Regarding the origin of humans, there is unanimous agreement that humans and chimpanzees are the same ancestor because our genetic similarity is as high as 99%. Indeed, about 4.5 million years ago, we and our chimpanzee ancestors lived together in the forest, but as we evolved, each evolved in a different direction. This infers that our ancestors belonged to primates.
Thinking about it further, who are the ancestors of primates? According to scientists, it may be a Mesozoic mammal. The ancestors of mammals were psychic reptiles. The ancestors of reptiles were amphibians, and the ancestors of amphibians were fish.
Along the evolutionary line, tracing back to the roots, our human ancestors were fish? As soon as this statement was exposed, it immediately caused a lot of people to talk about it, saying that which point of ours is similar to fish, how can we say that man evolved from fish? But if you think about it, why do newborn babies swim? Why does our eyes taste salty?
Before that, let's first understand how life on Earth came from scratch. It is said that at the time of the birth of the earth, it was desolate and desolate, and there was no other substance except mud and rock.
About 3.5 billion years ago, the earliest life, the single-celled organism , cyanobacteria , was born in the ocean. Later, 650 million years ago, multicellular organisms gradually evolved. Until the Cambrian period 550 million years ago, there was a prosperous scene of "a hundred flowers blooming" in the ocean, including the familiar trilobites, cheering insects, and strange shrimp. At that time, the number of species was as high as 2 million, which included not only chordates but also invertebrates.
Since then, fish creatures have taken the stage of history, ranging from jawless fish to Ordovician jawfish. It is said that our human jaws evolved from primitive jawed fish.
In the late mud basin, the fins of some fish that survived on land evolved limbs, and fish drifts also evolved the initial structure of the lungs, and since then aquatic animals have gradually evolved into terrestrial animals.
Evidence was that in 2006, biologists discovered a fish that was no different from the common fish, with gills, scales, and other body structures. At the same time, scientists have also found bones and joints hidden in the fins of the fish. This also fully illustrates the shift of marine fish to terrestrial life.
For example, the finfish left the water 380 million years ago to enter the land, and since then the earth has entered the amphibian era, starting the evolutionary journey of terrestrial vertebrates.
65 million years ago, an asteroid hit Earth, giving life a devastating effect. But at the same time, mammals also began the course of history, such as the oldest mammal today, the platypus, which can lay eggs and breastfeed.
Primates also appeared on Earth 60 million years ago. By 13 million years ago, ancient ape species also appeared.
7 million years ago, chimpanzees had a disagreement with their ancestors, and since then humans have evolved to become the most advanced animals on earth.
All in all, it is possible that the ancestors of humans were fish. Some people suspect that this is just the speculation of scientists, and it is not possible to be arrogant until there is conclusive evidence.
The ancestors of human beings evolved from fish, and this statement is not nonsense. Because in 2019, China found a fish fossil near the Hong'an Border City in Xiushan, Chongqing, known as the "Pocket Border City Fish".
Scientists have found that it has mandibular and mandibular teeth, and the jawbone at the edge of the mandibular is very similar to the edge jaw of the whole jaw, and the arrangement of the five teeth is very similar to that of the shield fish. Therefore, scientists show that its discovery will be an important basis for the evolution of fish into adults.
In fact, as early as 2010, biologists also found a fossil tetrapod. It lived 380 million years ago and looks no different from a fish, but the hidden bones inside the body are wrapped in the fins of the fish, which already have the characteristics of flesh fin fish and quadrupeds.
This evidence suggests that our human hands and feet may also have evolved from fins.
What are some of our human body parts similar to fish? Most people think we have nothing to do with fish. However, if you look closely, you will still find some clues.
We have an ear hole in our ear, which is called a deaf tube. It is said to be equivalent to the gills of a fish, which can breathe freely in the water. It's just that some people have it, some people don't, why is that? Experts explain that evolutionary choice. The earliest ancestors of mankind moved from the ocean to the land, we know that in the ocean it is necessary to rely on the gills to breathe, and when we get to the land, we do not need to breathe on the gills, but give it to other parts of our body such as skin and lungs.
There is also our recurrent laryngeal nerve and vas deferens, which have some traces left by fish.
The evolution of living things has evolved step by step, from the earliest fish organisms to amphibians to reptiles, and finally to mammals, each stage has its own growth process. Where do humans come from? Tracing back to the source, it may be fish.
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