Dunn's Fish
A large paleontologist living during the Paleozoic Devonian period (about 360 million to 430 million years ago), with a body length of about 11 meters, a weight of up to 6 tons, and a bite force of up to 5 tons, it is regarded as the largest (marine) predator in the Devonian era, and the largest carnivorous teleost fish that appeared during the Cambrian to Devonian period, and its main prey is fish with hard shell protection and invertebrates, which was the top predator at that time. The Dunn's fish lived in shallower waters and had an unusually strong appetite, making it the strongest carnivore of its time. The main food is sharks, bony fish, trilobites, ammonites, nautilus, shield fish and so on. They also eat their own kind when there is no food. Ancient sharks, cephalopods (nautus, ammonites), and even their own kind are all part of its diet. The Dunn's fish, which has such a strong appetite, has been suffering from indigestion, and around the fossils found, it is often possible to find the remains of some discarded, semi-digested fish. At the same time, some indigestible food residues from the stomach of Dunn's fish can also be found, such as the head beetle of other shield fish and the calcium carbonate shell of mollusks.
Broad-winged horseshoe crab
Broad-winged horseshoe crab suborder , with a body length of about 2 m , is similar in length to alligators. Aggressive, but gradually reduced by eating its own eggs, it is often fed by the Nautilus. Lived about 430 million years ago. Living near estuaries and deltas, it is a fearsome carnivore and a social animal, with some species having two huge pincers evolved from their second pair of feet to attack targets, with sharp claws that can catch a slippery fish. And the whole body is covered with thick exoskeleton formation of armor to protect the body. Broad-winged horseshoe crabs have a pair of compound eyes and a pair of so-called one-eyed small eyes. The third and fourth pairs of feet are used for walking, and the fifth pair of feet is used for swimming. Due to the evolutionary evolution of the legs of the broad-winged horseshoe crab to become very thick, some species have the ability to move on land. Fossil studies have shown that some of these species have evolved a second set of gills in addition to their original gills, which are used to breathe oxygen in the air, thus having the conditions for landing on land and carrying out amphibious living conditions. Broad-winged horseshoe crabs once lived in large numbers in today's New York State. In 1984 , the broad-winged horseshoe crab was selected as an official specimen of the State of New York.
Chloron
Also known as Colossus or Diplodocus , it was a marine reptile belonging to the suborder Plesiosaurs , a suborder of Plesiosaurs , whose distinctive features were short , thick necks. Kronosaurus is named after Kronos, the titan god of Greek mythology. Cruosaurus got its name from the Titan of Greek mythology, the ruler of the universe, Kronos. Plesiosaur, a kind of marine reptile, is a branch of the Plesiosaurus, and the Plesiosaurus is a branch, but unlike Plesiosaur, Plesiosaur in the evolution process, the neck is greatly shortened, and the length and volume are also significantly reduced, so compared with Plesiosaur, the speed of movement of Plesiosaurus is getting faster and faster, and the way of movement is more complex. Cruosaurus lived 120 million years ago (early Cretaceous) and was a plesiosaur with a short neck (pictured). The neck bone has only 12 pieces and the body length is 9-10 meters. Its mouth is almost as long as its head! Marine reptiles, with flattened forelimbs and fin-like, no hind limbs, are used to paddle forward or control the direction of progress, and are compact and conducive to rapid swimming. The nostrils are located on the top of the head and allow you to breathe in deep water.
Vampire fish
They're not big, and they're not pretty, but they're very peculiar. With vampire-like fangs on its upper and lower jaws, this small fish, which is only one of more than 3,700 species of carp, has fangs, and the large teeth of the male come in handy when fighting for territory. Ralf Britz, a fish research expert at the National History Museum in London, said: "The reason this discovery is so surprising is that cyprinids evolved to disappear tooth structures 0.5 billion years ago. "Why did this small fish still retain its tooth structure over its evolutionary journey?" After further analysis, the scientists concluded that this vampire-tooth-like structure is not a tooth, but a bone, or more accurately a by-product of the jawbone, that pierces the skin and grows to form a curved, pointed structure. Its jaw can be opened at a large angle, 45-60 degrees to the main trunk of the body. By comparing the DNA of vampire fish with zebrafish and cyprinids, Breitz assessed that this skeletal protrusion was gradually formed after carp evolved to lose teeth 0.3 billion years ago. Vampire fish do not use this peculiar tooth for predation, and in terms of body structure the male also has a large ventral fin and facing anus, and the reproductive organs are located between the fins.
earwig
Aphids are insects of the order Gramoptera. The head is flat and wide, and the compound eye is small without one eye; The antennae are filamentous, generally consisting of 25 segments; Mouthpiece chewing type. The worm body is 10-16 mm long and 2-2 mm wide. 5 mm, narrow and flattened body shape, the thorax is nearly square, the abdomen has a total of nine segments, the appearance is dark brown, shiny. Adult forewings are short, truncated, leathery without veins, and missing hindwings; The gluteal plate is larger, the caudal segment is smaller, and the posterior part of the dorsal plate of the anterior thorax is not narrow; The posterior part of the mid-thoracic dorsal plate is truncated. The three pairs of feet are similar, the tarsal segment is three segments, the end of the abdomen has a pair of unsected tail whiskers, which are hard iron, generally the tail of the male insect is longer than that of the female, and the tail mustache has a tooth on the inside of the whisker, once alarmed, crawling quickly, sneaking into the soil crack or brick weed, is an omnivorous insect. Nearly 2,000 species are known in the world, mostly in the tropics and subtropics, and the number of species from temperate to cold zones is decreasing, but they are also found in the mountains of the Himalayas at an altitude of 5,000 meters. Main geographical distribution in China: Beijing, Hubei, Hebei, Shandong, Shanxi, Henan, Shaanxi, Jiangsu, Anhui, Tibet, Xinjiang. There are 211 species recorded in China. There are 10 families and more than 1,000 species in the world, 42 species are known in Taiwan, and the common species are about 10 to 25 mm long, but no Chinese people are engaged in related taxonomic research.
mankind
The general term for people. Human beings are the crystallization of the highest animals and wisdom on the earth, with two sides of good and evil, just so-called: good and evil are only between one thought, and they are also the highest form of material movement, and they are currently in the position of rulers of all species. Man can also be defined in terms of biological, spiritual and cultural dimensions, or a combination of these levels. Biologically, humans are classified as humanoids, human genera, and human races, a higher animal. On a spiritual level, man is described as capable of using the concept of various souls, which in religion are thought to be associated with divine power or spiritual immortality. People: "Can make exquisite tools, and can skillfully use tools for labor, have a wealth of thinking skills, have the ability to judge that there is no conflict with the actual situation and conflict with the actual situation, have the ability to care for and love the earth, have the ability to create and control and repair." Evolutionary studies have suggested that humans originated from forest apes, developing step by step from primates through a long evolutionary process. DNA and fossils prove that humans originated in Africa about 2 million years ago. Compared to other animals, humans have highly developed brains, complex abstract thinking, language, self-awareness, and problem-solving skills. The erect body structure of the human body allowed the human forelimbs to move freely, which allowed intelligent humans to master the ability to use tools far beyond any other species, and eventually developed a strong labor ability and creativity.