What was the earth like before dinosaurs?

Before the age of dinosaurs, who was the overlord on earth? After reading the long insight!

I think dinosaurs must have ruled the world, because no one is stronger than them.

The earth should have more land than the ocean, and then the land separated from the ocean became more and more.

Before the advent of dinosaurs, life on Earth was very harmonious.

Before the advent of dinosaurs, there were already a lot of animals on the earth.

Maybe there were all kinds of monsters living there, after all, it was very far away.

It is possible that this thing exists to the extent that there is a creature beyond the current culture.

I think this should be similar to what it is now, but there are more trees.

I think it's probably just an ocean, without any living things.

It was a world we hadn't seen before, and no one knew about it.

I think the earth is an ice age, and there are no living creatures, so they can't survive.

Dinosaur (English name: dinosaur) refers to the most recent common ancestor of Triceratops, modern birds, and Diplodocus and all its descendants.

To facilitate research, dinosaurs can be divided into avian and non-avian dinosaurs. Among them, non-avian dinosaurs lived only in the Mesozoic era (Triassic, Jurassic and Cretaceous) and were all extinct 65 million years ago. This entry mainly introduces non-avian dinosaurs.

The muscular limbs, long tails, and massive bodies are some of the non-avian dinosaurs. They mainly inhabit woodlands or open areas on lakeshore plains (or coastal plains).

In 1841, when British scientist Richard Owen studied several fossilized lizard bones, he believed that they were left by some prehistoric animal and named them dinosaurs, which means "terrifying lizards".

Dinosaurs were animals that were somewhere between cold-blooded and warm-blooded

In June 2014, the question of whether dinosaurs were warm-blooded like birds and mammals, or cold-blooded animals like reptiles, fish, and amphibians, was finally answered, and dinosaurs were somewhere between cold-blooded and warm-blooded.

Our results show that dinosaurs possess growth rates and metabolic rates that are not characteristic of either cold-blooded or warm-blooded organisms. They are neither like mammals or birds, nor like reptiles or fish, but somewhere between modern cold-blooded and warm-blooded animals. In short, their physiology is not common in modern society.

Brian Enqvist, an evolutionary biologist and ecologist at the University of Arizona in the United States, said.

Mexican biologists say it was this moderate metabolism that allowed dinosaurs to grow larger than any mammal. Warm-blooded animals need to eat a lot of food, so they hunt and chew plants frequently. "It's hard to imagine a Tyrannosaurus rex-sized lion being able to eat enough to survive.

Dinosaurs really existed. From the Triassic to the Cretaceous, it is called the "Mesozoic" era in geological time, and it is the era of large reptiles. Dinosaurs are the most famous representative species, so this era is also called the "Age of Dinosaurs".

The discovery of dinosaur fossils has a long history. Long before the Mantels discovered the avian dragon, Europeans knew that there were many gigantic skeleton fossils buried underground. However, at the time, people did not know their exact attribution, so they were always mistaken for "the remains of giants".

It wasn't until Mr. and Mrs. Mantel discovered the avian dragon and compared it to the iguana that the scientific community initially determined that it was a lizard-like and long-extinct reptile.

Dinosaurs appeared on Earth about 235 million years ago. It was completely extinct 65 million years ago.

During the Mesozoic Era, hundreds of millions of years ago, a class of reptiles lived on the earth - dinosaurs. Dinosaurs with their sturdy limbs, long tails, and large stature are a true portrayal of most dinosaurs, and they are also a diverse dominant terrestrial vertebrate. Because of their large size, most dinosaurs lived mainly in woodlands or open areas on lakeshore plains (or coastal plains).

No, how do I remember that the dinosaurs ruled the earth for hundreds of millions of years? Dinosaurs were a group of animals that lived between 235 million and 65 million years ago and were able to walk upright with hind limbs supporting their bodies, and dominated the world's terrestrial ecosystems for more than 160 million years. Most of the dinosaurs have gone extinct, but the descendants of the dinosaurs, the birds, have survived and survived to this day.

It was twenty-four million five million, one million five million, two wings ago, forty thousand years ago.

Dinosaurs appeared in the late Triassic period about 100 million years ago, and their origin and evolution are closely related to changes in the earth's environment and ecosystems. According to scientists' speculation, the main reason for the appearance of dinosaurs was the change of ancient terrestrial ecosystems, including the evolution of vegetation on land, climate changes, large-scale volcanic eruptions, etc. These changes and submersibility of the dinosaurs allowed them to adapt to the new environment with physiological characteristics and behavioral habits, which eventually made them occupy an important position on the earth.

Dinosaurs were reptiles that appeared on Earth, and their ancestors can be traced back to the late Triassic period, about 100 million years ago. At that time, the ecological environment and climatic conditions on Earth were very different from today, and many reptiles and early mammals lived together in this world.

In the late Triassic, the Earth's continents began to drift, forming the prototype of the modern preulnar continent. At this time, some of the early reptiles began to evolve in different directions, and one of them evolved into the ancestors of the dinosaurs. These ancestors lived on the earth for about 100 million years and experienced many environmental and ecological changes.

During the Jurassic period, the climate on Earth was warm and humid, which was suitable for dinosaurs to survive. At this time, the species of dinosaurs reached their peak, and many giant dinosaurs and flying dinosaurs appeared. These dinosaurs lived on the earth for about 100 million years until the end of the Cretaceous period, when they were wiped out by a series of reasons, including asteroid impacts, volcanic eruptions, climate change, etc., and the dinosaurs gradually went extinct.

In conclusion, the appearance of dinosaurs on Earth was due to the evolution of early reptiles and the impact of natural disasters such as asteroid impacts on Earth. Although dinosaurs have been extinct for millions of years, their existence provides an important historical context for the evolution of life on Earth.

Dinosaurs were creatures that appeared and multiplied in the prehistoric period when the earth was overwhelmed. They appeared about 100 million years ago in the Triassic period and became extinct at the end of the Cretaceous period, about 65 million years ago. Dinosaurs were able to reproduce and survive on Earth mainly because they adapted to the environmental conditions of the time.

Dinosaurs made a significant contribution to the occupation and evolution of land, developing into a variety of species of different shapes and sizes. They have adapted to different ecological environments in the long-term evolutionary process, and their distribution range includes various ecological types such as land, wetland, and water. However, dinosaurs eventually became extinct under the influence of a series of complex factors, such as climate change, celestial collisions, etc.

As for the specific cause of the extinction of the dinosaurs, Zheng Na, the scientific community has not yet reached a consensus on it.