Dinosaurs were vertebrate animals that dominated terrestrial ecosystems for a period of approximately 160 million years, first appearing on our planet with about 220 million years ago, at the end of the Triassic period. At the end of the Cretaceous period, now about 65 million years ago, most of the dinosaurs would have suffered a catastrophic extinction caused by changing global temperature and the Earth impact with a giant meteorite with a diameter of 10 km in the Gulf of Mexico that created Chicxulub Crater, and it would be not only ended the period of domination of land by these animals, but even their existence. However, modern birds are direct descendants of the considered type theropod dinosaur of the family with the kidnappers first representative bird "Archaeopterix" who lived 150 million years ago. Have discovered fossils of feathered dinosaurs but were too heavy to fly. =))))))
