Who are the dinosaur stars in Cretaceous?

From 65.438+0.44 billion years ago to 80 million years ago, it was a world of fear of dragons in Cretaceous. At that time, the climate became warmer and wetter, the four seasons were distinct, flowering plants with lush foliage began to appear, and tall oak and hickory trees also appeared in pieces. The more suitable climate and environment made the life of these Mesozoic overlords reach its peak. Many new dinosaurs evolved in Cretaceous, when there were more kinds of dinosaurs on the earth than ever before.

Herbivorous dinosaurs lived in groups. They waded through mountains and rivers together, looking for lush leaves, and spent every day of the Cretaceous together. On the other hand, carnivorous dinosaurs had everything they needed to eat meat: fangs, sharp teeth and strength. They look for prey every day. Superior conditions make them dare to attack herbivorous dinosaurs several times their own. Of course, they prefer delicious dinosaur eggs and exquisite little dinosaurs. They are terrible hunters on the ancient continent and hold the power to control the life and death of natural creatures. Of course, their fate is sometimes controlled by other carnivorous dinosaurs. Now, let's look at the Cretaceous dinosaur stars.

Ctenosaurus: Its fossils were found in western North America. It is a large herbivorous dinosaur with a head and tail length of about 10 meter. Paeonodon's biggest feature is a curved hollow crown on his head. According to research, Paeonodon may use its hollow part to make sound.

Cimulong: Cimulong is a kind of duck-billed dragon. The female dragon is called "Maiasauns" in English, which means "kind female lizard". The mother dragon takes good care of her cubs. Generally, they lay eggs in plateau areas, so as to avoid floods and be aware of the surrounding movements. Xiaolong has been living with his parents since he was born. It is predicted that Xiaolong will not find food until he is 10- 12 years old. So generally speaking, it will take 65,438+05 years for the young dragons to live with their parents, and then the adult Ailong will let them go to the vast Yuan Ye with confidence. This dinosaur raised children with great pains, so it was called the mother dragon. Cimulong was about 9 meters long in her adult life and once lived in North America.

Ankylosaurus: It was a quadruped herbivorous dinosaur in Cretaceous. There are hard bone nails on the back, and there are bone spurs on the bone nails. Because of its heavy armor and huge size, it is called "living tank". They are characterized by a broad and strong skull and a mallet-shaped tail. Its skull has bony eyelids that can resist the claws of carnivorous dinosaurs. Its back, neck and tail are also equipped with decks. There are some nails and plates on the deck, and there are triangular bone nails above its eyes. Ankylosaurus has a unique tail, weighing at least 30 kilograms. Even more frightening is that there is a wooden stick at the end of the tail. This tail can't stand hitting anyone, so it's not afraid even if it meets a fierce carnivorous dinosaur like Tyrannosaurus Rex. Of course, you need to hold your position and don't let the other side fall apart, because once the soft abdomen is exposed, it will be miserable. Ankylosaurus is about 6-7 meters long and is estimated to weigh 2 tons. It lives in America and Canada.

Hao Yonglong: Hao Yonglong has a flat mouth and a long flat fin on his back, which extends from the back to the tail for 7 meters. The function of this fin can be used to control body temperature. When it is cold, the fin points to the sun to absorb heat and raise the body temperature. When it is hot, go to a cool place or a windy place to dissipate heat and lower the body temperature. Hao Yonglong is a herbivorous dinosaur who once lived in Niger, Africa.

Iguanodon: Iguanodon is named after its lizard-like teeth. There are no teeth in the front of the upper and lower jaws, and the teeth at the back are serrated and bite together. It is about10m long and 5m high. It walks on two feet, and its hind legs are strong. The strangest thing is that the thumb of its forelimb looks like a big nail, which is a weapon for self-defense. The forelimb has four fingers, and the fourth finger cooperates with other fingers, which can grab food, hook off branches and keep the body stable when walking. Iguanodon runs very fast, averaging 35 kilometers per hour. Its head is bigger, a bit like a bird's head, with a horny beak.

Iguanodons are distributed in Europe, North America, North Africa, Mongolia and other places.

