Researchers in one country have reported that they have found meteorites from about 200 million years ago in strata in a certain area, and they are likely to be traces of flying debris when a giant meteorite hit what is now Quebec, Canada  The clay layer, which is about 5 centimeters thick, also contains high concentrations of elements such as iridium and platinum, which are 50 to 2000 times higher than those normally found on the earth's surface  In addition, this rock also contains special minerals in the strata at the end of the Baikui period
Since the strata also contain marine plankton fossils, it can be determined that the impact period was about 215 million years ago
In ancient times, there were a number of meteorites hitting the earth