Скачать с ютуб 76 , do you know about DINOSAURS let's learn and color в хорошем качестве

76 , do you know about DINOSAURS let's learn and color

Dinosaurs are a group of ancient animals or reptiles. Dinosaurs first appeared in the Triassic period, around 245 and 233.23 million years ago, and were the dominant vertebrates for 135 million years, starting from the Jurassic period (around 201 million years ago) until the end of the Cretaceous period (65 million years ago), and then disappeared due to the Cretaceous-Paleogene extinction event before the Mesozoic Era. Research on dinosaur fossils shows that birds evolved from Theropod dinosaurs during the Jurassic period, therefore birds living today have been classified by paleontologists as one of the dinosaur sub-groups. Some birds that survived the extinction 66 million years ago and their descendants continue to survive. dinosaurs have lived until now. Dinosaurs can be classified into various groups of animals from the point of view of taxonomy, morphology and ecology. More than 9,000 species of birds are the most diverse type of vertebrate dinosaurs, besides fish perciforms. Using fossil evidence, paleontologists have identified more than 500 different genera of dinosaurs, and more than 1,000 species of nonbird dinosaurs. The type of dinosaur on each continent can be determined from the species that are still alive or from fossil remains. Most of them were herbivores, while the rest were carnivores. Most of the descendants of dinosaurs which are still alive are bipedal (two-legged), but most of the types of extinct dinosaurs are quadrupedal species (four-legged). Elaborate visual structures such as horns or crests were generally had by all groups of dinosaurs, and several extinct groups also had distinctive bone structures such as spines and sharp backbones.