Dinosaur explanatory text

Everyone often sees compositions, especially expository essays that cannot be ignored in compositions. Expository essays are required to truthfully reflect objective things, grasp the characteristics, essence and laws of things, and give readers a correct understanding. . How should we write this type of composition? The following are explanatory texts on dinosaurs that I have collected for everyone. They are for reference only. You are welcome to read them. Dinosaur Explanatory Essay 1

Now the overlord of the world is human beings, but 65 million years ago, before humans were born, there was already a behemoth that ruled the earth for more than 100 million years, and that was the dinosaur.

Dinosaurs are roughly divided into two categories: sauropods and theropods. Sauropods are herbivorous dinosaurs. They are generally large in size and have ways of self-defense. Many of the herbivorous dinosaurs have created miracles in the world, such as "The largest individual of Amphoraeus Fragile is 60 to 80 meters long and weighs 220 tons, about The size of two blue whales, let’s introduce the theropod dinosaurs, the “dead rivals” of sauropods. Theropod dinosaurs are mostly carnivorous, with ferocious and cruel temperaments. Some act alone, and some fight in groups. < /p>

Having said so much, what do dinosaurs look like? There seems to be no answer to this question yet, so some people will protest. So what the dinosaurs in the movie look like are what the dinosaurs in the past looked like. , right? Sorry, in the movie only the bones and skin were restored, not the soft tissues, so why not restore them? Because tens of millions of years have passed, the soft tissues of the dinosaurs have long disappeared, so I personally guess the appearance of the dinosaurs, plus The feathers, fat and other soft tissues may resemble a fleshy macaw.

Why did dinosaurs suddenly disappear when they were so powerful on the earth? There are currently two reliable theories. , one is that climate change caused the extinction of dinosaurs, and the other is that meteorite impact caused dinosaurs to become extinct. The meteorite impact hypothesis is already very clear to everyone. Of course, this is also the most reliable hypothesis, so I plan to talk about climate change in detail. , Dinosaurs have survived on the earth for more than 100 million years, and have long been adapted to the atmosphere with extremely high carbon dioxide content in the Mesozoic Era. However, the carbon dioxide content in the atmosphere suddenly decreased 65 million years ago, causing the dinosaurs to show various symptoms of maladaptation. In the end, the meteorite "inserted a knife" into the dinosaurs, causing them to become extinct.

I think that when one species becomes extinct, another species is born, this is the principle of natural balance! Dinosaur explanatory text 2

The largest dinosaur I have seen on TV is Seismosaurus. It is a herbivorous dinosaur. Its length is 39 to 52 meters! It can reach 18 meters in height! It weighs 130 tons!!! That is It is said that 2 to 3 seismic dragons standing together head to tail can line up from one gate of the football field to another. If such a heavy behemoth walks on the field, its huge feet will move every time. Stepping on the ground will make the earth tremble, like an earthquake. This is the name of "tremosaurus". They like to live in groups and have long necks so they can eat leaves on trees. Recently. The most important thing is that the dinosaurs could not adapt to the changes in the environment (climate) at that time, so they perished. Dinosaur Explanation 3

After a moment of dizziness, I woke up and saw green grass and waterfalls all over the mountains. , clap your hands and play with stones. The sky is like a sapphire with a few white clouds.

A roar woke me up when I entered the tunnel through time. Passed here, but where did the robot cat go? A series of questions flashed through my mind. A tyrannosaurus appeared in front of me, with a robot cat on its back! Landing right on the back of the Tyrannosaurus Rex. The Tyrannosaurus seemed frightened, turned around, showed a ferocious expression, and stared at me maliciously. I was shocked at first, holding Doraemon and falling off the back of Tyrannosaurus Rex. Seeing the roar of Tyrannosaurus rex, I suddenly had an idea: Run!

While running, I thought: This should be the age of dinosaurs. Running like this is not an option. Yes! I took out a big net from my backpack, threw it back, and put the T. rex into the net. At this time, a large group of pterosaurs flew over my head. Doraemon was woken up by them and said: "Oh, don't bother me!" I woke him up and said anxiously: Something happened, go and have a look!

After a while, the earthquake started, and I saw some dinosaur corpses rotting in front, with bones exposed in many places. Very scary, very scary.

I thought to myself: The climate here is not right, why is the sky gloomy? The ground is also very wet. Was it when the dinosaurs became extinct? It seems to be the late Cretaceous period. I took out my notebook, recorded this frightening picture, and secretly speculated on the reasons for the extinction of the dinosaurs.

