Dinosaurs (Latin: Dinosauria) are animals that have dominated the world life around 150 million years. The dinosaur is a combination of two words in Greek which means terrible lizards. The reason for this is that in the past, the dinosaurs of scientists have thought of a genus of lizards. Common in Turkish; but it is wrong to call dinosaur. Dinosaurs first appeared on earth 230-225 million years ago. 65 million years ago, many species of dinosaurs were extinct. Some types of dinosaurs are warm and some are cold-blooded.

We can explain the reasons why dinosaurs live up to 150 million years:

They adapted to the environment.
They were protected and dry thanks to their hairy and waterproof skin.
Thanks to their hard-shell eggs, many puppies lived.
Since they walked more easily than other animals at that time, they easily found food and escaped from their enemies.
Some dinosaurs did not suffer from food because they ate grass and some ate meat.
Because they were one of the most powerful species of their time, other species did not interfere with them.

There were many species of dinosaurs on earth (around 850). Some of them were fed with plants (sauropod), some were eating meat (theropod). The most crowded herbivorous dinosaur species were apatosaurus and brachiosaur. They were the biggest animals ever. For example, apatosaurus could reach 30 tons in weight and 21 meters in length. But they found that the smallest of the T-Rex was 19.4 meters. Moreover, carnotaurus horned, not very common species. Ceratosaurus species also had small feet; but he was very deadly. Other herbivorous dinosaurs had special weapons to protect themselves from carnivorous dinosaurs. For example, while triceratops carried three horns at the beginning, the ankylosaurus was protected by protruding bones, while stegosaurus had pointed spines in the tail. Of course there were some short-legged dinosaurs. Dinosaurs such as deinonychus and cousin oviraptor can be given as examples. These dinosaurs can be fast and predatory. Carnivorous dinosaurs, like humans, were walking on their hind legs. Their front legs are very tiny. Some of them, such as Spinosaurus, Tyrannosaurus and Carnotaurus, were extremely large, while Compsognathus (about 5.5 kg and 60 cm) were extremely small. Dinosaurs' eggs were rather thick-skinned. It protects the baby in the crust, and thanks to the special bond in it, the pup grew in confidence. At the same time as dinosaurs, there were pterosaurus, which could fly, but they were not very close to dinosaurs. There were also many swim reptiles such as ichthyosaurus and plesiosaurus. But they did not have a close relationship with the dinosaurs.

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