What are different types of dinosaurs?

The most important thing is that there were two dinosaurs' orders: bird-bird and lizards. Dinosaurs with a bird (Ornithiscians) consisted of various herbivores, including stegosaurus , triceratops , anemosaurus Hadrosaurs (duck dinosaurs) and strong Hed-Head Dinosaurs. Dinosaurs of the lizard (Saurischians) included therapy, which included every carnivorous dinosaur, and sauropods that were the largest animals ever walking on the ground.

Dinosaurus evolved from the ancestors of archosaurs in the middle triasic period, about 230 million years ago, not long after the greatest mass extinction in the country's history. Archosaurs are a group that includes modern birds and crocodiles, but at that time they had a generally creeping look. The common features of archosaurs include teeth set in sockets, special holes in the skull to reduce weight, and other notches on the femur for muscle connection. Dinosaurs are basically just archosaur reptiles with limbs held under the body. First dinosaurS is considered to be a small bipedal predator. About 215 million years ago, the extinct event was smoked by many of the biggest competitors of dinosaurs, including basal archosaurs and mammal ancestors, therapsids. Before this extinction, the dinosaurs accounted for only 1-2% of land animals and then represented 50-90%. Dinosaurs diversified to fill empty niches, including medium predators, large predators, medium herbivores, large herbivores, etc.

Although the dinosaurs diversified soon, they did not gain size only after the Triassic-Jurassic extinction 200 million years ago, which even more aggressive smoked the remaining competitors of dinosaurs. The earliest dinosaurs were "small" (up up to 20 ft) sauropods that had long necks and walked on four legs, ate plants and carnivorous dinosaurs teropod (with a body plan superficial t.

during JurassicThe dinosaurs diversified the period even more impressive. The interplay between predators and prey gave rise to many adaptations on both sides: herbivorous dinosaurs have gained either extreme size or unique arrangement of armor or weapons such as tail clubs or tips. Predators have enlarged and smarter, with larger teeth, stronger jaws and a longer head that held them. This culminated in the giants as t. Rex .