Asteroids hit the earth.
Asteroids hit the earth.
About 65 million years ago, near Mexico's Yucatan Peninsula, a huge celestial body violently collided with the earth, which greatly changed the climate and environment of the earth, and the dinosaurs that ran around the world embarked on the road of extinction. However, according to the latest research, 200 million years ago, the rampage of dinosaurs was also attributed to asteroids. This conclusion was reached by scientists after careful study. Scientists have studied the rocks in more than 70 places where dinosaur fossils were found in North America, and come to the conclusion that dinosaurs have proliferated on the earth since the early Jurassic, and nearly half of the biological species on the earth died out before its heyday. These scientists believe that a large number of life on the earth began to disappear, which provided many opportunities for survivors such as dinosaurs and provided favorable conditions for them to expand their living space.
But what caused the extinction of life on earth? Scientists believe that before the dinosaurs flourished, the mass extinction of life on earth may have been caused by the violent collision between asteroids and the earth. In North America, scientists found a large number of rare metals called iridium in some rocks. Iridium is extremely low in rocks on earth, but it is common in asteroids and comets. The discovery of iridium in rocks indicates that the earth may collide with a whisperd.
The demise of opponents, the rise of dinosaurs
Kent is a professor at Rutgers University in America. He pointed out that the discovery of "iridium" in the ore provided a favorable "time mark" for the collision between celestial bodies and the earth. By connecting these with the biological conditions of Paleozoic and Mesozoic, we can clearly restore what happened 200 million years ago. Paleontologists' research on giant dinosaurs found that their relatively rapid breeding period was at the end of Triassic, about 265.438 billion years ago. It can be seen from the dinosaur footprint fossils found that it took only 50 thousand years for dinosaurs to transition from Triassic to Jurassic. Scientists speculated on this phenomenon. They believe that about 200 million years ago, a comet or asteroid collided with the earth, which had a very great impact on the earth, and then formed an environment conducive to the rapid reproduction of dinosaurs. Scientists' research is also trying to prove this. They believe that a violent collision between a celestial body in the universe and the earth may reduce the number of dinosaur survival opponents or even perish, thus providing extremely favorable conditions for dinosaurs to further adapt to the earth's environment and multiply rapidly. The impact of asteroids on the earth gave dinosaurs more favorable conditions, not an immature view, but a conclusion drawn by scientists after years of research.