Do dinosaurs still survive? 15, Do dinosaurs still survive?

It can be said that some dinosaurs survived through evolution. And has survived to this day.

The most typical examples are birds and certain giant lizards. It is generally believed that birds evolved from small dinosaurs, and that giant lizards mostly evolved from crawling dinosaurs with small limbs.

Aren't you already there? (Khan).

It's really not suitable for dinosaurs to survive now, there is not enough food, the temperature is not adaptable, and there is not enough space. Many reasons.

But now there are its offspring, such as birds, lizards, ospreys, etc.

I think the dinosaurs have long since died, and even if there is a surplus, if there is no certain number of populations to reproduce, then it will either die or the quality is not high.

That's all, huh.

The massive dinosaurs are extinct, but there are still evolutionary things that have survived. Such as eckers, lizards, geckos, birds, etc.

The most primitive dinosaurs no longer exist, but the creatures that evolved from them are still widely present in life.

The ancient dinosaurs were extinct, with the exception of some evolved animals.

Modern dinosaurs are all over the streets, dressed in fancy clothes and swaggering around the market :)

The current environmental pollution is not suitable for the survival of dinosaurs. If there is, it is also in the laboratory.

The space is too small, there is no place to put it.

I guess I haven't found it on Earth yet.

You don't know how much you've eaten.

Birds are the table to tell me you haven't eaten chicken.

What a pig, a bird, of course!

Dinosaurs survived for hundreds of millions of years.

The dinosaur family is one of the longest-lived vertebrates. The earliest known fossilized dinosaur bones were found in Argentina, about 100 million years ago. The earliest known fossilized dinosaur footprints were found in some locations in Europe and South America, about 100 million years ago.

Traditionally, all dinosaurs became extinct at the end of the Cretaceous period, about 65 million years ago.

They were no longer found in the fossil record. According to this calculation, dinosaurs in the traditional sense spent about 100 million years on the earth. Since birds originated from dinosaurs and belong to a branch of the dinosaur family, dinosaurs in the modern sense include birds.

In this way, the dinosaur family has lived on the earth for about 100 million years.

The story of the dinosaurs

During the long age of dinosaurs, there were various kinds of dinosaurs. The dinosaur species of each era are different and have a strong imprint of the times. The Triassic was an early stage in the evolution of dinosaurs, with the emergence of major clades of dinosaurs including sauropods, theropods, and ornithischians, with the most famous representatives including Plateosaurus, which belonged to the protosauropods.

Ancient Brontosaurus belonging to the sauropods, Coelostosaurus belonging to theropods, and Pisanosaurus belonging to the ornithischian hips. The dinosaurs of this period were dominated by protosauropods and theropods, and less sauropods and ornithischians. Dinosaurs in the Triassic period were generally relatively small in size and mostly walked on two legs.

The earth has a history of 4.6 billion years since its birth, and in such a long time, the earth has experienced a total of five mass extinctions, the last of which was the mass extinction of dinosaurs that occurred 65 million years ago.

Speaking of dinosaurs, I believe many people know that this is a huge creature that lived in the Cretaceous era 65 million years ago, and was the overlord of the earth at that time. The history of dinosaurs is very long, they have lived on the earth for about 100 million years, far surpassing most of the earth's creatures.

Reason 1, dinosaurs are cold-blooded animals, the biggest disadvantage of cold-blooded animals is that once the weather becomes cold, it will be inconvenient to move, and then it will become a dish of hot-blooded animals, which is why crocodiles only survive in Africa.

Reason 2, why did only crocodiles survive, but other land dinosaurs perished? The reason is also very simple, crocodiles are in the water, the water is more suitable for cold-blooded animals to survive, the feathers and fur of hot-blooded animals do not work at all in the water, only a few hot-blooded animals have the ability to survive in the water, but for the relatively warm water in Africa, the crocodile's mobility is not weak. But how many dinosaurs don't have this ability, reason 3 As soon as the weather gets cold, small dinosaurs can also dig a hole to hibernate, so lizards like lizards that can dig holes to hibernate also survived, but large dinosaurs can't, hibernate in the open air, and can't sleep before falling asleep.

Therefore, the extinction of the dinosaurs is inevitable.

For animals like dinosaurs, which lived hundreds of millions of years ago, the challenging question is: How long did they really live? If you look at different popular science articles, you will get different answers.

In the case of giant sauropod dinosaurs, some believe that they lived only a few decades, but others believe that they lived to be hundreds of years old. The main reason for such a large gap is that the lifespan of dinosaurs is not only related to their size, but also to their metabolic rate. For example, if a dinosaur was an ectothermic like a bird, it would have a shorter lifespan; Conversely, if the dinosaur was more like ectotherms such as crocodiles, it could live longer.

The method of estimating the lifespan of dinosaurs based on the size of the body and the level of metabolic rate is very crude and imprecise, because the comparison data of this method are living animals that are significantly different from dinosaurs. So, is there a more precise way to estimate the lifespan of a dinosaur? By studying the microstructure of dinosaur bones, scientists have found a relatively reliable way to estimate the lifespan of dinosaurs.

Scientists have discovered that the cross-section of dinosaur bones has structures like tree rings. Calculating the number of such structures makes it possible to estimate the age at which the dinosaurs died. At the same time, by observing the microstructure of dinosaur bones, it is also possible to determine whether the subject died in infancy, youth, or old age.

Combined with this information, it is possible to roughly determine the lifespan of a certain dinosaur. In general, sauropods were able to live up to 40 to 60 years old, perhaps longer; Large theropod dinosaurs, like the famous Tyrannosaurus rex, lived to be about 25 years old; Small theropod dinosaurs, like Microraptors, lived only 3 to 4 years; Psittacosaurus, which is also a small dinosaur, could live longer than 10 years, perhaps reflecting the different levels of metabolism between ceratosaurs and small theropods.

Ref: 100000Whys Konglonghuo

The only surviving dinosaur in the world is the Congolese dinosaur, also known as Mokram Bianbe. Legend has it that it is a huge mysterious creature that inhabits Lake Taylor in Africa, and the Congo dinosaur is described as an animal with a long neck and tail that is characteristic of sauropod dinosaurs, and most of the locals describe the Congo dinosaur as a herbivorous creature, so it is less aggressive and mysterious.

Information on the world's only surviving dinosaursLegend has it that the Congolese dinosaur had a snake-shaped head and neck, and its nostrils were also breathing, but it was much larger than the snake, and its length was about 5 to 10 meters, of which the length of the neck was between meters, and the length of the tail was between meters.

The Congolese dinosaur Mokrambian Be, the world's only surviving dinosaur Mokram Beenbe, inhabits Taylor Lake is located on the border between the Congo and the Democratic Republic of the Congo, surrounded by dense primeval forests and large swamps, known as the Gates of Hell, so it itself seems very mysterious, and there are many mysterious unknown creatures in the vicinity.

During the 160 million years that dinosaurs ruled the world, the earth's climate has been relatively stable, when the climate was warm, rainy, overgrown, with lush gymnosperms and abundant water trembling algae, and there was no strong crustal movement.

The higher levels indicate that the dinosaurs were well adapted to the atmosphere with high carbon dioxide concentrations, but later, in the Cretaceous.

At the end, the atmospheric environment has undergone great changes, the content of carbon dioxide has decreased, and the content of oxygen has increased, which may be reflected in two aspects: 1. The body of the dinosaur has become unwell, and in the new environment, it is easy to get sick, and the disease will spread like a plague 2. The new atmospheric environment is more suitable for mammals.

mammals became more advanced and adaptable competitors Under the influence of these two factors, the dinosaurs eventually became extinct