How many kg does the smallest dinosaur weigh. The smallest dinosaur

Incredible Facts

Appearing about 230 million years ago, in the mid-Triassic period, dinosaurs began their existence on earth as small carnivores, which eventually evolved into thousands of different species, ranging from tiny predators, the size of a small dog, to huge plant eaters, weighing over 80 tons. Although other prehistoric stars such as pterodactyls and ichthyosaurs often copulated with dinosaurs, these large lizards (which is the Greek word for "dinosaur") were strictly terrestrial reptiles. They also differed from other animals in a set of unique features, such as the extension of the jaw muscles to the entire skull, which was peculiar only to them.

These traits were probably very impressive as they allowed these most fascinating prehistoric creatures to dominate the earth for over 160 million years. Although researchers are learning more and more about the mysterious beasts every day, constantly discovering more and more new specimens, below are the 10 largest, most interesting and unusual dinosaurs discovered. To begin with, let's introduce you to a dinosaur, in which at first glance there is nothing remarkable, but this is only at first glance, until you hear how he "sings".

10. Parasaurolophus (Parasaurolophus)

Some dinosaurs amaze us with their size, others with their speed, and still others with their cruelty. This dinosaur is famous for its nasal cavity. He was not particularly large in size, did not develop great speed and had neither sharp teeth, nor long claws, nor prickly tails. But if you have a special auditory cortex that can detect the movements of predators from afar, and thanks to which you can warn all your fellows of the approaching danger, you do not need any of the above signs.

The herbivorous member of the hadrosaur family, however, had a distinctive feature - it had a curved crest on its head. This crest may also have been used to attract a partner or for identification, and it started from the nose and extended to the entire head. The length of the comb was 2.4 meters, and it consisted of several tubes. When the dinosaur made sounds with his "trombone", their frequency was very low, and the sounds were very similar to a siren. This so-called "infrasound" was able to travel very long distances, thus warning other members of the group of approaching danger. Combined with very good hearing and the ability to detect predators at long range, these features were all it took to be on the safe side at all times.

9. Sinornithosaurus (Sinornithosaurus)

This dinosaur, whose name stands for Chinese bird lizard, was a small turkey-like dinosaur belonging to a family of carnivores. Sinornithosaurus rose to prominence after scientists discovered in late 2009 that the feathered predator may have been "venomous" as well. While other dinosaurs only showed possible signs of the ability to inject poison into their prey, the conclusions about this dinosaur left no doubt.

Having some resemblance to other poisonous animals, for example, with snakes, these dinosaurs had a special large pointed tooth, along which the poison went. The researchers also found a special channel in the mouth of the animal, which housed the gland, where the poison accumulated, and from where it came directly to the tooth itself. The back teeth of Sinornithosaurus were shorter and wider, and were intended for chewing. It is likely that he used his fang to inject venom into prey such as birds, pterosaurs, lizards, and mammals and then eat them. This method is not much different from the tactics of the poisonous snakes that exist today.

8. Ankylosaurus (Ankylosaurus)

With a length of 10.7 meters and a weight of 3-4 tons, this dinosaur had practically no rivals equal to it during the period when it roamed the earth in the late Cretaceous period. With a back and sides covered in steel-like spikes, bony eyelids, and bony "defense mechanisms" surrounding the outside of its skull and jaws, this herbivorous dinosaur appeared to be fully armored. However, apparently this was not enough for nature, and she also rewarded him with a massive tail capable of striking, with a force of about 43,000 pounds.

Thanks to the upper tail muscle and "floating" vertebrae, his tail swung like a whip at an angle of 45 degrees in any direction at a speed of 77 km / h. In addition to everything, there was also a 45 kg bone mass on the tail, which could easily kill any opponent without even looking. The only thing that does not fit into the image of this mighty animal is its small beak, which was intended for chewing plants.

7. Oryctodromeus Cubicularis (Oryctodromeus Cubicularis)

How could a dinosaur, weighing almost 32 kg, survive in conditions inhabited by predatory animals that were ten times larger than itself? In the case of these small herbivorous dinosaurs that lived at the beginning of the Cretaceous period, they "disappeared" quickly.

By digging small holes and hiding in them from predators, they thus managed not only to protect themselves, but also to wait out harsh weather conditions. Based on remains found in Australia and Montana, researchers have concluded that Oryctodromeus, whose name translates as "den digging runner", was a true master at digging. The dinosaur had a snout that it probably used as a shovel, strong shoulder muscles, and strong thigh bones with which it burrowed underground. However, even if all this did not help him escape from a suddenly appeared predator, he would use his long, strong hind legs in order to quickly run away from danger.