It’s drizzling, and it’s a little difficult to breathe. Fortunately, I had an oxygen bottle before. After spraying a few times, I said to Doraemon: "What time is it?" Doraemon said fearfully: "It's eight o'clock in the morning, but why do you ask? I'm going to die!"

Overlord The dragon also fell behind with a loud bang. I sprayed it with oxygen several times and it opened its eyes again. But the body is still unable to move, so it can be concluded that the dinosaurs became extinct because the climate was changing rapidly and the dinosaurs were unable to adapt to the new environment.

The world is silent...

I threw down my backpack, returned to modern times, told the world the records in my notebook, and finally solved a million-year-old mystery.

Comment: The article material is novel and the concept is clever. The appearance of Doraemon and the lively language reveal the author's innocent and lovely childlike interest. The use of excellent words and good sentences makes the article read beautifully and vividly, making it a successful masterpiece. I look forward to the weird things you bring next time, come on! Explanatory Essay on Dinosaurs 4

Students, you must like dinosaurs! So do you know what the largest dinosaur is? By the way, that's "Spinosaurus".

I like many dinosaurs, including Spinosaurus, which belongs to the family Spinosauridae. The skull of Spinosaurus can reach 2.15 meters in length, making it the largest skull among carnivorous dinosaurs. Spinosaurus had small protrusions in front of its eyes, which may have served as eye protection or visual display. The snout of Spinosaurus was long and narrow, with a slightly enlarged front end. It was very similar to a crocodile. The teeth were long and curved. The length of the teeth at the end of the snout could reach 15 cm. The neck was very flexible, which made it easier for them to lower their heads and pounce on fish. It is much larger than Tyrannosaurus rex and Giganotosaurus. It is 12-19 meters long and weighs 6-20 tons. It is the largest carnivore known on land so far.

Spinosaurus mainly walked with its hind feet on the ground. Its forelimbs had sharp claws. Although they were strong and powerful, they could not walk. They would sometimes crouch and rest with the sides of their forepaws touching the ground. The front claws and hind claws complement each other and use its strengths to avoid weaknesses, making it agile and capable of quickly subduing prey.

There is a huge sail-like object on the back of Spinosaurus, about two meters high, supported by spines inside, which makes Spinosaurus look burly. The sail has many functions. It can threaten other predators and attract the attention of the opposite sex. The spinosaur's sail not only stored a large amount of nutrients, but may also have a role in regulating body temperature.

Spinosaurus mainly lives in hot swamp areas or near rivers and lakes, and mainly feeds on fish. Fish, turtles, birds and other animals are the favorite foods of Spinosaurus, and sometimes they also prey on small animals on land.

After listening to my introduction, do you have a certain understanding of Spinosaurus and like it? Dinosaur Explanatory Essay 5

Dinosaurs are huge creatures. They are divided into herbivorous dinosaurs and carnivorous dinosaurs. Let us get to know them together!

Let’s talk about herbivorous dinosaurs first. As the name suggests, they feed on plants. Some herbivorous dinosaurs were very huge. One plant-eating dinosaur was called Brachiosaurus. They were about 26 meters long and weighed 35 tons, which is equivalent to the weight of ten elephants. There are also some extremely small herbivorous dinosaurs, such as Xiaolong, which is only over one meter tall and runs on two legs. There are also some herbivorous dinosaurs with tough leather armor, bone plates or bone nails, which can make natural enemies unable to attack, and some have powerful tails for counterattack.

Let’s talk about carnivorous dinosaurs. They feed on other dinosaurs. Large carnivorous dinosaurs mainly capture large vegetarian dinosaurs. There is a kind of Tyrannosaurus rex, which is about 30 meters long and weighs about 14.85 tons. , the lightest one is more than 8 tons. Its forelimbs are very small compared to its hind limbs, and its teeth are as sharp as sabers. There were also smaller carnivorous dinosaurs, such as Compsognathus, which was only over one meter tall and weighed about 3 kilograms.

Finally, let’s talk about the extinction of the dinosaurs. Why the dinosaurs became extinct is still a mystery. Scientists have given a variety of hypotheses.

Small meteorite impact theory: About 65 million years ago, an asteroid with a diameter of about ten kilometers hit the earth, causing the extinction of a large number of animals, including dinosaurs. There is also a volcanic eruption hypothesis, which believes that there were severe volcanic eruptions at that time, which caused a large amount of sulfur to enter the air, warm the global climate, cause ocean acidification, and eventually lead to the extinction of the dinosaurs. There are many hypotheses like this.

