How many types of life were there in ancient creatures?

And how far back is your antiquity?

The five stages of the earth's evolutionary history, which are represented by organisms, are:

Archean fungi and algaeBirth. The Archean era was the stage when the earth was just formed, and the earth at this time was quite chaotic, and there was no resemblance to the current earth. Not only is there no land, it's all ocean.

It started about 4.6 billion years ago, when the earth was first born, and ended 2.4 billion years ago, which is a long time in between.

Proterozoic prokaryotes formed。The Proterozoic is the second stage of the Earth's evolution, when the Earth had some basic land rudiments. Some relatively simple single-celled organisms gradually began to appear in the ocean, starting from 2.4 billion years ago and ending 800 million years ago, during this time the earth has also undergone earth-shaking changes, prokaryotes have gradually become eukaryotes, and fungi and algae in this era occupy the dominant position on the earth.

Paleozoic vertebrates occupied the earth。During the Paleozoic Era, several major plates of the earth's Eurasian continent basically began to form, algae began to produce in large quantities, and some lower invertebrates gradually occupied the earth, including from the Cambrian Ordovician to the end of the Permian, which may have some different statements, but the general statement is consistent.

Mesozoic dinosaurs ruled the earth。The Mesozoic Era is the Triassic, Jurassic and Cretaceous, which is also an era that everyone is more interested in, in this era all kinds of animals and plants began to be born in large numbers and began to reproduce, and the dinosaurs that everyone is interested in were also born under superior conditions, but eventually became extinct.

Cenozoic species flourish spatially。The Cenozoic era began 65 million years ago, and this era is also divided into the Paleogene and Neogene and Quaternary periods, and various organisms began to develop and progress, and gradually took on a new look, so it is called the Cenozoic Era.

The oldest organisms on the earth should be seaweeds, corals, penstones and trilobites, and the ancient organisms that are still alive on the earth today are not only seaweeds and corals, but also birds that appeared in the Mesozoic Era, amphibians such as turtles and plants ginkgo, cycads and pines and cypresses.

The giant panda is also a national treasure of our country, very cute, and it is reported that pandas have survived on the earth for millions of years in the world.

Human beings are the longest-standing creatures, and they have been around for as long as people can remember, and they are constantly evolving, improving, and improving.

What is the largest living creature on Earth? You may not have heard of it at all!

What terrible creatures have existed on Earth since ancient times?

Opabine.

About 100 million years ago, early animals with hard body parts, such as shells or bones, began to appear. They are still only active in the ocean, and these animals include crustaceans, corals, starfish, sponges, and mollusks. By that time, many kinds of life forms had emerged.

The "**" of this life occurred at the beginning of the Cambrian period. In British Columbia, Canada, scientists have discovered fossils of the Burgess Shale, which give a rough picture of animals from the Cambrian period, which lived in the warm, shallow sea. For the shape of modern life that we are familiar with, there were indeed many strange-looking creatures at that time.

Among them is Opabin, which has five mushroom-shaped eyes and a long, closed "nozzle" that captures prey.

Picha worm, a fossil of a Burgess shale animal, for us. May be especially important. It is the Pika bug, named after the nearby Pika Mountain.

This small worm-like creature has a hard strip that runs through its entire body, and although this is not exactly a spine, it is very similar. It also has flaky muscles arranged in a V-shape, almost identical to those of modern fish. Pikha is probably the earliest ancestor of vertebrates.

Fish, reptiles, birds, and mammals like humans, all belong to the category of vertebrates. Recent fossils found in China suggest that fish with gills but no jaws began swimming in the ocean hundreds of millions of years ago.

Among all the animals in the Cambrian period, the largest and most ** is the 60-centimeter-long flam, and its name means "peculiar shrimp". It has a cloak-like body, two large eyes that grow on pillars, and a pair of pincer-like arms.

Lingcauli worms. sorry

Eshea worm. sorry

Jumping insects: Insecta, Springtail, Springworm family.

Morphological characteristics. Jumping insects are wingless for life, larvae resemble adults, most species are distributed in temperate zones and polar regions, jumping insects are a small wingless insects, the reason why they can jump, is to rely on the belly force of the projectile to reach the ground where they live, and then jump in the air. It can jump forward up to 15 times its length, and when not in use, it can be placed under the gripper below the third abdominal segment, and there is a ventral tube below the first abdominal segment. This type of insect usually has a soft body, no more than six abdominal segments, underdeveloped eyes, and the tibial joints of the feet, the appendages heal into tibial appendages, and the tips have claws, unless there is an enemy approaching or being infestation, and the tips of the claws are often only used to assist in movement, and are harmful to roots, stems, leaves or seedlings on cultivated crops.

Holy clam sorry

Wingworm sorry

Vivasian worm.

The Vivasya Worm is hat-shaped, with two rows of dagger-like "blades".

Hope it helps!