Our Earth Jurassic Age of Dinosaurs .

In the late Permian period, 100 million years ago, a mammal-like reptile appeared on Earth that looked similar to the hippos we often see in modern zoos. This animal is a water dragon. At that time, there were no mammals on Earth, but water dragons already had many early mammalian characteristics.

Their main living areas at that time were usually concentrated in swamps and lakes. According to the research of scientists, the number of water dragons at that time was speculated. It surpassed 1 billion at a time.

Since the water dragon was the closest mammal of all the ancient creatures of the time, many paleontologists also believe that the water dragon can be considered the ancestor of the whole mammal, and that humans are also mammals. Then the water dragon can also be regarded as the ancestor of humans. At that time,With the drift of the continents, water dragons spread all over the world, which also laid a solid foundation for the later water dragon beasts to "rule" the world.

Despite its size, the water dragon is a herbivore. At that time, the earth was lush with vegetation, so the food of the water dragon animals was relatively abundant. Moreover, at the time of the fourth mass extinction of life on Earth, the Hydrosaurus survived by accident and has been in the "green and yellow" era of the Earth for almost a million yearsThe water dragon beast ushered in its own ** era, and due to the large number, the water dragon beast has become the absolute overlord of the earth.

Before the advent of human beings, the absolute overlord of the earth was the dinosaurs, before the appearance of the dinosaurs, who was the absolute overlord of the earth? The answer is something that many people don't think of, when we think carnivores are the most ferociousBefore the advent of dinosaurs, the overlord of the earth was a herbivore, and its name was Hydrosaurus.

However, the water dragon somehow vanished. After research by scientists, it is speculated that it may have been because of a very serious natural disaster that broke out on the earth at that timeThis leads to a shortage of food for the Hydrodracons, as well as a dramatic change in the environment, making it impossible for the Hydromon to survive in the new environment. Thus, during the time of the dinosaurs, there were not even hydrosaurs on Earth, but after Hydrosaurons, Kenthorn, which was closer to the mammals on Earth, appeared.

It can be said that to this day, the continuous evolution of life on Earth is indeed a very wonderful process that deserves everyone's admiration.

Who was the ruler of the earth before the dinosaurs ruled the earth? Scientists give the answer.

Before the dinosaurs dominated the earth, the ruler of the earth was a fish that lived in water, and it was also very large and fierce.

I think it's some high-level animals, because they have some power.

This one should be some strange creatures, it should be crustaceans.

Before dominating the earth, the rulers of the earth should belong to the ancient creatures.

The earliest earth was like this:

Archean Bacteria and algae appear

Proterozoic cyanobacteria and bacteria began to flourish, and invertebrates appeared in the Cambrian period and marine invertebrates increased in abundance

Ordovician Algae developed extensively, marine invertebrates flourished Silurian ferns appeared Shinwa, and fish appeared

Devonian gymnosperms appeared, insects and amphibians appeared in Carboniferous reptiles

In the Permian period, the pine and cypress species began to develop

In the Triassic period, mammals appeared, and dinosaurs profligate in large numbers

Jurassic Gymnosperms flourish and birds appear

Cretaceous angiosperms appeared in large numbers and reptiles decreased dramatically in the later Paleogene period Mammals multiplied rapidly and angiosperms flourished

The Neogene flora and fauna are close to the modern era

Quaternary Emergence of Humans It should be the Quaternary now

Introduction: When it comes to dinosaurs, many people feel very excited, especially many boys, in fact, the era in which dinosaurs lived was mainly in the Jurassic and Cretaceous eras. Dinosaurs began to appear in large numbers, so what are the differences between the two in the same dinosaur era?

The Jurassic period was when dinosaurs first appeared, when there was just a mass extinction, so dinosaurs began to gradually become land overlords. During this process, a lot of gymnosperms appeared, and the herbivorous dinosaurs began to grow with the gymnosperms gradually, and they were huge. And gymnosperms also rely on these herbivorous dinosaurs to have more opportunities to reproduce.

In this process, many small dinosaurs began to gradually evolve into large food animals, so in this process, Jurassic dinosaurs changed from small to large, and the number of dinosaurs gradually increased from the original relatively small. The dinosaurs of the Cretaceous period are in their heyday, and there are various types of dinosaurs in the Cretaceous period, in addition to the large carnivorous dinosaurs running on the ground, there are also dinosaurs flying in the sky, and dinosaurs that catch fish. And in the Cretaceous era, angiosperms appeared, and the appearance of bees helped these angiosperms to be able to pollinate.

Therefore, the Cretaceous dinosaurs became more and more diverse, and the number became more and more numerous, and they became the real overlords on the ground.

Dinosaurs, as a species that reproduced in large numbers on the earth in the early days, had not yet been completely differentiated on the continent at that time, and the dinosaurs used their own groups to reproduce at that time, which did shape the living environment of the earth to a certain extent. During that period, the oxygen and carbon dioxide levels on the earth were not the same as they are now, so the study of dinosaurs can understand the whole process of the emergence and extinction of this species, and can provide a lot of reference for human survival. In addition, the distribution of dinosaurs is also conducive to the study of the movement of continental plates, and allows people to better understand the structure of the entire ecosystem, so it is necessary to actively carry out dinosaur research.

The difference is that the living environment is different, the living environment of the organisms is different, the biological species are different, the impact on the organisms is different, and the air quality is not the same.

There are species differences, dinosaurs are not the same species, different body sizes, different overall structures, different food chains, and different living environments.

The number of dinosaurs, the size of dinosaurs, the needs of dinosaurs for the environment, the combat effectiveness of dinosaurs, and the specific conditions of dinosaur growth and development are all different.

The era to which they belong is different, the types of dinosaurs are different, and then the living environment is different, the temperature is different, and the climate is different.