There are still many questions about dinosaurs that have not yet been solved, and there are still many unsolved mysteries. Let us work hard to learn knowledge and explore this ancient mystery when we grow up... Dinosaur Explanatory Essay 6

One hundred and forty million years ago, a group of powerful behemoths—dinosaurs—appeared on the earth we live on. They have different shapes and temperaments. These big guys once dominated the earth.

But in the late Cretaceous period 65 million years ago, they suffered a huge disaster!

One day, a planet suddenly hit the earth. Suddenly, the mountains collapsed and the ground cracked, and dust flew up. The earth was shaken by the impact. The mountain collapsed, and all the dinosaurs on the mountain and at the foot of the mountain were buried in the chaotic lime soil. The cry of grief echoed in the chaos.

The trees were also broken, and towering trees were spread out on the ground. The sound of falling trees and the roar of dragons were mixed together.

River water, lake water, and sea water were hit and sprayed out in random directions. A wave can be tens to hundreds of meters high. The dinosaurs screamed and ran away, but to no avail. They were eventually carried away by the tide. They were lifted into the water, but they were still struggling. But it was all in vain, as a wave swept the huge creature into the air, and then fell down alive. As a result, they could only rise and sink on the blood-stained water - they were powerless to resist!

The shaking of the earth slowly stopped.

——But the dinosaurs have already died all over the mountains and seas.

The pterosaurs were hovering in the sky, making miserable cries as if they were mourning the dead. Tyrannosaurus rex, Stegosaurus, Mamenchisaurus... all slowly calmed down and stopped running around. Immediately, they made a deafening cry at the same time - it was desolate! It's confusion! It's fear...

However, God does not want them to live.

Due to the violent impact, the dust on the earth was shaken up, and the air was already filled with large and small dust.

Since then, the earth has ushered in three months of long night.

Without sunlight, plants on the earth will gradually wither because they cannot continue to carry out photosynthesis. Many herbivorous dinosaurs died one after another without food. Their death reduced the food for carnivorous dinosaurs and aggravated the demise of 5 dinosaurs.

Due to the demise of plants, oxygen on the earth is becoming increasingly scarce, and it is becoming more and more difficult for dinosaurs to breathe day by day.

In the end, all the dinosaurs died in just two months. Of course, the dinosaur eggs left behind cannot be hatched.

Since then, the huge family of dinosaurs that dominated the earth has disappeared from the earth forever.

More than three months later, the first ray of sunlight shone on the earth. When the light returned, the earth was full of dead bodies. Explanatory Essay on Dinosaurs 7

Dinosaurs are one of the beasts that attract my most attention and love. Dinosaurs looked very powerful and were once the largest animals on earth.

Dinosaurs are divided into two categories: carnivorous and herbivorous. Carnivorous dinosaurs had extremely sharp teeth that allowed them to kill prey quickly. Herbivorous dinosaurs ate grass, leaves, etc. and did not need sharp fangs. Therefore, the food chain of dinosaurs is generally carnivorous and herbivorous.

Among so many species, my favorite is Tyrannosaurus rex. Its body length can reach 13.7 meters, its weight is about 7-8 tons, and its hip height is nearly 5.2 meters. The Tyrannosaurus rex's bloody mouth is about 1.3 meters wide when opened, and has 60 teeth, each of which is 30 centimeters long. They cross each other like daggers and can bite through the bones of prey.

The body and hind limbs of Tyrannosaurus rex are very strong, and the strong hind limbs can kick prey to death. However, its forelimbs have degenerated, leaving only 1 meter. People speculate that it sacrifices the weight of its forelimbs to support its larger mouth and head to maintain body balance. Tyrannosaurus rex had the habit of catching prey in groups. They first surrounded the prey, then pounced on it, biting the prey's skin with their sharp dagger-like teeth.

After biting it to death, and then sharing the prey together, a living giant Diplodocus soon had only a white skeleton left.

About a few million years later, a meteorite suddenly rushed towards the earth from space and hit it heavily. The earth was soon surrounded by orange-red fires and mushroom clouds. On land, the dinosaurs fled in a hurry, but they were buried by large rocks and sand from nowhere, drowned and burned by floods and fires... The dinosaurs became extinct.

However, the above reason is just a guess. The real reason for the extinction of the dinosaurs has not yet been completely solved. I hope people can overcome this unsolved mystery as soon as possible. Explanatory Essay on Dinosaurs 8

On Friday, Professor Li from the Chinese Academy of Sciences explained a lot about dinosaurs to us. If you also want to know something about dinosaurs, you might as well read my article below first!

