The Disappearing Dinosaur 400 words

When I was a child, I was very fond of dinosaurs, bought a lot of dinosaur toys, read many books about dinosaurs, learned some knowledge about dinosaurs, and got to know many representative dinosaurs. For example, the most ferocious dinosaur was Tyrannosaurus rex, the largest dinosaur was Diplodocus, the smallest dinosaur was Eugnathicus, the smartest dinosaur was Odontosaurus, and the dumbest dinosaur was Dromath. I have always been very interested in the life and extinction of dinosaurs, and in the past few days, after reading "Lost Dinosaurs" in the "Alternative New Knowledge" book series of "Terrible Science" series, I have a deeper and more comprehensive understanding of dinosaurs, a prehistoric animal.

In 1822, Geddingmantel, a British doctor who loved to collect fossils, accidentally discovered a strange fossil during his visit, which was the first dinosaur fossil found in the world. The earliest dinosaurs appeared about 100 million years ago, they lived on the earth for about 100 million years, its footprints are all over the seven continents, according to statistics, there are 285 dinosaur genera found at present, 336 species, and then suddenly became extinct 65 million years ago.

In the era of dinosaurs, geography, climate, and plants on the planet were constantly changing, and different dinosaurs were constantly evolving, then extinct and replaced by new species. Evidence of dinosaur behavior is scarce, but a surprising discovery was made in Mongolia in 1971. Paleontologists unearthed the corpses of a velociraptor and a protoceratosaurus, entangled in a gladiatorial fight, killing each other almost simultaneously and being sealed for tens of millions of years in time.

Many paleontologists have spent their lives studying dinosaur fossils and footprints in the hope of finding out what caused the extinction of dinosaurs. But how many species of dinosaurs were there, exactly? Are they warm-blooded or cold-blooded?

How did dinosaurs become extinct? No one can give a definite answer, and it is these questions that keep dinosaur seekers busy and paleontologists crazy.

Students who are interested in dinosaurs can read the book "Vanishing Dinosaurs", become a dinosaur detective, study this "monster" that walks around our planet, has a huge body and a strange appearance, and enters a past.

The book "Dinosaur World Adventures" mainly tells the story of Achu, Cousin Shina, and Shina's father, who encounter a tornado and a strange light at sea, and the hurricane takes them to the ancient age of dinosaurs.

During the age of dinosaurs, they encountered many dinosaurs: Aeolus pterosaurus, Sickle, Thyrosaurus, Velociraptor, Grippylosaurus, and carnivorous dinosaurs. One of the most terrifying is the carnivorous dinosaurs.

But they relied on their wisdom and bravery to defeat the carnivorous dinosaurs and save the day. Eventually, they were met with another hurricane, which swept them back to their hometown.

After reading this book, I admired the three of them very much, because they were not afraid of any difficulties and dangers. When Achu first arrived at the time of dinosaurs, he had a wish, he wanted to be the first person in the world to touch a living dinosaur. When he is faced with a crisis, his thinking and reaction ability are always faster than others, as long as he encounters a carnivorous dinosaur, Achu runs faster than a leopard, and in the blink of an eye, he runs away without a trace.

Dinosaur World Adventures is one of my favorite books in the book, "On the Big Rock." A duel to the death". Because Achu and Shina united and cooperated, they had a fierce battle with the velociraptor Although Achu was even short of the last bamboo spear, but after Shina's reminder, Achu took out the three-section stick and continued to fight with the velociraptor , and finally, they finally beat the velociraptor to it.

Reading this book made me understand that no matter what I do, I must have the spirit of unity and cooperation, and we must persevere and move forward bravely in the face of difficulties in order to overcome difficulties.

The Dinosaur Encyclopedia I read it early and I loved it. One of my favorite dinosaurs is Allosaurus, which has sharp claws, a thick tail that can knock opponents unconscious, and long, powerful hind legs, which are perfect for running. Although Allosaurus is a little less famous than the famous Tyrannosaurus Rex, it has the advantage of hunting opponents more than Tyrannosaurus Rex.

Allosaurus also had more teeth than Tyrannosaurus rex, Tyrannosaurus rex had sixty teeth, but Allosaurus had seventy, each tooth was as sharp as a dagger, and there were serrations on the edges, and if a tooth was missing somewhere, it could grow out immediately, which was creepy. And it was also sent out in groups, attacking together, and almost not a single one of them was a failure. At the time, scientists thought Allosaurus was the world's most lethal carnivorous dinosaur, but the descendant of Allosaurus, the Australopithecus dinosaurus, was even more ferocious than Allosaurus.

I like the second Tyrannosaurus rex, the Tyrannosaurus rex can reach a speed of more than 40 kilometers per hour, can stand up as tall as two buildings, hind legs and muscles are developed, the teeth are the sharpest of the dinosaurs, there are sixty teeth, the longest tooth is eighteen centimeters, can eat a person The body is huge and strong. A perfect dinosaur like this, I believe that no animal can escape his pursuit. But such a Tyrannosaurus rex, which is so feared by any creature, is very terrifying to propose.

If a male Tyrannosaurus rex wants to propose to a female Tyrannosaurus rex, he must bring his own prey, and if the prey does not satisfy the female, the male Tyrannosaurus rex is likely to be a delicious food for the female Tyrannosaurus rex.

This week we learned about the extinction of dinosaurs, and when I read this text, I immediately had a lot of questions and gains in my brain.

My question is too many, why did the dinosaurs become extinct? Why did it grow so big? Is its blood cold or hot?

Carnivorous. If dinosaurs can't find live food, why don't they eat the dead? Aren't there dead animals everywhere when they are on the verge of extinction, and why don't they eat them?

There may be many answers that scientists can't answer, which requires careful observation and a lot of thinking. It's a pity, there will never be a real dinosaur again, if dinosaurs and humans live together in the world, will they become enemies or good friends? If it's a good friend, the whole world will be full of laughter, but if it's an enemy, the world won't be chaotic, it's hard to imagine.

My takeaway was that I didn't know there would be so many claims about dinosaur extinction. Now I know that they may have frozen to death because the weather was getting colder, or they could starve to death because they couldn't find enough food and food.