We are in a large group of colorful people, wings are difficult to fly, in the chaos of every inch, about to be caught, become the turtle in the urn, suddenly we were surprised to find that the color of the Kanas Lake behind began to change, into a blood-red piece, and then the wind is everywhere, the waves are thousands of acres, the wind and clouds on the lake are surging, the sky and the earth change color, looking at the Kanas Lake waves surging as if to turn over, everyone is forgetful, completely stunned by the scene in front of them, we are also stunned, completely confused about the situation, I suddenly remembered with enlightenment, God, it is the legendary Kanas Lake monster is coming？

Sure enough, a black spot in the distance of the lake is moving rapidly, like a rocket lightning speed towards our side, those colorful bad guys are in chaos, some of the people on the periphery of the team have already taken advantage of their leader's unpreparedness, have already fled, slipped away, the team is also panicked, chaotic, those bosses still pretend to be calm, disapprovingly said what to be afraid of, don't run around, it's not good if the formation is broken, anyway, they won't charge into battle at that time, of course, it doesn't hurt to sit and talk。 We were surrounded by those people, and we couldn't run away if we wanted to, so we had no choice but to stare at the lake.

In a few seconds, the black dot was much closer, much larger, and we vaguely saw its huge little head peeking out of the lake, and then a pair of big eyes that shone like buckets with a ghostly green light, and a slender neck that was longer than the neck of a giraffe, and the people on the shore couldn't help but cry out in horror, but the boss wouldn't let them go, and they looked at the huge monster in trembling, and stood there helplessly.

Xiao Fei was extremely surprised and said: "No, it turns out that the monster of Kanas Lake is actually this plesiosaur, this is an incomparably precious dinosaur that has become extinct, and even the remains of plesiosaurs left in the world are very rare, and there are only 10 complete or partial plesiosaur remains fossils known in the world." But our luck today is really good, we actually saw a living snake dragon, I didn't expect them to still exist at the bottom of this lake, it is really eye-opening, I feel incredible. It turned out that it had been boiling and making trouble for a long time, and it turned out that the plesiosaur had made a ghost. Because of the lake, the biosphere in the depths of the ocean is relatively stable than the continent, and the dark environment that is silent in the deepest part of the seabed is impossible to explore completely with the strength of modern science and technology, and the prehistoric impact on the continent has led to the near-extinction of large primitive creatures, but these places can be used by some marine creatures to escape the disaster, speartail fish, moray eels, swordnose sharks, silver sharks and other ancient prehistoric living fossils are still visible, and the existence of marine dinosaurs that survived 70 million years ago is not impossible. Nowadays, there are many unknown large creatures such as sea snakes in lakes or oceans with underground rivers, so some scientists believe that the sea monster in the recent sightings may be plesiosaurs, a long-necked reptile that lived in the age of dinosaurs, and perhaps the sea monsters in the sightings are a small number of individuals that have survived to this day. The exploration of the mysterious ocean also depends on the development of technology, and more and more plesiosaurs will reappear in our field of vision in the future. ”

Hu Jiaojiao asked curiously: "Brother Xiaofei, what is a plesiosaur?" It turns out that there is such a thing as a dragon, I always thought it was fake, no wonder the emperor is called the real dragon emperor, it is true that the emperor is the largest in the country." By the way, what does it look like, it's too far away to see clearly, and what is a dinosaur, why have I never heard of this term?"