When talking about dinosaurs, we have to start with dinosaur eggs! In China, more than 20,000 dinosaur egg fossils have been discovered in Henan alone. In our hometown, Dongyang, Zhejiang, there are also many dinosaur egg fossils, about 15,000 of them. Because many of the birthplaces of dinosaur fossils in Zhejiang are near Dongyang, Dongyang is also known as the "Hometown of Dinosaurs." There are so many dinosaur egg fossils unearthed in our country that the country even applied for Guinness records!

Not only are there many types of dinosaurs, but their body shapes also vary greatly. Do you know what the largest dinosaur is? Some people will say Seismosaurus, some people will say Argentinosaurus, and some people will say Fragile Amphelosaurus? Actually none of them! According to our Professor Li's investigation, the largest dinosaur fossil we have discovered so far is the giant Ruyangosaurus, which was a full 38 meters long! As for the fragile double-chambered dragon, it was because the printing quality in the past was not high and some link was wrong, so it turned into a huge dragon with a length of 60-80 meters. So, do you know what the smallest dinosaur is called? Haha, it’s the rat dragon. Its body is only 10 to 20 centimeters long, which is really about the same size as a small mouse. No wonder it is called "rat dragon". The big one is 38 meters long and the small one is only 10 centimeters. The size difference between the dinosaurs is really huge!

Since there were so many dinosaurs and they were so big, why did they become extinct later? Professor Li told us a very funny reasoning: It is said that dinosaurs’ teeth were barb-shaped and could not chew food, so they had to use gastroliths instead. However, the chewing effect of gastrolith replacement is not good, so dinosaurs often have bloated stomachs and indigestion. After indigestion, you have to fart, so many dinosaurs will fart a lot. And fart! In fact, a large amount of toxins are released into the air, destroying the ozone layer that can block cosmic rays. Then, the cosmic rays killed the plants and the fresh water dried up, so the dinosaurs' food chain was broken and the dinosaurs could not survive. Another reasoning is: At that time, volcanic eruptions were more frequent, and a lot of dust rose into the sky, turning the entire earth red, blocking the sun's rays, causing the death of plants, and the surface temperature also dropped rapidly, so the dinosaurs were He died of hunger and cold. Of course, there are many other theories, such as Mars hitting the earth, dinosaurs stealing each other's eggs... Hey, why these dinosaurs became extinct is actually still a mystery. Dinosaur Explanatory Essay 9

Dinosaurs are the largest animals in the world. They appeared about 210 million years ago and then miraculously became extinct. Everything we know about dinosaurs today comes from dinosaur fossils.

There are many kinds of dinosaurs. Based on the shape of their bone fossils, they can be divided into birds and dragons. Based on their tooth fossils, they can also be divided into carnivores and herbivores. Not only are there many types of dinosaurs, but their shapes can be found all over the world. Some of them fly in the sky, some swim in the water, and some crawl on the land. A large one can be as big as dozens of elephants; small, but similar to a chicken.

The largest dinosaur we have discovered so far is Seismosaurus, which was 39 to 52 meters long! Height can reach 18 meters! ! The weight reaches 130 tons! ! ! If such a monster walks on Yuan Ye, every time its huge feet step on the ground, it will make the earth tremble, like an earthquake, so it is called "Zhenlong".

Dinosaurs ruled the earth for a long time until they suddenly became extinct 65 million years ago. Scientists have endlessly debated the reasons for the extinction of the dinosaurs. There are two main views: one is the "small celestial body impact theory".

A meteorite hit the earth 65 million years ago, causing a volcanic eruption. The earth's climate changed dramatically, and eventually the dinosaurs on the earth became extinct; the other is the "volcanic eruption theory", that is, volcanic eruptions, lava eruptions, and subsequent It was the advent of the world of ice and snow that led to the extinction of the dinosaurs.

As for the real reason for the extinction of the dinosaurs, the answer has not yet been found. This will be a mystery in the hearts of mankind. Let's discover the secrets of science! Let’s talk about this secret later! Dinosaur Explanatory Text 10

Whenever I see the "Children's Dinosaur Encyclopedia", I can't help but turn it over and read it, and I never tire of it. That's because the dinosaur's huge body, sharp teeth or muscular body attracted my eyes.

Dinosaurs are giant animals that lived more than 60,000 years ago and ruled the earth for more than 100 million years. Their bodies were very huge, reaching a height of 20 to 23 meters. Some dinosaurs had very small forelimbs. , so they can only walk standing up, such as Velociraptor; while some dinosaurs have longer forelimbs, so they can walk on all fours.

