Looked like the ancestor of all modern animals?
Source:Do you Know what unites the 99% of currently known living beings, including humans? They all have a feature known as bilateral symmetry — their bodies can be divided into left and right sides, which are virtually identical. In addition, the body of the majority of today's organisms starts with the head and ends, callous as it may sound, the anus. Recently, an international group of scientists found in stone rock, the remains of an ancient animal, which was given the name Ikaria wariootia. It had the shape of a small worm the size of a grain of rice, and also has a bilateral symmetric body with the head, digestive system and anus. The researchers believe that it took from him a large part of today's living organisms.
In the order shown: sea sponge, jellyfish, ctenophore and animal plate
oldest ancestor of animals
Creature called Ikaria wariootia lived about 555 million years ago, in ediacaran period. Then our planet , which lived in water and were almost stationary way of life. But the animal was found, judging by his sophisticated by the standards of those times the building was very active. Its body length ranged from 2 to 7 millimeters, and the width does not exceed 2.5 millimeters. The structure of the body of an ancient slug is symmetrical, moreover, the scientists had found signs of the presence of the mouth, digestive system and anus.
the Ancient slug Ikaria wariootia in the representation of the artist
To Detect traces of so ancient and tiny animal was quite difficult. About its existence, scientists have suspected in the course of studying ancient rocks, located on the territory of modern Australia. The researchers noticed that some fragments of the stones have small holes oval. They were all about the same shape and inside those holes a long time ago clearly somebody was crawling. It turns out that while the other creatures of the ediacaran period motionless on the bottom, slick Ikaria wariootia actively moving muscles and was one of the most active animals of those times.
the Remains of animals that lived hundreds of millions of years ago, it is difficult to detect because of their lack of a hard shell.
Currently, Ikaria wariootia is considered the first animal, the body of which possess bilateral symmetry. Apparently, this structure of organisms has been so successful from an evolutionary point of view, that it was preserved for hundreds of millions of years. Once upon a time this feature went to the first amphibious creatures and then passed on to the dinosaurs, the monkeys and, eventually, even us. As mentioned, today bilateral symmetry have a 99% of living beings on our planet.
Traces of an ancient animal was discovered in one of the rocks of Australia
the search for the remains of ancient animals
This discovery is very important and valuable to the scientific community, because the traces of lived hundreds of millions of years ago animals are discovered by paleontologists very rarely. And the thing is that in those days they did not have time to develop a hard shell. Therefore, scientists often study the remaining ancient times stones, hoping to find in them traces of any organisms. Often, as in the case of Ikaria wariootia, they notice the mink left by the extinct organisms.
In recent years, scientists make many such discoveries. For example, recently in Canada was found the skeleton of fish elpistostege, which became the first in the history of our planet, the owner of these fingers. It is believed that this fish used the fingers to from time to time choose of water to the land. To read more about it in our video, which shows an exterior view of this amazing creation.
as it turns out — the ancestor of bears and many animals is a tiny slug?
Recommended
Can genes create the perfect diet for you?
Diet on genotype can be a way out for many, but it still has a lot of questions Don't know what to do to lose weight? DNA tests promise to help you with this. They will be able to develop the most individual diet, because for this they will use the m...
How many extraterrestrial civilizations can exist nearby?
If aliens exist, why don't we "hear" them? In the 12th episode of Cosmos, which aired on December 14, 1980, co-author and host Carl Sagan introduced viewers to the same equation of astronomer Frank Drake. Using it, he calculated the potential number ...
Why does the most poisonous plant in the world cause severe pain?
The pain caused to humans by the Gimpi-gympie plant can drive him crazy Many people consider Australia a very dangerous place full of poisonous creatures. And this is a perfectly correct idea, because this continent literally wants to kill everyone w...
Related News
Found a way to get rid of complexes about appearance
there are very few people who are completely happy with your appearance. According to statistics, in Russia lives 70% of women and 63% of men who believe in the ugliness of his face and body. But scientists from the Spanish city o...
Why are the wings of some butterflies are painted in the black color?
today, scientists know more than 158 000 species of butterflies, which differ from each other in size of body and wings. The patterns on the wings can consist of a variety of colors, but on the wings of almost any butterfly there ...