I can't help but say no, your mind is full of grass, even so simple, as we all know, women and children know that dinosaurs don't know, really long hair, short knowledge, suddenly remembered that she was an ancient man a thousand years ago, can not be with her general knowledge, so good as a teacher, concise, a serious said, how to say, dinosaurs are far away from us, hundreds of millions of years, no one has seen them before, because they are dead, but today we are really eye-opening, in fact, in the Mesozoic Era, they are the overlords of the earth, whether there are flying in the sky, running on the ground, swimming in the water, can not escape the domination of dinosaurs, flying dragons in the sky, pterosaurs, flying in the sky generally feed on aquatic plants and fish and shrimp, vegetarian and omnivorous. There are long-necked sauropods running on the ground, vegetarian social dinosaurs, and huge physiques, like the dragon of the Yellow River in Ruyang, which has applied for the Guinness Book of Records. Another category of theropods running on the ground, mainly omnivorous and carnivorous, many of them live alone, like tyrannosaurs; this category further evolved into birds, that is, the ancestors of birds, especially in the Rehe biota of western Liaoning, the small theropod hairy dinosaur tail feather dragon, and the discovery of the Chinese dragon bird are all important discoveries published in nature, which are direct evidence that birds originated from dinosaurs, and have basically been recognized by the academic community, of course, there must be a small number of academic circles who disagree, especially the West questioning Darwinian evolutionists. Finally, let's talk about swimming in the water, this kind of fossils found in the Guanling biota of Guizhou are more famous, Guizhou dragon, mainly in the shallow sea environment, the shallow sea environment is widely developed sea lily fossils, but also the main food of dinosaurs, and Guizhou dragon also needs oxygen to breathe. However, there are whales in the sea, which are mammals, and their ancestors were mammals that entered the sea, but their ancestors were not dinosaurs swimming in the water. The ancestors of whales are another area of modern biological research, and are no longer the domain of vertebrate paleontology in geology. “

Hu Jiaojiao was confused, she didn't understand at all, she nodded as if she didn't understand, but for an ancient person who had never been in contact with modern science, she was already a good person, and she could be regarded as a leader and elite among the ancients.

Xiao Fei is also like me, a good teacher, so he hurriedly grabbed in front of me and couldn't wait, and said in a beaming voice: "This marine amphibian has a slender long neck and a slender tail, four huge broad fins, razor-like sharp teeth, and lives by preying on other marine animals. Plesiosaurs lived about 150 million to 200 million years ago, when it was the Jurassic era, plesiosaurs are the extinct plesiosaurs of the genus marine reptiles, belonging to the subclass Finnosaurs, is a group of groups adapted to live in shallow water environments, the individuals are large, and the neck is long, hence the name. It began to appear from the late Triassic and spread all over the world by the Jurassic, and became extinct at the end of the Cretaceous. The plesiosaur was a large reptile of the sea, which included marine crocodiles, ichthyosaurs, and dragons. They evolved from terrestrial organisms and then returned to live in the ocean. These mesomorphic reptiles lived from the Triassic to the Late Cretaceous. Paleontologists disagree on how Plesiosaur relates with other marine species. Since the Triassic, it has been the overlord of the ocean, its body size is extremely large, and its body length has also changed! It belongs to the reptile subclass Tonhole, which is a group adapted to life in shallow water environment, which began to appear in the late Triassic and has spread all over the world in the Jurassic, and was extinct at the end of the Cretaceous period. Plesiosaurs is a collective name for the extinct marine reptiles of the genus Plesiosaurs, which belong to the order Pinnilosaurs of the subclass Plesiosaurs. The specimen is large and has a long neck, hence the name. The overlord of the oceans, plesiosaurs, along with ichthyosaurs, ruled the oceans of the Mesozoic Era. It is about 4.5 meters (m) long, with a broad, flattened body, a short tail, and a long, curved neck. The nostrils are far behind. Located near the eyes, the palate is almost hard, with long tines. It is likely to feed through schools of fish by swinging its head, apparently using its radial feet, swimming forward or backward, and even spinning sideways with its body as its axis. In the early part of its evolutionary history, it was divided into two main groups: the short-necked type of the upper dragon, with a short neck and a slender head, and the thin-sliced dragon, with a small head and a long snake-like neck, which could be greatly curved. Later evolution was marked by an extreme increase in volume. The genus Kronosaurus is an Early Cretaceous dragon from Australia, about 12 meters (m) long, and the skull alone occupies about 3.7 m (m). Elasmosaurus has 76 cervical vertebrae on its neck, about 13 meters (meters) long, and its head and neck account for about half of its body length. The plesiosaur was shaped like a snake through a turtle shell: a small head, a long neck, a torso-like torso, and a short tail. Although the head is small, the mouth is large, and there are many slender tapered teeth in the mouth, and it is a fisherman. Many species have very large bodies, up to 11~15 meters long, and some species up to 18 meters. The limbs were specialized into fleshy flippers suitable for paddling, allowing plesiosaurs to move freely in the water and climb ashore to rest or lay eggs to reproduce. Plesiosaurs can be divided into two groups, long-necked plesiosaurs and short-necked plesiosaurs, based on the length of their necks. The long-necked plesiosaur mainly lived in the ocean, with an extremely elongated neck, like a snake, with a wide and flat body, and fins and feet like four large rowing oars, so that the body can advance and retreat freely and rotate flexibly. The long neck stretches freely and can pick up food from a considerable distance. The short-necked plesiosaur is also called the upper dragon. These animals have short necks, thick bodies, and long beaks, so they have large heads and large, powerful fins, which are suitable for swimming. The plesiosaur had long, thin teeth, and although it was carnivorous in terms of its tooth structure, its teeth were not very suitable for biting prey, but were more suitable for foraging for mollusks on the ocean floor for food. What we see now is a plesiosaur with a giraffe-like neck, which is truly spectacular.

