Who knows if the dinosaurs perished or evolved into other animals?

The dinosaurs did not become extinct, the descendants of the pterosaurs were Archaeopteryx, and the descendants of Archaeopteryx were the birds of today! Some of the water monsters we are talking about today are the dinosaurs that survived.

Hehe, hello, I also like the past of dinosaurs, and many scientists say that dinosaurs became extinct because of the collision of meteorites, but many animals have been found to have the appearance of dinosaurs, such as crocodiles, and they are very similar to dinosaurs in the water, and the four branches and eyes = are similar to dinosaurs, so I think dinosaurs have evolved.

Some scientists believe that birds may be descendants of dinosaurs.

Why did dinosaurs dominate the earth for more than 100 million years but failed to evolve into higher animals?

Most of the birds evolved from dinosaurs, and the highest degree of recognition in the academic community is the theory that small dinosaurs evolved into birds based on the fossils of Archaeopteryx in China, such as lizards and crocodiles, all of which evolved from reptilian dinosaurs. Among the currently known dinosaur species, there are tachysaurs, microraptors, ornithosaurs, ochrosaurs, etc., which are very close to birds, and then there are half-dragons and half-birds creatures of dragons and birds, which may be excessive species of dinosaurs that evolved into birds.

Abstract:In the period 65 million years ago, an asteroid hit the earth, its diameter is about 10 cm, the occurrence of this sudden event also triggered the fifth mass extinction of the earth, many people believe that the extinction event is only temporary, but according to the current scientist research, this extinction event actually experienced a long time.

Paleontologists also found a lot of dinosaur fossils, which means that dinosaurs did not become extinct soon in the disaster at that time, and a small number of dinosaurs still persisted for a long time, and the specific reason for the complete extinction of dinosaurs may be due to the major changes in the earth's environment at that time, which caused the food chain of dinosaurs to break, that is to say, these former "overlords" were starved to deathSo, why did the crocodile that existed at the same time as the dinosaurs survive until now?

Crocodiles often live in rivers, lakes and other areas, they are separated from the living area of dinosaurs, we all know that the skin of crocodiles is very hard, this is its protective cover, and the bite force of adult crocodiles is very amazing, which makes dinosaurs helpless against them, so at that time,Crocodiles and dinosaurs have maintained a relatively friendly relationship, coupled with the fact that crocodiles have survived for a long time, which has allowed crocodiles to survive until now.

Crocodiles have a very strong ability to fight hungerAfter people's research on crocodiles, we found that crocodiles will first hide their bodies in the water when hunting, slowly approach the prey, and then launch a surprise attack when they reach the vicinity, which can reduce the physical consumption of crocodiles, and crocodiles can also survive for a long time without eating for a long time, which is also incomparable to dinosaurs.

Crocodiles are very cooperative, and crocodiles often attack in groups when hunting, and this high level of cooperation makes it easier for them to hunt large animalsUnlike dinosaurs, crocodiles share their prey with their companions, and this behavior is key to the crocodile's survival until now.

Because of the extinction of dinosaurs, crocodiles have developed rapidly, but with the overhunting of people and changes in the natural environment, the number of dinosaurs is getting smaller and smaller, and there are only more than 20 crocodile species still alive, and many crocodile species are listed as endangered species in the country.

Categories: Science & Engineering.

Problem description: Why are they so big?

Analysis: Dinosaurs appeared around the middle to late Triassic. Therefore, the ancestor of the dinosaurs is supposed to be some kind of reptile from the early Triassic period.

In the early Triassic period, there were many reptiles active on the earth, among which mammal-like reptiles were the most abundant and were a large race; The other species of reptiles are relatively backward and inconspicuous small races. The ancestors of the dinosaurs were part of these small races.

The fossils in the strata are the archives of our dinosaur ancestors. The information contained on the fossils "tells" us that the old-timers of the dinosaurs were molar-toothed reptiles, and that the pseudocrocodiles of this group were the most closely related to the dinosaurs. A pseudocrocodile is a carnivorous reptile with a body length of about one meter, which looks a bit like a crocodile and a bit like a dinosaur.

It has long posterior branches and short forelimbs, and can walk on its hind limbs. The tooth grows in the alveolar area. Anatomically similar to early dinosaurs.

What kind of animals did dinosaurs originate from? Scientists don't agree yet!

Some believe that dinosaurs were differentiated from a single ancestor, which was a member of the alveolar family, such as animals like the pseudocrocodile. Due to the prosperity of this family, many children and grandchildren were born, and evolved into the dinosaurs that dominated the earth in the Mesozoic Era.

But there are also those who believe that there was not just one ancestor of dinosaurs, maybe two or three, and that they belonged to different members of the alveolar family. Therefore, their offspring have a variety of appearances and different living habits.

