What Is the Triassic-Jurassic Extinction Event?

The Jurassic is a geological age, which is between the Triassic and Cretaceous, about 196 million BC (with an error of 600,000 years) to 145.5 million years (with an error of 4 million) year). The Jurassic is the second age of the Mesozoic, beginning with the Triassic- Jurassic extinction event. Although the rock marks of this period are very obvious and clear, the exact times of their beginning and end are like other ancient geological times, and cannot be determined with great accuracy.

Jurassic name comes from

There were some obvious geological and biological events during the Jurassic. maximum

At this time, the climate around the world is very warm,

Like other ancient distant geological times, the Cretaceous rock marks are very obvious and clear, but the exact time when they started can not be determined very accurately, and the error is between millions of years. There are no extinction events or biological evolution characteristics between the Jurassic and Cretaceous, and the two years can be clearly separated. The timing of the end of the Cretaceous is relatively accurate. It is generally thought that a huge meteorite hit the earth at that time, and there is a large pit near the Yucatan Peninsula in present-day Mexico. This meteorite caused a large number of biological extinctions, known as the Cretaceous-Tertiary extinction event. But this theory is now controversial.