Do microorganisms have fossils? What are paleontological fossils?

Yes. I studied in junior high school and high school.

Scientists have recently published research that the bizarre accumulations in the wild in Western Australia are some of the oldest fossils on Earth, most likely made up of thousands of microorganisms that lived 3 billion years ago.

In this week's issue of the British journal Nature, scientists have reported the most abundant evidence to date that the deposits in Western Australia are the oldest fossils on Earth. In their new view, the scientists argue that these strangely shaped accumulations are not the result of a disorderly accumulation of dirt, but by ancient microorganisms digging and constructing them.

Abigail Warwood, lead author of the study and a researcher at the Australian Centre for Astrobiology, said it was the first truly striking and very straightforward record that these microbes were the progenitors of life. If it is believed that all life originated on planet Earth, then life may have originated from these ancient microorganisms.

Accumulations in the wild in Western Australia have been reported to have different shapes, ranging from egg crates to ocean waves. Known as stromatolites, they have been the subject of research by scientists in the past, but for a long time, the biggest question for scientists was whether they were once rich in life.

Warwood examined thousands of accumulations in his research and classified them into 7 types. Some senior experts, independent of the research group, believe that Warwood's study is the most comprehensive and gives the clearest affirmative answer to date.

Due to glacial movements, crustal changes and other reasons, the earth's organisms were quickly buried underground, and after hundreds of millions of years of evolution, the biological hardware part was preserved. However, the possibility of the evolution of the fleshy soft tissues (including ears and internal organs) into fossils is very small, and it is easy to be corroded and dissolved by microorganisms in the natural environment, so it is difficult to form solid flesh fossils.

The role of fossils in the study of early humans is as follows:

1. Fossils are the main basis for paleontology to determine relative geological age.

2. Fossils are the main basis for paleontological division and comparison of strata.

3. Fossils are paleontologists' window into the world of ancient organisms.

4. Fossils are paleontology that provide direct evidence for the study of the origin and evolution of life.

5. It is a reliable basis for studying and reconstructing paleoenvironment, paleogeography and paleoclimate.

Status of the study:The Earth's "age" is about 4.6 billion years. The Cambrian period is a period of time between 100 million and 100 million years ago.

It is 400 million years earlier than the "Jurassic Period" of the dinosaur era that we are more familiar with. In 1909, the discovery of a fossil group of mid-Cambrian Burgess fauna in Canada caused a sensation in the world, and today it is a scientific site listed by the United Nations.

In 1947, a fossil group of Ediacaran fauna from the end of the Precambrian period was discovered in Australia. The time interval between the two fossil groups is 100 million years, and the sudden changes that occurred between the two species are difficult to prove physically. The Chengjiang fauna fossil group is in the middle of the time span of the above two fossil groups, which is the most important link in the Cambrian explosion of life.

OK. Bacteria are one of the major groups of organisms and belong to the bacterial domain. The notion that bacteria cannot be preserved as fossils is false, and scientists have found similar cyanobacteria in ancient strata dating back 3.5 billion years.

of fossils. Cyanobacteria are larger than most bacteria and are able to secrete a thin layer of cell walls.

On top of that, cyanobacteria are able to form large layered structures, which are known as stromatolites. If this stromatolite is ground into thin sheets of pure limbs, finely preserved fossils of cyanobacteria and algae may be found in it.

I haven't seen it so far, so I don't think anyone has posted it, and your complementary fossil should be very unique and rare.

It has been discovered, because there are many paleontological fossils in the development of our lives, and this kind of thing has been studied.

Yes, because what we can see now is what others have discovered.

A marine invertebrate echinoderm named after its resemblance to a blooming lily. This animal has been thriving in the oceans since the Paleozoic Ordovician 100 million years ago.

The whole of the sea lily is like a lifelike lily living on the bottom of the sea. The "roots" of sea lilies, either in the shape of "anchors" or "curly branches", are fixed to the bottom of the sea; The "stem" of the sea lily is elongated "tubular" with a stem hole in the middle; The "crown" of the sea lily, which is composed of two parts, the "calyx" and the "wrist", is in the shape of a "calyx" and floats at the upper end of the "stem", and the sea lily filters plankton in the seawater through the opening and closing of the "crown". In the chain of biological evolution, sea lily is an important species in the process of evolution from invertebrates to vertebrates, which has both invertebrate characteristics and some characteristics of vertebrates.

Due to the turbulent undercurrents in the depths of the ocean, it is difficult for the sea lily to survive in one place after death; And because the sea lily only has spiny skin and no hard bones, it is perishable after death and it is extremely difficult to preserve it for a long time. Therefore, the fossils of Shanghai lilies are extremely rare in the world.