This long-necked plesiosaur lived mainly in the ocean, with an extremely elongated neck, like a snake, with a wide and flat body, and fins and feet like four large rowing oars, so that the body can advance and retreat freely and rotate flexibly. The long neck stretches freely and can pick up food from a considerable distance. The short-necked plesiosaur is also called the upper dragon. These animals have short necks, thick bodies, and long beaks, so they have large heads and large, powerful fins, which are suitable for swimming. We also found a species of long-headed dragon in the Cretaceous strata of Australia, with a body length of 15 meters, but the head was actually 3.7 meters long, and the mouth was full of nail-like teeth.

Moreover, the reproduction method of this plesiosaur is different from that of most reptiles, which is born out of viviparity, and has many similarities with our human world. Robin O'Keeffe, an associate professor at Marshall University, and others analyzed a plesiosaur fossil from the Los Angeles County Museum of Natural History and found that the fossil was a female plesiosaur with a young in her belly, more than 4.6 meters long, and lived in the Cretaceous period between 72 million and 78 million years ago. The belly pups are larger, nearly 1.5 meters long, and have relatively intact bones, so it is unlikely that they were eaten by a large plesiosaur. This suggests that plesiosaurs gave birth to their youngs directly, unlike most reptiles that lay eggs and then hatch their offspring, a type of fertility known as ovoviviparity. And plesiosaurs do not give birth to multiple offspring at once like other reptiles, but give birth to a single large-sized descendant and give birth to a giant baby. I muttered, "Then these plesiosaur mothers are not easy, they are very difficult to give birth, such a big size can't be carried out by caesarean section." ”

Hu Jiaojiao deserves to be a hundred thousand whys, she continued: "By the way, what do these plesiosaurs usually eat, they are so huge, how much do they have to eat in a meal, are they enough to eat?"

I didn't think so and said, "It must be eating fish, there are so many fat and dense big red fish in Kanas Lake, they don't eat fish, what do they eat? Hu Jiaojiao glared at me with dissatisfied eyes.