Dinosaur scholars have different views on the origin of dinosaurs, but one thing is unanimous: the identification of allotted reptiles as the ancestors of dinosaurs.

In fact, alveolars are not only the ancestors of dinosaurs, scientists have found that they are also the ancestors of crocodiles and pterosaurs.

In the future, with the continuous discovery of fossils and more and more evidence, the question of the origin of dinosaurs will be gradually solved.

I'm afraid there aren't, except for birds.

According to the fossil evidence found so far, one of the dinosaurs grew feathers more than 100 million years ago, began to flapping their forelimbs, and eventually evolved into birds.

With the exception of birds, dinosaurs, large and small, all went completely extinct in a very short period of time 65 million years ago, leaving no descendants.

From the perspective of existing reptiles, there are four main categories, namely snakes, lizards, turtles and turtles, and crocodiles. These types of reptiles began to appear relatively early, and they are all contemporaries of dinosaurs, and there is no theory of whether they were dinosaur evolutionaries or not. Among the other species, except for birds, which have direct fossil evidence of an evolutionary relationship with dinosaurs, no other species have been found to have a similar relationship.

Therefore, it can only be assumed that dinosaurs did not evolve into other species except birds.

Apart from birds, no other animal evolved from dinosaurs.

Except that the birds are gone, there is still no evidence.

Dinosaurs are extinct, so what other animals have coexisted with dinosaurs?

65,000 years ago, at the end of the Cretaceous period, most marine life went extinct, including many shellfish, corals, and molluscs. The only reptiles in the water are turtles and crocodiles. On land, dinosaurs disappeared, and many birds died.

The only reptiles left are crocodiles and turtles. Many other animals have become extinct, as have many birds. The dragon (the dragon was present, breathing fire and spewing cold air, and it was the ancient Westerners who often challenged it to cause its extinction) became extinct after the dinosaurs.

The legendary giants (ancient murals of giant fossils and giants with dinosaurs) may have gone extinct along with the dinosaurs.

In the Mesozoic Era, more than 200 million years ago, many reptiles lived on land, so the Mesozoic Era is also known as the "Reptile Age". They continue to diverge into a variety of different species of reptiles, some of which have become today's turtles, some of which have become today's crocodiles, some of which have become today's snakes and lizards, and one of which has evolved into today's mammals that pervade the world.

Dinosaurs are the largest of all terrestrial reptiles and are well suited to living in swampy areas and shallow lakes, where the air is warm and humid and food is easy to find. So dinosaurs ruled the earth for more than 100 million years, but for some reason, they suddenly became extinct in a short period of time 65 million years ago, and all people see today is a large number of dinosaur fossils left behind at that time.

In the event that led to the extinction of the dinosaurs, the animals that went extinct were mainly large reptiles and tall ferns.

After the extinction of the dinosaurs, most of the smaller terrestrial animals such as aquatic animals, arthropods, and small reptiles survived, and birds and mammals developed greatly.

If anyone were asked to name an extinct animal, they would probably be dinosaurs in the first place. There are so many unsolved mysteries about dinosaurs that it is still impossible to explain how these behemoths, which can be as small as one or two meters and as large as tens of meters and weigh several tons, disappeared from the face of the earth. Dinosaurs lived hundreds of millions of years ago --- 65 million years ago and ruled the earth for about 80 million years.

At that time, no species posed a threat to dinosaurs, and the only thing that could destroy them was nature, but it is inexplicable that many of the small creatures of the same era survived.

Cockroaches, commonly known as Xiaoqiang, appeared at the same time as dinosaurs, but their own life ability is relatively strong, and they have lived from now on.

ldquo, three-eyed dinosaur shrimp, rdquo, also known as, ldquo, horseshoe crab, rdquo, this ancient species appeared on the earth at the same time as the dinosaurs, like shrimp and fish, this strange creature that appeared in science fiction films is mostly produced in natural ponds, in the dry season, adults will lose water and die, but their eggs will enter the diapause period, until the next rainy season comes, the original low-lying land has formed a natural pond, and the eggs moistened by the rain will hatch immediately, In a dry environment, the eggs of the three-eyed dinosaur shrimp can still hatch again after 25 years, so the three-eyed dinosaur shrimp escaped the age of dinosaur extinction.

1. Giant panda Giant pandas have lived on the earth for at least 8 million years, and according to legend, Chiyou's mount is a giant panda.

2. Baby fish Baby fish have lived on the earth for 165 million years, and they will not starve to death if they don't eat for a year or two due to their slow metabolic system.

The living environment is not suitable for dinosaurs to survive, and their fertility is very low!! Many of the fossils contain dinosaur eggs without babies in them

Underfed, they eat a lot

The mystery of the extinction of the dinosaurs, why are only the dinosaurs extinct?