How long did dinosaurs go extinct and when did dinosaurs go extinct

Dinosaurs were all extinct from the Late Cretaceous of the Mesozoic Era to the beginning of the Cenozoic Era from 60 million to 70 million years ago.

The dinosaurs became extinct in the late Cretaceous period, about 65 million years ago.

If you want, check out the Encyclopedia of Dinosaur Extinction.

Dinosaurs were 60 million years ago - 70 million years ago.

Extinct at the time of Satan's birth.

The extinction of the dinosaurs occurred 65 million years ago between the Cretaceous of the Mesozoic Era and the Paleogene of the Cenozoic Era, with a chronological error of 300,000 years.

Most of the animals and plants on the earth at that time were extinct, including dinosaurs, in addition to dinosaurs, the family Cangsauridae, plesiosaurs, pterosaurs, ammonite subclasses, and a variety of plants and invertebrates were also extinct in this event.

Mammals and birds survived and radiated to become dominant animals in the Cenozoic. Most scientists speculate that one or more causes were responsible for the extinction.

The Cretaceous-Paleogene extinction event is famous for causing the extinction of dinosaurs and the rise of mammals, but the Permian-Triassic extinction event, which wiped out about 95 of the earth's living beings at that time, was the most serious mass extinction event in geological time.

Dinosaur habits:

Herbivorous dinosaurs were limited by their height in the plants they could eat, so some small herbivorous dinosaurs would stand on their hind legs in order to eat the leaves of plants at high heights. Carnivorous dinosaurs fed on herbivorous dinosaurs and other animals. The different foraging patterns of various dinosaurs are also reflected in their teeth.

The sharp teeth and claws were the withered predators of carnivorous dinosaurs. Tyrannosaurus dinosaurs often went it alone because they sought out lone herbivorous dinosaurs. Some dinosaurs would move in groups, locking on to their prey and swarming and slicing open the prey's abdomen with the second finger of their claws.

Herbivorous dinosaurs generally had some special "equipment" to deal with the attacks of carnivorous dinosaurs, which sometimes consisted of tough leather armor, bone clubs, or bone spikes, and sometimes powerful tails. Such as the mallet dragon and other manuscripts. Large herbivorous dinosaurs would act in groups, and once threatened, they would collectively hold their ground and fight back.

The dinosaurs disappeared at the end of the Cretaceous period.

Scientists have proposed that the disappearance of dinosaurs was caused by the climate and environment, which is based on the discovery of a large number of ancient plant fossils and the study of dinosaur fossils. For example, dinosaurs and contemporaneous ancient plant fossils have been found in the Arctic, and the Arctic was a forest 65 million years ago, and there were dinosaurs in the forest. 65 million years later and still ice?

Around 65 million years, the distribution of the same plant on the earth changed, such as the food of the dinosaurs, ferns, which were widely distributed during the dinosaur period, but after 65 million years, the fern fossils were decreasing in size and decreasing. Scientists have concluded that climate change is causing such a result, but scientists just haven't found out who has so much energy to "control" the climate and environment of the entire planet? But scientists have not found out what is causing the change in the Earth's climate and environment?

There is a captive in the origin of the moon that before and after the captivity, there must have been a big change on the earth! Scientists have made many discoveries in this regard, such as when studying the shape of the earth, they found that the shape of the earth is not standard spherical, and scientists found that the shape of the earth was not standard at the end of the Cretaceous period? Moreover, it was found that the continents of the earth at that time drifted and there were orogenies.

These conclusions are consistent with the study of the extinction of the dinosaurs, which includes the hypothesis of the extinction of the dinosaurs, which was caused by orogeny and continental drift.

The latest scientific research shows that the four seasons on Earth are caused by the moon again, and the climate and environment of the Arctic and the equator are the same in the age of the dinosaurs. So the dinosaurs were killed by the moon. The Moon entered its current orbit around 65 million years ago, and some unsolved scientific mysteries were solved.

If it was a meteorite that hit the earth and caused a volcanic eruption, which led to the extinction of the dinosaurs, this does not explain why the earth did not return to the climate and environment of the dinosaur period after the extinction of the dinosaurs. Nor can it be reasonably explained that the latest discovery in Nanxiong, Guangdong, that dinosaurs survived here for about 250,000 years after a meteorite hit the earth? The "extinction" of the dinosaurs could not have been caused by meteorites hitting the earth, nor could it have been caused by volcanic eruptions caused by meteorites hitting the earth.

How much energy would a direct impact have to produce to cause the extinction of the dinosaurs of the entire planet?

Second: Why did the impact only make the dinosaurs or some creatures extinct? And why did other creatures survive? How to explain it?

Third: After the impact, why did the earth not return to the same climate as before? Or is it closer to the climate of the dinosaurs?

Fourth: After the impact, there are more and more types of life on the earth, not less and less?

Personal original point of view.

According to the stratigraphic analysis of the existence of dinosaur fossils, dinosaurs became extinct about 65 million years ago.

Dinosaurs are a representative species of the Mesozoic Era, which appeared in the late Triassic period of the Mesozoic Era, about 100 million years ago. After the Mesozoic Era, the Triassic, Jurassic, and Cretaceous periods suddenly became extinct at the end of the Cretaceous period, about 65 million years ago. Dinosaurs survived on Earth for hundreds of millions of years.

Dinosaurs first appeared in the Triassic period about 240 million years ago and died out in the Cretaceous period about 65 million years ago during the late Cretaceous mass extinction event of the Mesozoic Era.

Dinosaurs were a group of animals that lived between 235 million and 65 million years ago, and were able to walk upright with some hind limbs, and dominated the world's terrestrial ecosystems for more than 160 million years. Most of the dinosaurs have gone extinct, but the descendants of the dinosaurs, the birds, have survived and survived to this day.

Dinosaurs (English: dinosaur) are a group of terrestrial animals that lived about 235 million to 65 million years ago, and are a diverse group of dominant vertebrates in the Mesozoic, most of which belong to terrestrial (land-dwelling) reptiles, but cannot walk upright, and have dominated the global terrestrial ecosystem for more than 160 million years. The reason why it is said to be vertebrates and not reptiles is that dinosaurs were once classified as reptiles, but they did not meet one of the basic characteristics of reptiles

The creeping way of walking is a cold-blooded animal that has always been questioned.