Dinosaur (English name: dinosaur) is a reptile that appeared in Mesozoic (Triassic, Jurassic and Cretaceous). Its vigorous limbs, long tail and huge body are the portrayal of most dinosaurs. They mainly inhabit woodland or open areas in lakeshore plains (or coastal plains).

184 1 year, when British scientist richard owen studied several lizard-like bone fossils, he thought they were left by some prehistoric animals and named them dinosaurs, which means "scary lizards".

The sudden disappearance of dinosaurs at the end of Cretaceous 65 million years ago became a mystery in the evolutionary history of life on earth. This mystery has not been solved so far.

In the past, all living things on the earth were recorded in fossils. Many dinosaur fossils have been found in Mesozoic strata. A large number of bones or various shapes can be seen in it.

However, in the subsequent Cenozoic strata, there were no fossils of non-bird dinosaurs at all, thus inferring that non-bird dinosaurs died out together in Mesozoic, and now only birds are left. Most scientists agree that "birds belong to dinosaurs".

There are many kinds of dinosaurs, and their shapes and habits are very different. The largest fragile double-chambered dragon may be more than 50 meters, while the smallest hummingbird may be less than 10 cm. As far as eating habits are concerned, there are docile herbivores and fierce carnivores, as well as omnivorous dinosaurs who are both vegetarian and vegetarian.

Extended data:

foraging

The plants that herbivorous dinosaurs can eat are highly restricted, so some small herbivorous dinosaurs will stand on their hind legs in order to eat the leaves of tall plants. Carnivorous dinosaurs ate herbivorous dinosaurs and other animals. Various dinosaurs' different ways of foraging will also be reflected in their teeth.

struggle

Sharp teeth and claws are hunting weapons for carnivorous dinosaurs. Tyrannosaurus rex would look for individual herbivorous dinosaurs, so they often acted alone. And some dinosaurs will act in groups, lock their prey and flock to it, and cut the abdomen of their prey with the claws of their second toe.

Herbivorous dinosaurs generally have some special "equipment" to deal with the attack of carnivorous dinosaurs. These devices are sometimes tough leather armor, bone sticks or nails, and sometimes powerful tails. Like a cudgel dragon. Large herbivorous dinosaurs will act collectively, and once threatened, they will collectively hold their ground and fight back.

References:

Dinosaur-Baidu Encyclopedia