Ancient creatures were catacchied, buried, climate, humidity and other factors, after a long period of age and suitable elements nourished to form fossils or jade?

Paleontological fossils are the remains of paleontology, relics or relics that remain in rocks, most commonly bones and shells. Fossils, the remains, relics, or relics of ancient creatures that are buried in the ground and become stone-like things. Studying fossils can help understand the evolution of living animals and help determine the age of strata.

The remains of ancient animals or plants preserved in rocks in the earth's crust, or evidence of the existence of human remains, are called fossils. Fossils have been found from ancient times to the present. To put it simply, a fossil is a stone that turns the remains or remains of a creature that lived in the distant past into stone.

In the long geological ages, there have been countless creatures living on the earth, and many of the remains of these creatures after death or the traces left by life have been buried by the sediment of the time. In the years that followed, the organic matter in the remains of these creatures was decomposed, and the hard parts such as the shells, bones, branches and leaves, along with the surrounding sediment, were petrified and turned into stone, but their original form, structure (and even some subtle internal structures) remained; In the same way, the traces left by those creatures when they lived can be preserved in this way. We call these petrified biological remains and relics fossils.

From the fossils, you can see the appearance of ancient animals and plants, so that you can infer the living conditions and living environment of ancient animals and plants, you can infer the age of the formation of the strata where the fossils are buried and the changes they have undergone, and you can see the changes of organisms from ancient times to the present, and so on. Fossils include trilobite fossils, plant fossils, shell fossils, footprint fossils, dinosaur fossils, fish fossils, etc.

In layman's terms, a fossil is a stone that turns the remains or remains of a creature that lived in the distant past. In the long geological time, there have been countless creatures living on the earth, and the remains or traces of life of these creatures after death are left, and many of them have been buried by the sediment of the time. In the years that followed, the organic matter in the remains of these organisms was decomposed, and the hard parts such as shells, bones, branches and leaves, along with the surrounding sediment, were petrified and turned into stone, but their original form, structure (and even some subtle internal structures) remained; In the same way, the traces left by those creatures when they lived can be preserved in this way.

We call these petrified biological remains and relics fossils. Through the study of fossils, scientists can gradually understand the form, structure, and types of organisms in the distant past, can infer the process of the origin, evolution, and development of organisms over hundreds of millions of years, and can also restore the ecological environment of the earth at various stages of the long geological history.

When I was a child, I heard the elderly say that there was a keel near my home, and later with the commercialization of fossils more than ten years ago, I also followed the trend to carefully observe the so-called keel of the ancient legend, and found that it has a lot of holes like insects bitten, and from this end to that end, the entire hole is filled with stones of different colors, forming a completely different color difference from the so-called keel stone itself, I am very strange, and many elderly people are also curious, because the stone cannot have insect eyes, and there are irregular rings like tree patterns on the keel. Strangely enough, the stone itself joins the carbon to form a stone and a charcoal, but the elderly can't explain why. Through the knowledge of computer books, I finally determined that the ancient trees were eaten by insects, died, burned by lightning and buried in the ground for hundreds of millions of years. I'm glad that so far, I haven't seen any tree fossils on the Internet that have insect eyes, wood grains, and coke, so I can say that my collection is truly unique!

There are fossils, there is no space for these useless things, it is better to abandon the wilderness.

Bacterial smirks can also be preserved as fossils. The most typical bacterial biochemical nanomorphic stone is stromatolite.

Stromatolites are mainly stromatolites formed by the mineral deposition and cementation caused by the periodic life milling activities of prokaryotes (including cyanobacteria, photosynthetic bacteria and other microorganisms). Stromatolites represent the oldest and most primitive microbial ecosystem on Earth.

The oldest stromatolites date back to the Early Archean 3.5 billion years ago.

The oldest fossils of prokaryotes have been found in the 3.5 billion-year-old siliceous stromatolites of the Waraunna Group in Western Australia. To date, stromatolites have been found in Archean sedimentary rocks more than 2.5 billion years old at more than a dozen sites in Australia, North America and South Africa; The proterozoic stromatolites are more widely distributed, and almost all proterozoic carbonate deposits worldwide produce a rich variety of stromatolites. Many stromatolites have also been found in our country.

Stromatolites (fossils of ancient microbial communities).

Modern bacteria are extremely widespread and ubiquitous. In the past, only Mesozoic and Cenozoic sediments were known to have preserved fossils of micrococci and bacillus. In the past 10 years, transmission electron microscopy (TEM) and biochemical techniques have been used to find bacterial fossils in the Paleozoic and Precambrian sediments.