Since modern times, there has always been a relatively big controversy about the origin of humans and even other species, and there have been endless debates about the way in which humans were born and their original form. Now, through Darwin’s theory of evolution, we understand that all species on earth are derived from environmental screening and continuous evolution, which means that in the ancient times, every creature could find its own ancestor. Nowadays, we usually think that human beings evolved from ancient apes, so what kind of evolutionary process did we go through if we go forward?
Scientists have confirmed that: humans have evolved from fish, and they have also provided actual evidence
When the earth was first formed, the environment was also very harsh. At that time, the largest area on the earth was the ocean, and the rest were mountains and forests. Studies have shown that initially the ocean is the best place to nurture life. There is an evolutionary chain in biology, that is, mammals are derived from reptiles, and reptiles are derived from amphibians, but amphibians are originally from the ocean. In this way, we can draw a conclusion that human beings actually evolved from fish. Is there a more solid conclusion to prove this?
Many people don’t believe that as soon as this statement is put forward, they think that today’s humans have evolved into such intelligent higher creatures, and they can’t even accept that they evolved from primates in the past, let alone let them accept that humans are It comes from fish. However, this statement actually has a certain basis, let’s take a look at the specific evolution process together. First of all, there is such a very clear evidence. We all know that humans are spine animals, and the common feature for vertebrates is that there are certain spine bones that penetrate the whole body, which can play a supporting role. It can also make the body more rigid and flexible. The smallest vertebrate is the prehistoric fish.
Studies have found that the Haikou fish living in Yunnan, my country, is the earliest vertebrate found in the world. Its specimens were discovered in the early Cambrian strata before 5.21. At that time, Cambrian life exploded and many species were produced, and Haikou fish lived in that era. At the same time, we are also very clear that many organisms originated from the ocean at the beginning of the earth, and through continuous evolution, then this conclusion can be well supported.
In the Devonian era 290 million years ago, the development of fish was very vigorous at this time, and many fish slowly entered the freshwater environment. At the same time, due to the drought, crustal movement and other conditions, the water source gradually disappeared. Therefore, in order to better survive and multiply, a group of meat, poultry and fish began to bravely land on land and began a long road to survival. , And this is also one of the major events in the history of the development of life on earth. After these fish enter the land, they rely on their fins to support their bodies to walk, and continue to exercise, and slowly evolve into four-legged fish with limbs, and their original swim bladder has also evolved into a kind of lungs. structure.
When they first entered the land, they could not fully adapt to this environment, and some actions such as spawning still needed to be done in the water. However, after continuous exercise, they slowly become amphibians, which is also a very significant progress. The birth of many amphibians is also considered an important basis for the evolution of fish to reptiles. In 2006, biologists discovered an ancient fish called Tiktaalik, which has a very typical fish structure. However, further research found that there are some bone joints in the fins. structure. Biologists believe that such structures can allow them to crawl on land, which also provides an important basis for the evolution of marine fish into terrestrial spines. Scientists believe that it is the result of humans and other terrestrial animals. ancestor.
The initial reproduction process of these amphibians is still very restricted. Eventually, their reproduction methods have changed until the appearance of amniotic membrane animals. Amniotic membrane is formed outside the eggs, which can play a very good protective role, and this kind of evolution And changes can also slowly adapt them to the wider continental environment, so these amphibians began to slowly evolve into reptiles. From this we can draw a conclusion that humans came from evolution and came from finfish. And now, people have discovered that human embryos will have fish-like body structures in the early stages, and their limbs will grow like fish fins and tails, but they will slowly degenerate later. These may indicate that the evolution of fish and humans is inseparable. Relationship.
We can also find that the process of evolution is actually very complicated. In the evolution of humans and other animals, there will always be many difficulties, and if there is a slight deviation in a certain link, many biological populations may not exist.