In the Cambrian Ocean about 530 million years ago, there lived a super fierce carnivore. Although Qixia is called Qixia, it is not a real shrimp. As early as 1886, when some paleontologists discovered a small part of his fossils, they described him as an arthropod without a head but facing down. Some parts look like our modern knights, but they look strange. Later, in 1892, a Canadian paleontologist named it subordinate. It was the top predator of that period, only one year before the dinosaur era.

Qijia is not just a species. At present, it has been found that there are more than a dozen families, at least 20 kinds. The length of Qijia in Canada is about one meter, which is far from other prehistoric behemoths such as dinosaurs and black dragons. Many people are surprised. With such a size and weight, why did they still dominate the ocean at that time? You may not know that in the Cambrian ocean at that time, other animals were only a few centimeters to a dozen centimeters in size, so put them in front. Its Big Mac is big enough to make it the fiercest predator. There are two huge claws in front of its mouth, which are covered with many barbs, so that its prey cannot escape its claws. Its most striking feature is a pair of big eyes, which is a special structure.

During the CAMBRIAN period, many creatures had no glasses, and their eyes were on the patties on the side of their heads. They have compound eyes similar to modern insects, and each eye has at least 65,438+06,000 hexagonal lenses. This advantage has greatly helped its eyesight, and it is easier to observe the movements of its prey when hunting. So at that time, many marine creatures gradually evolved crustaceans to arm themselves. Because the body can't keep up, many chivalrous prey have to rely on equipment to defend themselves. Some people think that it usually feeds on trilobites, and many trilobites have found many bite marks. However, many experts questioned it because trilobites were not found in its fecal fossils. However, even such an early ocean overlord could not escape the extinction of nature. More than 440 million years ago, Qijia bid farewell to its hegemony forever. A law that nature always abides by is called natural selection and survival of the fittest.

With the appearance of other large carnivores, it will face unprecedented competition and food will be increasingly scarce. In the process of evolution, its scale will gradually become smaller, and a generation of hegemons will gradually decline, unable to keep up with the evolution of the times. In addition, the environment at that time may also change. Under multiple pressures, it will disappear into the ocean forever, and new rulers will appear, the most famous of which is the upcoming Cornerstone.