How many types of dinosaurs are there, please 3Q

There are many types of dinosaurs, and they are divided into two major categories, one is called ornithosaurs and the other is called saurosaurs. From their fossilized teeth, it can also be inferred whether they are carnivorous or herbivorous.

1. Build a gas dragon. It was a small, primitive carnivorous dinosaur with a body length of 4 meters and a weight of about 130-140 kilograms. Its main characteristics are a large and light head, dagger-shaped teeth with flat and sharp teeth, a short neck, strong and powerful hind limbs, sharp claws at the end of the toes, and it is good at running fast on both feet and preying on other animals, and it is a terrifying predator in the dinosaur fauna of Dashanpu.

2. Gan's Sichuan Dragon. Szechuanosaurus (scientific name: Szechuanosaurus) is a dinosaur of the family Sinoraptoridae. It lived in Asia during the late Jurassic period. It resembles a small Allosaurus in appearance, weighing about 100-150 kilograms and measuring about 8 meters in length.

3. Petroleum Karamaylong. It is a species of theropods, carnivorous dinosaurs, Allosauridae, and Karamayisaurus. Carnivorous, about 6 meters long, lived in the early Cretaceous, mainly distributed in China, fossils found in the Ordos Basin of Xinjiang, the material is some jaw fragments.

Karamayisaurus was a large carnivorous dinosaur from the early Cretaceous period.

4. Tyrannosauridae. is a broad term for carnivores with huge heads and short forelimbs. It was also one of the last carnivorous dinosaurs on Earth.

All members of the Tyrannosauridae family have the same characteristics except for slight differences in the distribution area, age, size, etc., the largest of which is the Rex Tyrannosaurus.

5. Chilongke. It is a group of theropod dinosaurs that resemble birds. They were group-sized medium- to small-sized carnivorous dinosaurs that flourished in the Cretaceous period. In informal usage, they are often referred to as "raptors".

Dinosaurs were a large family in the Mesozoic Era and dominated the animal world at that time.

In terms of time, dinosaurs lived for hundreds of millions of years; In terms of distribution, it covers all seven continents of the earth. However, most dinosaurs were found in the United States, Mongolia, China, Canada, England, and Argentina.

In the United States, 64 genera of dinosaurs have been discovered, ranking first in the world. 40 genera were found in Mongolia, 36 in China, 31 in Canada, 26 in the United Kingdom, and 23 in Argentina. (Animals that are similar to each other are taxonomically classified into the same "genus", such as cats, tigers, lions, leopards, etc., all belong to the genus Cats, but they belong to different species.)

Most dinosaur genera have only 1 species, and a few dinosaur genera have 2 or 3 species. According to statistics, there are 285 dinosaur genera found so far, with 336 of each.

We believe this is not the actual number of genera and species of dinosaurs that ever lived on Earth. There are also a large number of dinosaur bones buried deep in the ground, which have not yet been discovered. There are also many dinosaurs who may have traveled in the world in vain, leaving no relics behind after death.

Professor Dodson of the University of Pennsylvania in the United States has been studying for many years how to estimate the number of genera of dinosaurs that have survived on Earth. He estimates that 900-1,200 genera of dinosaurs once lived on Earth. But only some of them have been discovered.

And very few have been seriously excavated and studied after discovery.

According to Dodson, the number of dinosaur genera we have found is about 1 3-1 4 of the actual number. This shows that the task ahead of dinosaur experts is still quite enormous, and the discovery and research of dinosaurs has a long way to go. With the deepening of dinosaur research, new dinosaur genera and species will continue to be discovered.

As long as the bones remain, they will not be buried, and there will always be a day when they will become famous!