Dinosaurs (2)

Do you know what a dinosaur is? Dinosaurs are a group of animals that lived about 235 million to 65 million years ago and can support the body to walk upright, supporting the global terrestrial ecosystem for more than 160 million years. Most dinosaurs have become extinct, but the offspring of dinosaurs - birds have survived and have proliferated to this day.

The Edmonton Ankylosaurus is one of the dragons. Here's an introduction to it: Edmonton Ankylosaurus is covered with a heavy nail and block deck to protect itself. On its head there are also bone plates that are joined together like a jigsaw puzzle to protect the triangular head. In addition to this thick heavy armor, Edmonton Ankylosaurus has another way to protect itself. On either side of the body, there is a row of very sharp bone thorns that have a thorny edge that extends to the sides. When it is attacked, it will probably lie on the ground to protect its soft belly without a deck.

Pterosaur, a dinosaur that dominates the sky. It is one of my favorite dinosaurs. Description: The pterosaur, the Greek meaning "winged lizard", is the evolutionary branch of flying reptiles. They survived in the late Triassic to the end of the Cretaceous, about 228 million years ago and 65 million years ago. The pterosaurs are the first flying vertebrates. Their wings are made up of skin, muscles, and other soft tissues that stretch from the chest to the extremely long fourth finger. Earlier species have long, tooth-filled ankles and long tails; later species have sharply shortened tails and lack of teeth. The pterosaurs have very large differences, ranging from small forest pterosaurs to the largest creatures that have appeared on Earth, such as the Fengshen pterosaur and the Hartitz pterosaur.

Below is the giant tooth dragon. The giant tooth dragon was the earliest discovered dinosaur, but the period of life was in the Jurassic period. As early as 1677, an English priest described its sporadic bones. Unfortunately, the priest did not know which animal had such a large bone, and described it as the remains of the "giant." It was not until 1823 that the jaw bones and teeth of the same animal were discovered. It was scientifically described by the British geological paleontologist William Buckland and named "Giant Dragon".

Finally, the sword horned dragon. Introduction: Although it is not big, Jianjiaolong is not a good guy. This two-legged herbivore comes from an unusual family of dinosaurs: the common feature of the swollen head family is that they have a thick, round cranium. It is semi-circular and consists of many small bones that cover its eyes and back neck. This skull was not very thick when the Swordhorn Dragon was born. As the dragon grows, it grows thicker and thicker. Some experts believe that they have found the skull of the male sword horned dragon and the fossil of the female dragon. They found that some of the horned dragon's skulls are thicker than others, and these thicker bones may be from the horned horned dragon. The skull of a male sword horned dragon can reach 6 cm - the top half of the brick. The sword-horned dragon is five times thicker than the human skull and is a powerful weapon against fierce enemies. The appearance of a sword-horned dragon in self-defense is really scary! Most attackers can't afford such a fierce collision. They are not broken ribs or broken legs.

The introduction is over. Goodbye.

Lupu Middle School first day: QQ379