 million years. Most dinosaurs have become extinct, but the descendants of dinosaurs - birds, survive and reproduce so far. Dinosaur "in the dictionary has two meanings: one living in hundreds of millions of years ago the ancient animal, now extinct.

Dinosaurs are very large creatures which appeared on the earth millions of years ago. They became extinct many years later because of a change in climate and they could no longer find any food to eat. Today, people know that dinosaurs had once existed because scientists discovered the remains of their bones when they dug underneath the ground. We can see the skeletons of these dinosaurs now in the museums.

The DinosauriaDinosaurs, one of the most successful groups of animals (in terms of longevity) that have ever lived, evolved into many diverse sizes and shapes, with many equally diverse modes of living. The term "Dinosauria" was invented by Sir Richard Owen in 1842 to describe these "fearfully great reptiles," specifically Megalosaurus, Iguanodon, and Hylaeosaurus, the only three dinosaurs known at the time. The creatures that we normally think of as dinosaurs lived during the Mesozoic Era, from late in the Triassic period (about 225 million years ago) until the end of the Cretaceous (about 65 million years ago). But we now know that they actually live on today as the birds.