Some dinosaurs are very docile and will take care of their babies wholeheartedly. There are also some dinosaurs eating leaves freely under the trees. They are usually vegetarian dinosaurs. As long as they are not disturbed, they will not get angry. However, those brutal carnivorous dinosaurs are not so easy to talk to. When they see other animals, they will pounce on them mercilessly, then open their bloody mouths and tear the other animals' flesh into pieces.

Dinosaurs are divided into two categories, one is carnivorous dinosaurs and the other is herbivorous dinosaurs. The most representative carnivore is the Tyrannosaurus rex. They are approximately 15 to 18 meters tall. When they attack each other, they use their long teeth or sharp claws to hurt each other. They would also feed on stragglers and, when they were very hungry, the carrion of other dinosaurs.

Herbivorous dinosaurs generally only eat leaves of plants. If they encounter a tree that is too tall, they will extend their forelimbs to the crown of the tree to form a standing position, and then extend their heads up to eat the leaves. They can run very fast Not fast at all, unable to evade predators in time.

Now that dinosaurs are completely extinct, archaeologists have discovered many dinosaur fossils. According to the book, a very large Tyrannosaurus rex skeleton was found in Europe. What would the world be like if dinosaurs still existed? Dinosaur Explanatory Essay 11

I want to design a dinosaur festival because dinosaurs are extinct. So I wanted to design a dinosaur festival. On Dinosaur Day, there will be many people selling dinosaur clothes. There are herbivorous dinosaur suits, carnivorous dinosaur suits, and omnivorous dinosaur suits. You can make it yourself at home, no need to buy it outside. The price of a dinosaur suit should not exceed 100 yuan.

Once you have the clothes, you can play with them. At that time, carnivorous dinosaurs chased herbivorous dinosaurs, and omnivorous dinosaurs stole eggs. When the carnivorous dinosaurs defeated the herbivorous dinosaurs, the herbivorous dinosaurs could be said to be defeated. Herbivorous dinosaurs should wear a scarf with the word "defeated" written on it. If an omnivorous dinosaur is caught stealing eggs, wear a scarf too. It says "Captured." Have carnivorous dinosaurs proved a failure? Pushed to the cliff by a herbivorous dinosaur.

I want to design this holiday to July 11, because my parents will give me 110 yuan on that day. I'll use these to buy meat-eating dinosaur suits. Because I like carnivorous dinosaurs with big mouths and sharp teeth, and they look down on majesty. Until then, you can have fun with your family. Dinosaur Explanatory Essay 12

Through calculations, scientists have described for us the heroic scene 65 million years ago.

One day, the dinosaurs were eating and drinking carefree in the Earth Paradise. Suddenly, a dazzling white light appeared in the sky, and a boulder with a diameter of 10 kilometers, equivalent to the size of a medium-sized city, fell from the sky. It was an asteroid. It crashed into the sea at a speed of 40 kilometers per second, creating a huge crater on the sea floor. The seawater was quickly vaporized, and the steam was sprayed tens of thousands of meters into the sky. Then it set off a tsunami as high as 5 kilometers and spread at an extremely fast speed. The sky-high water swept everything on the land, and the raging huge waves swept across the earth's surface and converged on the far side of the impact point. There, the huge force of seawater triggered strong volcanic eruptions on the Deccan Plateau, and at the same time changed the direction of movement of the earth's plates.

What a terrible disaster that was! Meteorites hit the earth and produced overwhelming volcanic ash. The polar ice and snow melted, plants were destroyed, and volcanic ash filled the entire sky.

For a time, there was darkness, the temperature dropped sharply, heavy rain fell, flash floods broke out, and mudslides swept away the dinosaurs and buried them. In the months and years that followed, the sky was still filled with dust and dark clouds. The earth entered a low temperature due to the absence of sunlight all year round, and the vast land fell silent for a while. An Era in the History of Biology Dinosaur Explanatory Essay 13

October 1, 20xx is my birthday. I went to see "Nobita" at an arthouse cinema. It was the first Doraemon story to be adapted into a theatrical version. It caused a great sensation in Japan and was deeply loved by domestic children.

