The earth has existed for about 4.6 billion years. Although human beings have a long history, they are so short compared with the entire earth. Scientists have discovered that there was a big explosion of life on the earth 500 million years ago. It is precisely because of this big explosion that species were born and evolved for 12 epochs. The dominance of the earth in different geological epochs is different. The following Let's take a brief look at the evolutionary history of life on earth.

The overlords of the earth in all ages

The beginning of life in the universe - the Cambrian period, about 542 million years ago - 485 million years ago, the earth was almost covered by oceans at this time. In the early Cambrian period, many invertebrates of different shapes were born, and the number of filter-feeding creatures was small, but they could be called the overlords of the ocean. After the outbreak of the Cambrian period, the survival of species began to have fierce competition, species evolved for survival, and hard shells appeared.

A species called odd shrimp dominated the Cambrian period. They had extremely sharp claws, which made them invincible. Any prey that approached them would be crushed and swallowed. Therefore, the size of the odd shrimp grew bigger and taller. Can reach 2 meters.

488 million years ago, the Cambrian came to an end, the Ice Age ended, and the Ordovician ushered in. At the beginning of the Ordovician, the earth's geological structure and climate underwent tremendous changes, and these changes also affected the structure of the earth's species.

Hornstone appeared. Hornstone is a kind of creature that can hide the fleshy flesh in the carapace, and expose the harmful weapons such as arms and legs on the surface. The horn stone is about 9 meters long, and the former overlord, the prawn, could only be reduced to food in front of it. Therefore, the horn stone became the well-deserved overlord of the Ordovician.

At the end of the Ordovician period, the ozone layer on the earth was destroyed by cosmic gamma rays, and a large amount of ultraviolet rays irradiated the earth's surface, resulting in the extinction of 60% of organisms, and a major reshuffle of the ecological chain. Horseshoe crabs appeared. They were oppressed by cornerstones and evolved. Facing the violent sea surface, horseshoe crabs completed the isolation of motility and respiration, which made their actions more flexible and successfully counter-killed. They were hunted by cornerstones. To hunt cornerstones. Therefore, he succeeded in becoming the overlord of the Silurian period.

400 million years ago, the Devonian period began. In order to resist horseshoe crabs, Dunkleosteus has undergone comprehensive evolution. They have evolved sharp double pincers and hard carapaces. They can reach 11 meters in length, weigh 4 tons, and have a bite force of up to 5 tons. invincible.

Deng's fish dominated the ocean during the Devonian period, but horseshoe crabs quietly opened up new habitats, and some horseshoe crabs climbed onto land during the Silurian period. However, with the movement of a large number of volcanoes and earthquakes at the end of the Devonian, fish were wiped out in large numbers, and horseshoe crabs began to dominate again. However, not only horseshoe crabs, giant vein dragonfly and ancient centipede form a tripartite confrontation.

The Permian period ushered in the highly oxygen-rich atmosphere of the earth, and the entire earth was almost ignited. The salamander with a body length of 1.8 meters, thick limbs, a huge skull, and a very similar crocodile took the throne.

During the Triassic period, dinosaurs began to rise. During the Jurassic period, a suitable environment allowed plants to reproduce rapidly, and dinosaurs naturally became the rulers of the earth. During the Cretaceous period, dinosaurs became larger and larger, and the status of the overlord of the earth was very stable.

At the end of the Cretaceous period, species including the dinosaurs suffered a mass extinction. The earth was reshuffled, the new generation came, mammals began to occupy the land, and humans were born.

Although humans do not have the size advantage of the previous earth overlords, we have evolved to develop brains, learn to make and use tools, and create anything we can imagine.

Who will be the new overlord after mankind?

After seeing so many eras that the earth has experienced, do you also think that no one will be eternal, species will eventually be extinct, and the extinction of old things means the coming of new things. So if human beings disappear, who will be the new overlord of the earth?

Some biologists say that ants will replace human overlords. Why do you say that?

Experts said that ants have a strong sense of community, and to survive in nature, community is very important. Although ants are small in size, their cooperative survival mode is very powerful, and their cooperation with each other can be orderly and extremely efficient. It can be said that, apart from humans, ants are the most cooperative creatures.