The hole in which the remains of the dinosaur were found exactly matched its size so that a dangerous predator could not penetrate it. Despite the fact that the length of the dinosaur was about 2 meters (not too impressive), half of this size was taken up by the tail. The fact that the bones of two other young dinosaurs were also found in the burrow indicates that parental care was practiced among these dinosaurs.

6. Spinosaurus (Spinosaurus)

Tyrannosaurus Rex often appears as the most feared predator in dinosaur films, however, the palm in this case is borne by the spinosaurus, which is considered the largest carnivore in the world that ever existed on earth. Weighing 9.9 tons, Spinosaurus, which means "vertebral lizard" in Greek, got its name from the distinctive "fins" on its back, covered with long spines. This imposing 'sail', which could have served as a built-in thermostat, mating bait, or simply to intimidate, reached a height of 2 meters when Spinosaurus arched its back.

Another distinguishing feature of this dominant predator of its period was its 2-meter head (the longest of any known carnivore) and narrow muzzle full of knife-like teeth. While most other carnivorous dinosaurs had curved teeth, Spinosaurus had straight teeth, possibly for catching slippery prey. Based on the similarities between this prehistoric creature and the crocodile, Spinosaurus probably also grabbed its prey and twisted its head in different directions, thereby finishing it off.

5. Sauroposeidon

Although carnivores such as spinosaurs were often viewed as animals whose lives were quite difficult, since finding, eating and digesting food for a 60-ton body was not an easy task, 18 meters high and 30 meters long, Sauroposeidon, belonging to the family of carnivorous sauropods , was the tallest terrestrial animal that ever existed. Moreover, the neck alone was 11 meters long.

His physique indicated that he had to consume about a ton of vegetation daily, an almost endless work. To accomplish this "feat", the dinosaur had 52 chisel-like teeth that cut down plants in one fell swoop. He didn't even bother to chew his food, swallowing delicious vegetation, which immediately fell into a 1-ton stomach, the size of a swimming pool. Then his gastric juice, which had incredible strength and could dissolve even iron, did all the rest of the work. The dinosaur also ingested rocks that helped it digest fiber.

It's good that the dinosaur had such a great digestive system, because with a lifespan of 100 years (one of the longest in the dinosaur kingdom) and in the absence of such a metabolism, he would have aged very quickly.

4. Deinonychus

This dinosaur got its name for good reason, since it means "terrible claw", and this clearly describes his nature. The bird-like dinosaur was approximately 1.5 meters high, 3 meters long and weighed about 91 kg. However, despite the rather modest characteristics, he developed great speed when moving, was smart and had a good arsenal of defense.

His hind and forelimbs were equipped with razor-sharp, as well as long and curved claws, about 13 cm long. With these claws, he not only grabbed prey with a stranglehold and tore the unfortunate victim to shreds, he also used them when walking. Deinonychus also had an impressive tail, which he used to balance when he stood on one leg, while the other was fighting with the enemy.

As one of the deadliest hunters of its period, Deinonychus was a force to be reckoned with.

3. Triceratops (Triceratops)

If any dinosaur could withstand the wrath of Deinonychus and his ilk, then this is exactly the Triceratops. A large, heavy and horned dinosaur, he was one of the most dangerous animals that lived on land. This species both attacked and defended very well.

The dinosaur had a nose in the form of a horn, and one horn above each eye, up to 1 meter long, so its weapon, consisting of the strongest materials, could easily gore even the most formidable enemy. As armor, Triceratops used a 2-meter shell that protected the head and neck, which is 6 times thicker than a human skull. However, in addition to defensive characteristics, this shield also served as a body temperature regulator and to lure partners for copulation.

This "steroidal rhinoceros" was half the size of a Tyrannosaurus rex, but weighed the same - about 6 tons. The positioning of the dinosaur's limbs also provided him with significant advantages. In a straight splayed posture, the center of gravity was directed to the head, which was ideal for the strongest frontal attack.

With such an incredibly equipped amount of features, Triceratops was the most common dinosaur of its time.

2 Tyrannosaurus Rex

The most famous dinosaur in the world, Tyrannosaurus Rex has been a dominant predator for 25 million years. With very keen senses, a bite force 16 times that of a crocodile, and seven tons of pure muscle, this is one dinosaur that definitely lives up to its name, which translates to "lizard king tyrant."

One of the dinosaur's most impressive features was its head. The size of an adult, its head was 2/3 muscle and weighed about 454 kg. The strongest jaw with 50 teeth, each of which was up to a foot long, could easily bite a car. The brain of a Tyrannosaurus Rex was one of the largest in relation to the body of an animal among the entire animal kingdom of the prehistoric period, which was well suited for analyzing information visible to the eyes. By placing the eyes 41 cm apart, Tyrannosaurus rex had excellent binocular vision and could see fine details up to 6 km away. The large olfactory bulbs in the brain of a Tyrannosaurus indicated that its sense of smell was as strong as its eyesight. According to some reports, the strength of his nose was equal to the strength of 1000 bloodhound dogs.

