Some dinosaurs had huge bodies, such as Lei Long. During the Jurassic period, the climate on the earth was warm and humid, and there were lush forests everywhere. Because of these rich plant foods, herbivorous dinosaurs flourished. After that, Lei Long was also active in the North American Plain.

Lei Long weighs about 35 to 50 metric tons and has thick legs like a trunk. Long neck, standing as high as seven stories, can be said to be the largest animal in the world. Although Lei Long's body is surprisingly large, her temperament is very gentle. She usually feeds on plants in temperate forests and sometimes walks into swamps. Because of the buoyancy of water, she can reduce the heavy burden on her body and avoid the attack of fierce carnivorous dinosaurs like Allosaurus.

(2) three dragons:

Bone plates and fragments of Stegosaurus and Ceratosaurus can only be passively defended and cannot fight back. It was not until the Rocker Dragon appeared that the situation gradually changed. Lei Long is the largest of all sauropods. It has two spear-shaped horns on its head, and the other horn protrudes between its eyes and nostrils. Such a sharp weapon, even the most terrible carnivorous dinosaur will give it three points.

(3) Stegosaurus:

Stegosaurus appeared10.5 billion years ago, characterized by two ribs on its back and spikes on its tail. Stegosaurus was a herbivorous dinosaur and moved slowly. Its bone plate and spikes on its tail became the best weapon against carnivorous dinosaurs.

(4) Ankylosaurus:

Stegosaurus was protected by a bone plate, but it was still fragile where the bone plate could not cover it. When stegosaurus gradually disappeared, Ankylosaurus (armadillos) covered with bone plates took its place. Ankylosaurus is like an invincible tank car, even Tyrannosaurus Rex can't help it.

(5) Tyrannosaurus Rex:

Tyrannosaurus Rex is the largest and most ferocious carnivorous dinosaur. Tyrannosaurus rex appeared at the end of the dinosaur era, about 80 million years ago. Tyrannosaurus rex's body is 14 meters high and weighs about 10 metric ton. Its hind feet are thick and strong, and can even support a rhinoceros.

From the fossils of Tyrannosaurus Rex, it is found that every tooth is as big as an adult's palm, and even its eyes are bigger than a human head. Although most of the body is surprisingly large, the forelimbs of Tyrannosaurus rex are so small and short that it is impossible to send food into its mouth. The killer dragon has the same habit as Tyrannosaurus Rex, and it is a fierce animal.

[6] duck crown dragon:

Like Tyrannosaurus rex, the duck-crowned dragon appeared at the end of the dinosaur era. The most special thing about the duck-crowned dragon is its head. Its flat and long jawbone looks like a duck's mouth, so it has the name of duck-crowned dragon. In the past, people thought that the life of the duck-crowned dragon was similar to that of a duck. It swims in the water and feeds on plants in the water. Later, when scientists studied the fossils of the duck-crested dragon, they found that they did not eat aquatic plants for a living, but lived in trees on the shore, and the goose-crested dragon had the same habit.