Dumbo said with a hippie smile: "That's not right, no investigation has no right to speak, the traditional theory is that the plesiosaur mainly feeds on fish, squid and other swimming animals in the ocean, and it mainly eats fish for its life." In fact, the fossils found that plesiosaurs had clams, crabs and other seafloor shellfish in their stomachs, which proves that the plesiosaur's diet was more extensive, not only limited to hunting swimming fish, but also using its long neck to reach the bottom of the sea in search of various shellfish and molluscs. Richard Forrestal, an expert on plesiosaurs at the New Walker Museum in Leicester, England, said that the scientific community had speculated that plesiosaurs had the possibility of foraging on the seabed. Forrest also noted that prior to the study, paleontologists had found a suspicious trace in the Swiss ancient seafloor sediment, in which a groove was evident, which they speculated based on the age of the sedimentary layer, which they speculated might have been left by plesiosaurs. Based on this latest study, it is not difficult to see that the suspicious traces of the sedimentary layers on the seafloor strongly confirm that the plesiosaur had a seafloor foraging habit, which is probably the trace left by the plesiosaur when it searched for molluscs on the seabed. At the end of the Cretaceous period, plesiosaurs gradually withdrew from their position as the dominant forces of the seas, and the dinosaurs went extinct on the road to extinction, while the larger, more ferocious Cangsaurus became a formidable predator in the ocean. The reason why the plesiosaur adapts to the seabed foraging habits is because the plesiosaur is no longer the only overlord in the marine world, the plesiosaur has strong teeth, and can bite other swimming fish wantonly, in the predatory competition with the cangsaurus, the plesiosaur still retains the habit of preying on swimming fish, but under the natural evolutionary law of "natural selection, survival of the fittest" in nature, the plesiosaur gradually changed its hunting strategy and adapted to how to use its flexible and slender neck to find soft bodies and shellfish food on the seabed. Almost all plesiosaur thrust in the water was formed by the forelimbs slapping the surface of the water like penguins. In the simulation, the reptile had its hind limbs immobilized and still swam quite well, but without the forelimbs it would have been very difficult for them to produce effective movements. Because of this difference, it doesn't matter whether the forelimbs and hind limbs of plesiosaurs move in sync: it is possible that their hind limbs were used to orient and stabilize the body, rather than to generate thrust in order to swim flexibly in deep water. “

I suddenly remembered the news I had seen in the book before, and said in confusion: "By the way, there is also a very interesting phenomenon, after the research of scientists, in the study of plesiosaurs, researchers have found that there are a number of polished pebbles in the stomach of plesiosaurs, this kind of polished pebbles are called gastrolliths, for many years, plesiosaur bezoars have been a controversial topic in the scientific community, why is this?"

Xiao Fei said excitedly: "This is still inconclusive, there are different opinions, and some scientists think that they may swallow stones to gain weight in order to make themselves swim in the water." Scientists estimate that the total weight of an adult plesiosaur is 1,000 kilograms, which is 14 times the weight of an adult. The plesiosaur had to be steered by the help of its long neck, which was long and flexible, allowing it to twist its body and allow it to roam freely as it escaped. If there is a problem with its neck, it will have a very big impact on its swimming evasion. Plesiosaurs were adaptable and widely distributed, and at that time they lived in the oceans and freshwater rivers and lakes, and they were a veritable water giant. The cervical vertebrae of the thin-finned plesiosaurus had as many as 71 segments. Because of its large size, its neck is not proportional to its body, like a large snake in the shell of a turtle, and due to its special body structure, it cannot lift its limbs above its hips to dive its body completely. As a result, the dominant theory is that plesiosaurs were not very flexible in diving into the water to catch their prey during predation, so they swallowed many pebbles to help reduce buoyancy and no longer float on the water. It is reported that during the analysis of the two plesiosaur fossils unearthed in Australia, researchers found that one of the plesiosaurs contained 135 bezoliths in the stomach.

Some scientists believe that the main function of gastroliths in the body of plesiosaurs may be to help digestion, and plesiosaurs will swallow many clams, crabs and other animals with crusts when foraging on the vast seabed, and it is inevitable that indigestible shell residues will be left in the stomach. It was the pebbles that ground the indigestible shells in the stomach to facilitate the digestion of the plesiosaur's food, and over time the pebbles were ground to a very smooth surface. Other scientists believe that gastroliths help digestion and do not conflict with the earlier scientists' theory that gastroliths control buoyancy, and it is possible that these bezoars have at least these two functions, and the answer is only to ask the plesiosaur in front of him. “

Although we were surrounded by groups and couldn't move our hands and feet, we could still talk with relish, but those people around us were obviously in Cao Ying's hearts, and they trembled and looked at the Kanas Lake monster that was getting closer and closer, and their eyes became uncertain, and we were also panicked and looked at the increasingly huge black shadows, and had no intention of talking and laughing. 10