What is the Last Dynasty of Dinosaurs? How did the age of dinosaurs come about?

The pre-Paleozoic era of dinosaurs is because the dinosaurs are in the Mesozoic period, and the Paleozoic era is the first generation of the Phanerozoic, the previous generation is the Neoproterozoic of the Proterozoic of the Proterozoic, which belongs to the Precambrian Proterozoic, the next generation is the Mesozoic, the Jurassic of the Mesozoic era is the heyday of dinosaurs, and the dinosaurs that appeared and began to develop in the Triassic have quickly become the rulers of the earth.

The Paleozoic Era represents an ancient era of organisms that lasted for about 300 million years. It is a very important time for the animal kingdom.

The Earth used to be a kind of hegemon, but it was all extinct due to a meteorite impact. Then humanity becomes the new master. Although we can't see dinosaurs now, have dinosaurs ever seen us humans, have we ever lived with dinosaurs?

From the excavated dinosaur fossils, geologists have found that dinosaurs lived three centuries ago from now. They were the overlords of the time, because they were the strongest, the most diverse, the most widely distributed, and the most **, and lived on the earth for about 100 million years.

In the early and middle Triassic period, because of the scarcity of water resources on the earth, most of the small, fully evolved small reptiles replaced the large mammals and predatory dinosaurs, and there were some small dinosaurs in between, and later they were found in the sky and the sea.

Dinosaurs are huge species that existed hundreds of millions of years ago, and humans first appeared 5 million years ago, which means that humans could not have appeared in the world of dinosaurs. But some people believe that primates are the ancestors of all mammals, and that this species must have existed in the time of the dinosaurs, and that this race is the same species as the ancestors of us humans and ape-men 5 million years ago.

In 2007, Science wrote that flying monkeys may be the closest species to primates, and in 2010, some scientists believed that an important part of the origin of primates that disappeared 55 million years ago was the mammalian phantom mouse. Various realities suggest that our ancestors did live with dinosaurs 65 million years ago, but they were supposed to be small mammals at the time.

Even though there were no real people in the age of the dinosaurs, but they lived with the common ancestors of our current creatures, from another point of view, humans witnessed the disappearance and prosperity of the dinosaurs, in fact, this will definitely happen.

Non-avian dinosaurs lived on Earth for hundreds of millions of years, and a branch of theropod dinosaurs branched off into birds, but at the end of the Cretaceous period, they suddenly disappeared from all parts of the world. Since the 70s of the 20th century, various theories and hypotheses about the extinction of non-avian dinosaurs have been promulgated, and a debate on an unprecedented scale has been introduced.

The orogeny said that the orogeny that took place at the end of the Cretaceous period dried up the swamp, and many dinosaurs that called the swamp home could no longer live. Because of climate change, plants also changed, and herbivorous dinosaurs were unable to adapt to the new food and became extinct.

The extinction of the herbivorous dinosaurs caused the carnivorous dinosaurs to lose their grip and become extinct as a result. This extinction process lasted between 10 million and 20 million years. By the end of the Cretaceous period, dinosaurs were extinct on the earth.

Climate change says: As a result of tectonic plate movements, ocean currents change, causing huge changes in the climate. The cold and dry climate killed plants, and the dinosaurs died out due to lack of food.

According to Robert Barker, the ebb tide of the ocean, when the land borders each other, organisms come into contact with each other, thus causing the extinction of a certain type of organism. Kangaroos, for example, can survive on island continents such as Oceania, but they become extinct when they encounter other animals on the South American continent.

In 1980, American scientists Alfretz and Sons discovered a high concentration of iridium in the strata 65 million years ago, and its content exceeded the normal level by tens or even hundreds of times. Such concentrations of iridium can be found in meteorites, so scientists have linked it to the extinction of dinosaurs.

There are many creatures that have survived from the age of dinosaurs to the present, for example, many birds are a branch of dinosaurs. There are also the lizards, crocodiles, snakes that we are familiar with, and these cold-blooded animals have also survived from that time to the present. There are also some insects, such as cockroaches, bees, lice.

There are also some in the water, such as lobsters, turtles. Some mammals, such as the duck-billed tomb and so on.

The age of dinosaurs is a big era that dominates the earth, the Cretaceous is a heyday, of course, it is said that it is the heyday also means that it is about to decline, and I don't know whether it is a natural disaster or a "man" disaster, some people say that it is an asteroid that collides with the earth, and some people say that it is a ghost made by aliens, which cannot be verified. But the mainstream thought is that an asteroid collided with the Earth 65 million years ago, causing a sharp change in the Earth's climate.

Because of the drastic changes in the climate at that time, the temperature dropped severely, and the earth entered an ice age, and a large number of organisms did not have enough food, and only some good creatures were fortunate to survive. Although it was a fatal impact, some of them were lucky enough to survive, including some aquatic creatures and some small creatures.

For example, the well-known cockroach, which can be said to be a very annoying creature in our house, but it has existed longer than we humans. Think of him as having experienced the mass extinction of the dinosaurs. Because that fatal disaster did not have a great impact on this guy, because his vitality is extremely tenacious, a cockroach, if there is no head, it will not die at first, and the reason why he died is because there is no part to eat.

There are also lice, bees, and they all survive to this day.

There are also some avian creatures, such as chickens and birds, their bones are very similar to the dinosaurs at that time, and many people now say that the most dinosaur-like ones now are not only chickens? There is also the lizard, he looks like a dinosaur, but he is not related, many of the larger lizards have died, but the ones that survived at that time were all smaller, and now they are all over the world.

Cretaceous dinosaurs include: Rex Rex, Brute Dragon, Maprosaurus, Australopinosaurus, and Salodontosaurus.

1. Tyrannosaurus rex.

Tyrannosaurus rex was not only the strongest predator at the end of the Cretaceous period, but also became the most ferocious species of all carnivorous dinosaurs with its huge size and strong bite force, with a maximum body length of meters and a strong bite force of 200,000 Newtons, making it a well-deserved king of dinosaurs.

2. Brute Dragon. Barbarian dinosaur is the largest carnivorous dinosaur in North America, born at the end of the Jurassic period, survived until the early Cretaceous period, the maximum body length can reach meters, and the bite force can reach as much as 15 tons, only inferior to the Tyrannosaurus rex, a single tooth can grow to a centimeter long.

3. Maprolong.

Maprosaurus is currently the fourth largest carnivorous dinosaur, the largest estimated body length reached meters, appeared at the end of the Cretaceous period, is considered to be able to rival the existence of Tyrannosaurus rex, although the teeth are small, but the sharp socks are sharp like blades, has a very strong hunting ability.

4. Southern Giant Dragon.

Australopithecus and Maprosaurus belong to the same family of sharkodontosaurs, and is one of the largest carnivorous dinosaurs found in South America, with a body length of up to 20 meters, teeth up to 20 centimeters long, like a dagger pointed and thin, able to easily cut and pierce the prey**, so it is called one of the ten strongest dinosaurs in the Cretaceous.

5. Sharkodontosaurus.

Sharkodontosaurus flourished mainly in the middle to late Cretaceous period, with the largest body length reaching 14 meters, and its weight remained at a ton, with sharp teeth similar to those of modern man-eating sharks, but with a small brain capacity and less intelligence.