Parrotbill dragon: Parrotbill dragon is the earliest ceratosaurus. Its nose is very short, its nostrils are very high, and its beak is also very high, which is very similar to the current parrot, so it is called parrot-billed dragon. This dinosaur is very small, no more than 2 meters long, and the size is like a dog now. When walking, you mainly walk upright on your hind legs. The teeth are wide and smooth and feed on plants. Parrot-billed dragon once lived in Shandong, Inner Mongolia, Liaoning and South Asia, Mongolia and Russia.

Mutabularon, this dinosaur is also a large herbivorous dinosaur. Its mouth and nose protrude forward, very prominent. Its hooves are horseshoe-shaped and its toes have sharp nails. This is a weapon for self-defense. Mutabularon once lived in a vast area of Australia.

Protoceratops: It is a small quadruped dinosaur that lived in northern China and Mongolian People's Republic in the late Cretaceous, and it is an intermediate type of evolution from parrot-billed dinosaur to ceratosaurus. Its body length is 1-2 meters, and its appearance is between parrot-billed dragon and ceratosaurus. Its head hasn't grown a real horn yet, just a little protruding. Protoceratops's egg fossils were found in Mongolia, and the bones of the unborn baby were still in two eggshells! This is the first dinosaur egg found.

Ceratosaurus: A four-legged vegetarian dinosaur that lived in North America at the end of Cretaceous. It has a big head, a mouth like a parrot, and a neck protector at the back of its head to protect its neck. There are different numbers of horns on the head, some on the nasal bone and some on the brow bone. Strong and very brave. Among the herbivorous dinosaurs, its weapon is the best. The young Ceratosaurus didn't even look at Tyrannosaurus Rex. Ceratosaurus also often fought with each other. They are 5 to 9 meters long and weigh 4 to 8 tons. There are many kinds, such as one-horned dragon, triceratops, pentagonal dragon, sauropod dragon, spinosaurus dragon, gap dragon and so on. They are the last members of the dinosaur family.

Passicator: Passicator was a ornithopod dinosaur that lived in the late Cretaceous. It walks on two feet, and its body is similar to that of a hadrosaur, but it has kung fu on its head. The most prominent feature is its thick and round skull, which almost covers its eyes. Pachecatosaurus's skull is 25 cm thick, which is its best weapon for self-defense and attack, so it is called the "steel-headed warrior" in the dinosaur world. When the enemy attacks, he will hit his head hard, even if it is sometimes head-on. Its skull is like a helmet, which can reduce the intensity of vibration and avoid concussion. Its iron fist is mainly used to deal with the attack of carnivorous dragons and to compete for spouses and leadership positions. A thick Danlong is about 5 meters long and 1.5 meters high, with short forelimbs and long hind limbs, and a long tail to keep balance. Pachecatosaurus lived in groups and was first discovered in North America.

Carnivorous Phanerosaurus: Carnivorous Phanerosaurus is a fierce carnivorous dinosaur. It is about 7.5 meters long and lived in the middle to late Cretaceous. It was found in Patagonia Plateau of Argentina in South America. Its head is like a bull's head, and its eyes have a pair of flat horns, which extend upward to the side. Its upper and lower jaws are very powerful and can easily tear large pieces of meat. The tail is long and powerful to keep the body balanced. Its forelimbs are extremely short, its hind limbs are extremely thick, its teeth are about 4 cm long, its teeth are serrated and its back is curved. As long as its fangs touch anyone, no one can escape its "Longkou".

Raptor: Raptor is not big, it can be said that it is quite small, but as soon as you hear the name, you know it is a very fierce carnivorous dinosaur, with flexible movements and fast speed. Raptors have a huge curved nail claw like a switchblade on each foot, which can be used in hunting prey. Fossils of Raptors were unearthed in China and Mongolia.

Egg thief: You can tell by its name that it specializes in stealing eggs from other dinosaurs. When the American delegation from Central Asia first found the skeleton of the egg-opening dragon in Mongolia, it was lying on protoceratops's egg. The egg thief's name rang. The egg thief is 2 meters long, with a small head, strong limbs and claws on his toes He is an expert in running fast. Besides, it has strong jaws and a hard beak. Of course, now some scientists seem to want to overturn the egg thief's statement that he didn't steal eggs. It may be an omnivorous dinosaur, eating clams and berries. It's been a long time. Who can tell what the real situation is?

