What is the ancient animal of the 300 million year old calendar

The oldest surviving animal in the world (only more than 300 million years old is listed).

1. Coelacanth.

Coelacanths are fishes of the order Coelacantha that contain the oldest submandibular phylum branches. The coelacanth species is thought to have been completely extinct at least 65 million years ago at the end of the Cretaceous period. This idea was only shattered in 1938 after the discovery of speartail fish in South Africa.

The two extant species of speartail fish are therefore also known as living fossils.

Most people think that this 100-million-year-old fish is long extinct. There was only one sighting reported in 1938 ......Until the last 10 years, when fishermen kept discovering them.

2. Lamprey.

Now this creature is straight from your nightmares. As you can imagine, they use these terrible teeth to attach themselves to the fish to suck out blood. They have been living here for about 100 million years.

3. Horseshoe crab. <>

These creepy little creatures in the sea are a common sight at many beaches across the country. They are the oldest animals and have lived for hundreds of millions of years.

4. Sponge (phylum pores).

Sponges can even be traced back to the first non-microbes on Earth, where they existed hundreds of millions of years ago.

Sponges belong to the phylum Porous Animals, which are primitive multicellular organisms, also known as Sponges, and are generally called sponges. Sponges are now considered to be the most primitive and lowestly aquatic multicellular animals, as they possess almost all the basic animal characteristics.

5. Jellyfish. <>

No one likes jellyfish, but they don't seem to care. For the past 100 million years, these fearsome cnidarians have infested the Earth's oceans.

Now do you know what is the oldest living animal in the world? There may be even more ancient creatures waiting to be discovered, such as in the deep sea, where the most mysterious places are also difficult for humans to explore, and perhaps there are even more strange life forms waiting to be discovered.

Archaeologists have found the oldest animal statues or 10,000 years old.

According to the existing biological fossils, the earliest animal is the trilobite population, and whether there is an earlier one is not really whether it will be found in the future!

The nautilus is the oldest living animal, with a history of 3.5 billion years, and there are only four species left, which is known as the "living fossil".

Since 1984, Mr. Hou Xianguang of the Nanjing Institute of Geology and Paleontology of the Chinese Academy of Sciences discovered the fossil of "Naluo worm" in Maotian Mountain, revealing to mankind the early Cambrian world that had been sleeping for hundreds of millions of years. Entering the conch-shaped Maotianshan Institute of Paleontology, we feel as if we have traveled through time and space, and come to the ancient world where prehistoric creatures lived. The entire exhibition hall is decorated in blue, the curtain wall depicts the Cambrian ocean and ancient creatures of that time, and the glass array cabinet displays various paleontological fossils excavated in Maotian Mountain.

Looking through the magnifying glass on the array cabinet, we can clearly see the traces of these prehistoric lives, which make our imaginations swell rapidly. 1. Paleontology Research Station (2 pieces) There is a peculiar building in the middle of the Maotian Mountain in Chengjiang, which is the field workstation of the Nanjing Institute of Paleontology of the Chinese Academy of Sciences. Its design is inspired by the Cinderella insect, a Cambrian creature found on the Maotian Mountain.

The exhibition hall uses a variety of display methods such as sound, light, and electricity, making people feel as if they have entered the marine world, and the fossil bodies are lifelike, and under the gaze of people, these animals that existed hundreds of millions of years ago seem to be resurrected and displayed. 2.The world's earliest human ancestor fossil - Yunnan insect fossil (1 piece) Among the animal fossil groups in Chengjiang, there is the world's oldest chordate - "Yunnan insect".

Yunnan insect is a scientific research fossil that shocked the world, according to scientists, Yunnan insect body length is about 3 5 cm, black, body movement by muscle contraction to make the body produce waves to swim. The blood circulation is an inner ring, and breathing is carried out by gills. Although its form is not pretty, it is the ancestor of all reptiles, mammals, the ancestor of humans, and the earliest "inhabitants" of the earth.

