Did birds evolve from dinosaurs? Why did dinosaurs eventually evolve into birds?

There is such a theory, but science has not yet given an accurate explanation, and one of the dinosaurs is called pterosaurs, which may be the ancestor of birds.

In 1868, Huxley proposed the hypothesis that birds originated from dinosaurs。Huxley was a well-known British biologist and a staunch supporter of Darwin's theory of evolution. At the same time, he was also the first scholar to propose the theory that birds originated from dinosaurs.

Chinese long-haired dinosaurs, such as the Chinese dragon, were the first dinosaur fossils to have truly forked feathers。The discovery of this fossil caused a huge stir in the international paleontological community and is considered the most important and latest evidence for the theory that birds originated from dinosaurs. Some scholars even believe that the dinosaurs did not go extinct.

All the birds we see are dinosaurs, and hummingbirds living in South America naturally became the smallest dinosaurs.

This is because it is still hard to believe that the dinosaurs were completely extinct, so it may have evolved.

Because dinosaurs have some genes that are partially similar to birds.

This is the conclusion of some fossil research.

Dinosaur 5: What is the truth about the extinction of dinosaurs, did they evolve into birds? Whether this claim is credible or not.

This is because the species of birds are genetically similar to those of dinosaurs.

Be.

Giant dinosaurs degenerate into small birds? Could it be that degradation is also an evolution? This question itself is problematic, because evolution is actually evolution in the sense of filial piety, there is no "advance and retreat", all evolution is carried out by animals in order to adapt to changes in the environment, as long as they exist, it proves that their evolution is successful.

Second, it was certainly impossible for a giant dinosaur to evolve into a bird. The origin of birds has always been controversial, because many transitional fossils in the evolution of birds have not been found, and the reason why birds and dinosaurs are involved together is that scientists have a close relationship with existing birds through genetic analysis of dinosaur fossils, and then combined with some small and feathered dinosaur fossils that have been found, and finally determined that there is an evolutionary relationship between birds and dinosaurs.

According to this theory, chickens are a type of bird, which is why there is a saying that "huge dinosaurs degenerated into small birds". But in fact, these statements are all taken out of context, for example, the chicken evolved from the Tyrannosaurus rex, which is taken from an academic ** published by a scientific research team in the journal "Science" in 2008, which has a paragraph The general meaning of Zheng Si is that the scientific research team found through the fossil analysis of the Tyrannosaurus rex that the protein sequence in the body of the Tyrannosaurus rex has a high degree of similarity with the protein sequence of the chicken.

There is a close kinship between the two.

There is a class of dinosaurs that are not only small in size, but also very similar in morphology to birds, and this is the evolved small theropod dinosaurs. Most paleontologists now believe that birds evolved from these dinosaurs.

Some paleontologists even simply believe that birds are living dinosaurs. It was thought that the wishbones, sternum, hollow bones, long forearms, and wrists capable of lateral adduction were the skeletal features of birds; It is also believed that only birds have the behaviour of incubating eggs and caring for their young.

Study the significance of dinosaurs

Because humans evolved, we evolved from very small cells, from fish to the nearest ancestral primates, dinosaurs are the best medium to study this whole evolution, to understand what humans will evolve into, first of all, understand how we evolved:

First: Dinosaurs are the overlords of the land that have been breeding for hundreds of millions of years.

They have thousands of species and are extremely diverse. Dinosaurs also include the largest land animals ever created, so they provide important material for biology, large-scale evolution, through the understanding of dinosaur fossils to study dinosaur weight, bones, body color, footprints, calls, body temperature, habits, calls, eggs, and so on.

Second, study the relationship between life and the environment.

Dinosaurs survived for hundreds of millions of years, it is an entire ecosystem, and dinosaurology allows us to study a long-term one. Real ecosystem. Modern science has only existed for a few hundred years, and its view of ecosystem change is very limited.

The earth has become what it is because there is so much human interference in the ecosystem.

Throughout prehistoric times, dinosaurs had to deal with major changes in climate, major geological disasters, rising and falling sea levels, extinctions of important species, invasions of alien species, asteroid impacts, all of which were recorded in fossils.

It was the large dinosaurs that became extinct and the remaining small dinosaurs evolved, and there was a fossil found at the beginning, CCTV has an episode of man and nature or exploration and discovery. I don't quite remember.

Captured: At the end of the Cretaceous period, many dinosaurs did disappear from the earth, such as the huge Diplodocus, Mamenxisaurus, and Hadosaurus, but one branch still survived, that is, the hyposkeleton (petite, agile, jumping life).They gradually evolved into small dinosaurs with feathers on their bodies, and hairy dinosaurs such as Chinese dragon birds, Chinese ornithosaurus, and tail feather dinosaurs have been found in China.

Isn't it a bird with hair?

For more than 100 years, it has been thought that only birds grow feathers, and Archaeopteryx is a good example. Even the textbook definition of a bird specifically uses feathers as its patent. Today, it is estimated that this view needs to be revisited.