Tyrannosaurus Rex: Also known as Tyrannosaurus Rex, it was a fierce carnivorous dinosaur in the late Cretaceous. It is the largest carnivorous dinosaur ever discovered in the world. It is about 15 meter long, 5-6 meters high and weighs about 7 tons. Its skull is very big, more than 1 meter long, covered with teeth as sharp as daggers, like a crazy "minced meat". Tyrannosaurus rex walked on two feet, with strong hind legs and sharp claws. Its four toes firmly support its huge body, and its forelimbs are seriously degraded and become very short. Each hand has two fingers, and the fingers have curved and sharp claws. Tyrannosaurus rex was first excavated in western North America. Studies have shown that this carnivorous dinosaur is extremely fierce, but it is one of the giant theropods that reached its peak. But sometimes it is also possible to pick up leftovers from other dinosaurs to satisfy their hunger.

Cephalopods: Cephalopods were found in England. It is about 9 meters long and has big nails, but these claws don't seem to be used to catch animals on land. Scientists found traces of fish in the fossil remains in its abdominal cavity. Therefore, these two big nails may be the best tools for catching fish. Like the harpoon now, the whale dragon may have been a carnivorous dinosaur, eating fish.

Geelong: Geelong live in western North America, Mongolia and Inner Mongolia, China. This dinosaur is about 6 meters long and has a large skull, which indicates that it may have stereoscopic vision. Its forelimbs have nails, its legs are slender, and its feet have straight and narrow claws, which can play an anti-skid role when running. Like Jilong, he can be said to be an expert in short-distance running in the dinosaur world. Because of its big brain, it is the most alert dinosaur in the dinosaur family. Like Jilong, its tail is very long, accounting for almost half of its body length. This tail acts as a balance when running. Its teeth are small and numerous, so it may be an omnivorous dinosaur. Its eyes are bigger, even small insects may catch it at dusk.

Deinonychus: Deinonychus got its name from its terrible claws. The English name is Deinonychus, which means "terrible claws".

Although Deinonychus was only three or four meters long, it was one of the fiercest groups in the dinosaur family. Its biggest feature is that its feet have a special structure. Its two feet each have a nail claw like a spring knife, which is particularly lethal. Deinonychus' tail is also very powerful. Its tail is mostly a long bone with a wooden stick, which is strong enough to be swept away. Deinonychus likes to kill prey in groups. During a scientific investigation, five individuals of Deinonychus and a vegetarian dinosaur 6 meters bigger than Deinonychus were discovered in an excavation.

Deinonychus lived in the early Cretaceous, and was found in Mongolia as well as North America.

Bird-like dragon: also known as ostrich dragon, about 2 meters high, similar in appearance and size to modern ostriches. Some people suspect that it may be the ancestor of ostriches (as well as extinct fear birds and elephant birds). The ancestor of Bird Dragon used to be a fierce theropod carnivorous dragon, but it was later "transformed" into an omnivorous dinosaur, eating fruits and flower buds of plants, as well as insects and other small animals. Its mouth is like a bird's mouth, and its teeth are degenerated. The neck and tail are long and the head is small. Long and powerful hind legs, good at running fast. Living in the late Cretaceous. Fossils have been found in Inner Mongolia and North America.

Hadrosaurs: It was the most prosperous dinosaur in the late Cretaceous. The mouth is flat and wide, like a duckbill. Some have tops on their heads, and some have flat heads. The anterior jaw and nasal bone of crested hadrosaurs were not in their original positions. Instead, it retreats to the top of the head to form a hollow protrusion. There are about 2000 teeth in the mouth of hadrosaurs. Length12m. Its forelimbs are short and its hind limbs are stout, and it mainly walks with its hind limbs.

Giant Shandong Dragon: It is a kind of platypus found in Shandong Province, China. Living in the late Cretaceous. Length15m, and height of 8m when standing. It is the largest hadrosaur found in the world at present.

Pungent Qingdao Dragon: This is a crested duck-billed dragon found in Shandong, China. Living in the late Cretaceous. It is about 6.6 meters long and 4.9 meters high. The nasal bone is the spine that grows on the forehead. It is believed that the spinous process acts on the resonance box.