3.The Cambrian giant of the sea, known as the "Tyrannosaurus rex" of the ocean at that time, was 2 meters long and had two amazing claws, and whenever it swam in the ocean, other animals scattered for their lives. Don't underestimate its 2-meter length, in the marine environment at that time, it was able to support such a large animal, which shows the richness and diversity of flora and fauna.

From the point of view of time, it seems that it is not accurate to call the Tyrannosaurus rex "marine Tyrannosaurus rex", because it is 400 million years earlier than the time when the Tyrannosaurus rex appeared in the stage of life, so it should be more appropriate to call the Tyrannosaurus rex "terrestrial Tyrannosaurus rex". Interestingly, it took a whole century for people to learn about the odd shrimp.

The peach blossom jellyfish, which was first born 100 million years ago, is still the most primitive and lowest-class invertebrate on the earth.

The peach blossom jellyfish was first born 100 million years ago.

The most mysterious and magical "three-eyed dinosaur shrimp" is the oldest living animal on earth.

Coelacanths, the ancestors of vertebrates, appeared in front of 100 million people, and fossils exist from the end of the Permian to the end of the Jurassic period....Well, it was the first heroes to land, which still exists and is extremely rare.

The bay crocodile is one of the oldest animals in the world and is known as a "living fossil". As early as 140 million years ago, in the Cretaceous period, the bay crocodile lived silently all over the earth. Today, they still live tenaciously in the coastal areas of Southeast Asia, Australia, the Gulf of Carpentalia, the Gulf of Papua, Bismarck, etc.

In every year. During the breeding season of bay crocodiles in June and July, there are many huge bay crocodile heads on the water surface of some of the above-mentioned bays, which are like "sorghum stubble" in the sorghum fields in our northeast region. Among them, 6 8 meters long abound.

It seems to be seaweed, 200 million years after the birth of the earth.

I don't have the details of him, but you're right"most", I say paramecium.

Cyanobacteria are the earliest, but is that an animal?

To tell you very simply, single-celled animals.

The peach blossom jellyfish, the most primitive and lowest invertebrate on earth, was first born 100 million years ago.

Cyanobacteria were identified as the oldest organisms, and sponges were identified as the oldest first non-microorganisms.

There are also starfish history version of the octopus those cephalopods.

The right animals are also relatively early. The earliest amphibians were named ichthythyosaurus and echinosaurus newt. On land, it's Xiaoqiang, which already existed in the Silurian period 400 million years ago.

The most primitive mammalian ancestor was the lidontodon, and Spinosaurus longioptylum predates the dinosaurs. The original inbred or something. The earliest birds should be Archaeopteryx, Confucius, and Liaoning.

The first humans were hominids about 5 million years ago... Seek adoption.

Earlier there was the Nautilus, which already existed in the Cambrian period.

I remember what kind of salamander (probably this is the word), a creature that predates the dinosaurs, an amphibian.

However, in terms of biological evolution, shrimp and jellyfish are more likely.

Ha ha! Peach blossom jellyfish, of course! The most primitive and lowest invertebrates on earth were first born 100 million years ago.

I think it should be some kind of fish. Because fish - amphibians--- reptiles--- birds and mammals.

Most likely zooplankton.

Cockroach. Earlier than dinosaurs appeared. It has been proven to have existed for 350 million years.

The path of evolution is From water to land, from simple to complex, two years ago, a live speartail fish was discovered, and it was an inner fish species that did not land, and its close relatives landed and evolved salamanders, thus creating the entire continental civilization, and they did not land, and they did not evolve, and they have lived for so many years, and there are two specimens in our country, both of which were gifted, and because there were no scientists' expectations, it caused a sensation when it was discovered, and it was hailed as the first living fossil of living organisms, although it has not been confirmed, but I think it is the earliest.

Crocodiles, of course, crocodiles are known as living fossils.

It should be some kind of virus, because viruses are the simplest.

Fungi, or bugs.

It's cockroaches, and they existed 200 million years ago.