A sea animal that predates dinosaurs?

A lot of them, like ammonite, sea lily and the like.

Smoothodontosaurus is the most powerful.

The length is 25 meters.

100% lethality

More powerful than a giant shark.

It is about a submarine that strayed into a place when it moved in the sea, and after the submarine went to the surface, it found that it came to a place in the age of dinosaurs, and there were dinosaurs on land, on water, and in the sky

Sassosaurus Triassic 30 meters long.

Introduction: Many people find it very strange to see dinosaurs, but there are animals that are earlier than dinosaurs. Many people don't know that netizens are also very concerned.

When they hear that there are animals that predate dinosaurs, most people are curious and want to know. Today, I'm going to tell you what animals that are older than dinosaurs look like. <>

The shell of this insect is particularly hard, and it is roughly equal in three places, so people will call it a trilobite, and they all live in the ocean. Trilobites survived for more than 300 million years throughout ancient times and made a deep impression on people, and they are almost impossible to see today. <>

Today I will tell you what are the characteristics of this pain, most of the shapes of this animal are oval, but the body and shape are very different. Some are so small that they can only be seen with a microscope, so this animal is relatively rare in ancient times, and many people are also very curious. The life of this animal is also very complicated, and its vitality is very tenacious.

What I want to tell you today is that we must protect animals, and animal life is also very fragile, although these rare animals may not be seen again. But in reality, we also have to be a person who protects animals. I often like animals very much, if I see a stray animal, I will definitely help it find a home, so that animals are also very happy and happy, they are the best friends of human beings, we must treat them well, so that we can form a good mode of getting along.

Although ancient animals may no longer be visible, in real life, we can still protect animals.

The horseshoe crab, which has been around since hundreds of millions of years ago to the present day, is known as a living fossil and is a creature that lives in the ocean, with blue blood and the ability to resist bacterial invasion.

Animals older than dinosaurs are terrifying, a bit like dragons, and a bit like phoenixes.

The horseshoe crab, this animal is a very old animal, it is very strange, like a stone, very ugly, a little similar to Wang Ba.

They should all look very strange, and they should all be some microorganisms, and they should all be things that grow in the water.

Animals older than the dinosaurs had a very large size and looked particularly frightening.

The first animals appeared 100 million years ago, the first vertebrates appeared 100 million years ago, the first jawed fishes appeared 400 million years ago, the first amniotic animals appeared 300 million years ago, the first dinosaurs and mammals appeared almost simultaneously 100 million years ago, what do you say about animals older than dinosaurs.

The dinosaurs that lived in the ocean mainly include Madagascarsaurus, Malayan dragon, Dominicronosaurus and Margotsaurus. The Madagascartosaurus was a huge marine carnivorous dinosaur that was able to move quickly through the water and was so large that it could eat many large fish. The Malayosaurus, on the other hand, was a small, marine carnivorous dinosaur that was able to move quickly through the water and had powerful sucker-like arms to immobilize and protect itself.

In addition, a number of small pygmy fossils have been found, such as Dominiconsaurus, Cajinsaurus, Ultrakinosaurus, and Southern Pygmy Dragon.

TrilobitesTrilobites are the most representative ancient animals that appeared in the Cambrian period hundreds of millions of years ago. They are one of the arthropods. The whole body is clearly divided into three parts:

Head, thorax and tail. Their back shell is hard. Their dorsal shell is divided longitudinally into three roughly equal parts, one axillary and two rib leaves, so they are called trilobites.

They lived in the ancient oceans, mainly in the Cambrian period, and reached their peak in the late Cambrian period. After that, the trilobite went from its peak to decline, and continued to become extinct at the end of the Permian, and did not enter the Mesozoic Era. Trilobites thrived throughout the Paleozoic Era for more than 300 million years.

One meter long is a national first-class protected animal, this ancient animal, earlier than dinosaurs!

Shi Ronglu!! The earliest primitive animals.

Today's introduction is also a living fossil, but this living fossil is different, other animals have undergone changes over time, and will evolve with the living environment, which is somewhat different from before. But the one we're going to introduce today is different, even after tens of millions of years, it's still the same as before.

Because even among the extant animals there are large animals, and even some animals are no smaller than the dinosaurs. However, from a macro point of view, it is true that the average size of animals is now a bit smaller than that of dinosaurs. So, what are the animals that are close in size to dinosaurs?

And what causes this? Let's take a look. First of all, let's be clear, dinosaurs also come in size.

For example, the smallest dinosaur is only about 1 meter long and weighs less than 3 kilograms, while the largest dinosaur ** dragon can be 40 meters long and weighs nearly 100 tons. Judging from the dinosaur fossils that have been discovered, the earliest dinosaur was Archaeopteracian that lived in the middle of the Triassic period (about 100 million years ago), and its body length was only about one meter. Why did the flora and fauna grow so big at that time?

What are the flora and fauna that big now?

First of all, the climate and ecological environment at that time were good. In most of the era when the dinosaur family survived, the ecological environment of the earth was very good, especially in the Cretaceous period, which can be said to be much better than the current ecological environment of the earth, when the climate on the earth was relatively warm and humid, the plants grew lush and verdant, and the good rainfall and light conditions allowed the plants to grow very large, and because of the abundance of food, the animals were not afraid of nutritional deficiencies.

Whether it's a herbivore or a carnivore, there is no shortage of food**, so animals can grow very big, and of course the habitat of animals on Earth is larger than it is now. An efficient respiratory system may be one of the reasons for the enlargement of dinosaurs We know that dinosaurs are not extinct, and that today's birds are the descendants of dinosaurs, and the poultry we often eat, domestic chickens, belongs to a class of theropod dinosaurs.

If the oxygen level is high, the vertebrate animals like dinosaurs are larger, so why don't we raise chickens in an aerobic environment? Birds spread through their body's air sacs, absorbing and exhaling air, allowing it to pass back and forth through its lungs twice. This respiratory system is more efficient than that of mammals, such as humans.

In addition, this breathing style can also adjust the breathing efficiency relatively actively according to environmental changes, and make better use of oxygen in the environment.

To say a very simple example, the eagles on the plateau can fly at high altitudes with very thin oxygen and nest in the mountains at high altitudes, which shows that their breathing efficiency is very high, so that the low oxygen environment will not affect their size. Our own genes are different! The genes of prehistoric dinosaurs were not as complete as they are now, and the animals of the dinosaur era lacked reproductive genes in their bodies that inhibit cell growth.

Many creatures in ancient times did not have this gene, so their size increased uncontrollably, and the current blue whale does not have this gene. Just like the current crocodiles and dinosaurs belong to the same era, as long as the crocodile does not die, the body cells have been growing, but because of various factors such as temperature, oxygen content, etc., the crocodile is not as big as prehistoric.