The number of worms in raw fish has increased by almost 300 times
Parasitic worms are organisms that are able to penetrate other living beings and to live at their expense. They exist , but recently American scientists were particularly interested in the worms of Anisakis simplex, which are also...
Proven one of the evolutionary theories of Charles Darwin
From the moment in 1859 Charles Darwin published “the Origin of species by means of natural selection”, was 161 year. And although his fundamental work laid the Foundation , one of the main theses of Darwin has not been proven. Th...
Which animal has the fingers grew earlier than the rest?
everyone living on our planet have one thing in common — the presence of fingers on the hands and feet. But these parts of the body necessary for grasping objects and hold the balance, has emerged in animals gradually, in the cour...
Solve the mystery of the mystical "tree of life" in the United States
In the XII century BC when the world was ruled by pharaohs and kings, in the American States of Colorado, Utah, Arizona and new Mexico lived members of the Indian Anasazi culture. They are known for having built a huge Pueblo Boni...
Some people can hear the Earth's magnetic field
Can humans feel magnetic fields? Despite the fantastic nature of the issue, the fact is that a large number of living beings on the planet really know how to “see” and even use it for navigation. What if the same ability is presen...
How meditation can rejuvenate the brain?
the Search for the proverbial elixir of youth that would not only but would retain clear thinking and attractive appearance, can be found in the mountains of Tibet. However, it is a not a bottle of magic liquid, which we all expec...
From whom came the modern chicken and duck?
each modern animal is a distant ancestor, who lived millions of years ago. For example, amphibians are creatures like frogs came from the so-called elpistostege, who first learned to use them. But the ancestor of modern chickens a...
This animal is able to survive the bites of ten Scorpions
Our planet is a dangerous place where you can die from almost anything. For example, in Japan you can , after eating a piece where you can quickly say goodbye to life. And in Brazil everyone is in danger of being bitten by a yello...
How plastic trash affects the health of fish?
We have many times mentioned that our planet literally . Bottles, plastic bags and other plastic products can be seen with the naked eye, but the world is also invisible to us microscopic particles of microplastics. According to t...
Found a place that has not suffered at the hands of man
Reading the news about how the oceans have become , you would think that mankind hurt each corner of the planet . However, recently the staff of the National geographic society found the place where the human hand has still not ar...
Four ways to stop global warming
I Think humanity ever really die. Now many people fear that the cause of our destruction , but we should not forget that humans and all living creatures on the planet could finish . For the first time on a gradual increase in temp...
Found life in one of the most extreme places on the planet
Although life seems pretty rare and fragile system in the Universe, its stability is striking: tiny microorganisms are able to survive in the most extreme places of our planet — many kilometers from the ocean depths, where t...
After 50 years, the Amazon forest can become a desert
Humanity is ruthlessly pollute the air and uprooting of thousands of trees. Ultimately, this leads to the fact that our planet is slowly dying. To see this, it suffices to read the reports of scientists about the state of the envi...
Genes that begin to work after death
it May seem that we know what . At least, I think so. But the simple definition of death, cardiac functioning of the body – does not take into account how really strange our bodies are. As told to Peter noble, former Professor at ...
How to force yourself to love sports?
Probably every adult at least once in life wanted to engage seriously in his health. Only here many of the supporters of a healthy lifestyle sooner or later recognized that physical exercise has ceased to make them happy and fulfi...
Length of the smallest dinosaur was only 5 centimeters
Millions of years ago, our planet was inhabited by dinosaurs, including small, almost defenseless creatures. Recently, an international group of scientists that deals with the study of ancient animals, found the skull of a tiny di...
Why with age, our growth becomes less?
You probably noticed that over time the growth of the elderly becomes less. Signs typically include loss of vision, hearing and memory, and reducing the growth of the unfairly overlooked. Meanwhile, the growth of older people over...
Why the turtles eat plastic debris?
due to the fact that people irresponsibly throw garbage from the Windows of cars, ships and even their homes, our planet is gradually turning into a landfill waste. In 2019, British scientists announced that the deep ocean has tur...
Comments (0)
This article has no comment, be the first!