This is a story about the love and friendship between Doraemon and its friends. One day, the little husband known as "Tyrannosaurus Rex" showed his dinosaur fossils in front of his companions, but did not let Nobita see it. Nobita said angrily: "One day, I will find dinosaur fossils, otherwise I will eat noodles with my nose!" He soon realized the seriousness of the matter, and in order to fulfill his promise, he had to take the risk to find dinosaur fossils. After long and arduous efforts, one day, Nobita finally found the dinosaur fossil he had dreamed of. Nobita racked his brains and tried every means to hatch a cute little dinosaur named Pipi. The baby dinosaur grew up quietly, and its huge body could not be accommodated at home or in the zoo, so it had to be sent back to the Cretaceous period 100 million years ago. Unexpectedly, a dinosaur hunter wearing a black mask robbed Pippi. Nobita, Fu Xiao and Doraemon had a dream. They tried every means to fight the enemy to rescue Pippi.

This movie is full of jokes. Doraemon is a funny and humorous robot cat. In this film, Doraemon recognizes a kind of "gentle eyes" with big bell-like eyes, and silently waits beside Nobita, supporting him to hatch dinosaur eggs. It is not until midnight that Nobita is revealed by the "gentle eyes" "Shocked. Also, when meeting the Tyrannosaurus Rex in the Cretaceous, Doraemon discovered the "Momo Tarot Card - Taming the Meatballs", which immediately changed the Tyrannosaurus Rex from fierce to innocent, silly, and delicate. His expression attracted laughter from the audience.

This film uses anthropomorphic techniques to vividly describe the sincere friendship between Pippi and Nobita, which is really touching. More than once, I was moved to tears by the scenes in the film. Especially at the end of the film, when Pippi wanted to separate from Nobita, Pippi swam to his partner, and Nobita said to Pippi's happy back with tears in his eyes: "Me too...I too...I will be in my own Come on, world!" Then he ran in the opposite direction and said, "Don't come here! Come here and I'll beat you!" At this time, I just heard a whimper and I couldn't help crying. I understand that only when people and animals live in harmony and treat each other sincerely can our world be a better place. After all we only have one earth.

When I walked out of the cinema, wonderful scenes kept popping up in my mind. Nobita is truly an unforgettable movie. Dinosaur Explanatory Essay 14

A long time ago, on a huge island, there lived many dinosaurs. There are huge green stones on the island, dense forests, and clear rivers flowing happily. The little dinosaurs Carlo and Keli are good friends. They have a lot of fun playing water fights, throwing stones, racing and playing hide-and-seek together every day.

One day, Carlo and Cory went to play hide-and-seek. Cory accidentally fell into a deep cave and was treated as delicious food by the poisonous scorpions, poisonous spiders and poisonous snakes in the cave. Carlo was devastated because he had lost a good friend.

One day not long after, the green-glowing boulder suddenly exploded, and the huge shock wave turned the trees on the entire island into a sea of ??fire. Carlo ran away in panic, but there were flames everywhere, so he had to hide in a cave. After an unknown period of time, Carlo walked out of the cave. The outside turned into ruins. All the dinosaurs were dead, leaving only Carlo living alone. I don’t know how much time passed, but white snowflakes began to float in the sky. Carlo slowly died because he had no food.

The dinosaurs are extinct, the age of dinosaurs is over, and a new era has arrived. Dinosaur Explanatory Essay 15

Dinosaurs suddenly disappeared at the end of the Cretaceous period 65 million years ago, becoming a mystery in the history of earth's biotechnology that no one can solve yet. The earth's past creatures are even recorded in fossils.

There are many types of dinosaurs, such as the ferocious Tyrannosaurus Rex.

Tyrannosaurus rex had strong and long teeth, but its hands were only 30 to 40 centimeters. There is also the largest form of the Fragile Amphora. Fragile Amphora, which can exceed 50 meters. The smallest bird, the hummingbird, is less than ten centimeters. In terms of eating habits, there are docile herbivores and ferocious carnivores. Tianfu Emei Dragon is about 20 meters long. He lived in Sichuan 165 million years ago. Li's Shulong is 9.3 meters tall and wears green armor. Baigong Yongchuan Dragon is 8 meters tall. Lowe's Spirit Dragon 1.2 meters. The types of dinosaurs are truly endless.

In the Mesozoic strata, many dragon fossils have been found, but no non-ornithosaur fossils can be seen. From this, it can be inferred that dinosaurs are the ancestors of birds, so birds are dinosaurs.

Physically, even the smallest lizard dinosaur was larger than any other animal in the cozy age of dinosaurs.

At 80 million years ago. There are docile herbivores and ferocious carnivores as well as hybrid dinosaurs. All told, dinosaurs ruled the Earth for about 80 million years.