Contrary to what you may have seen in the movies, Rex couldn't run fast. Based on the ratio of the length of his femur and lower leg, he most likely developed a negligible speed when running. However, with such keen senses, steel jaws and dagger-sharp teeth, did he really need speed?

1. Archeopteryx

Is it a bird or is it a dinosaur? It's... Archeopteryx!

A transitional link between birds and reptiles, this animal has arguably generated more controversy than any other. Moreover, the debate is so heated that until now scientists have not been able to reach a real consensus on its classification. Although its remains, first discovered in 1861, clearly resembled feathers, similar to those of modern birds, they were also strikingly similar to those of small carnivorous dinosaurs found. As a result, today Archeopteryx occupies a worthy place, both among primitive birds and among feathered dinosaurs.

The size of a crow, Archeopteryx had a wingspan of 0.6 meters, however, it also had the characteristics of a dinosaur, which included the presence of sharp teeth, a flat sternum, a bony tail and claws. It is still unclear whether this curious creature used its feathers for flight, temperature regulation, or both. However, the flat sternum indicated that even if they did fly, they did not do so for an extended period of time.

Regardless of its flying prowess, Archeopteryx's status as the first known bird laid the foundation for our current understanding of how birds evolved.

Eoraptorlunensis is considered the most primitive of all dinosaurs. It received this name in 1993, when in the foothills of the Andes, located on the territory of Argentina, in rocks that are 228 million years old, researchers discovered the skeleton of this creature. This dinosaur, whose body length reached 1 m, scientists attributed to theropods - predatory dinosaurs from the ornithischian order.

Therizinosaurus was named the most ridiculous dinosaur

Its legs resembled bird's paws, each of which had 4 functional fingers, and a toothless beak "flaunted" at the end of the creature's muzzle.

Sauropods were representatives of the suborder of lizard dinosaurs. They were distinguished from other monsters by their incredibly long neck and tail. Sauropods moved on four limbs. These herbivorous dinosaurs inhabited most of the land in the Cretaceous and Jurassic periods (208-65 million years ago).

Scientists believe that the heaviest dinosaurs were:

• The titanosaurs Antarctosaurus giganteus (giant arctic lizards) have been fossilized in Argentina and India. Their weight reached 40-80 tons. Moreover, the approximate weight of the Argentinean titanosaurus (Argentinosaurus) could reach up to 100 tons. Such estimates were made in 1994 based on measurements of the size of its giant vertebrae.
• Brachiosaurus altithorax (hand-lizards), which got their name from their long forelimbs. The weight of these giants was 45-55 tons.
• Diplodocus Seismosaurus halli (earth-shaking lizards) and Supersaurus vivianae, which weighed over 50 tons, and according to some sources could approach 100 tons.

The largest and tallest type of dinosaur

the skeleton of which managed to be completely preserved was found in Tanzania, and more precisely in Tedaguru, Brachiosaurus brancai. Its remains were found in the late Jurassic deposits formed 150-144 million years ago. Excavations were carried out in 1909-1911 by German expeditions. The preparation of the bones and the assembly of the skeleton took place at the Museum of Natural History at the Humboldt University in Berlin. The dinosaur skeleton was created from the bones of not one, but several individuals in 1937. The total body length of the brachiosaurus was 22.2 m, the height at the withers was 6 m, and the height with a raised head was 14 m. During his life, his weight, according to scientists, reached 30-40 tons. The tibia of another brachiosaurus, also kept in the museum, suggests that these dinosaurs could have been much larger.

The longest dinosaurs were

the brachiosaurus Breviparopus, whose body length could be 48 m, and the diplodocus Seismosaurus halli, discovered in the US state of New Mexico in 1994, whose body length reached 39-52 m. The basis for obtaining such estimates was the comparison of animal bones.

The smallest dinosaurs are considered

cosmognatus (graceful jaw) that lived in the southern part of Germany and the southeastern region of France; and a little-studied herbivorous fabrosaurus that lived in the territory of the US state of Colorado. The length of these creatures, from the tip of the nose to the tip of the tail, was 70-75 cm. The weight of the first reached 3 kg, the weight of the second - 6.8 kg.

Ankylosaurs are considered the most armored

of all the dinosaurs that existed on our planet. Their head and back were securely protected by bone plates, spikes and horns. The width of their body was about 2.5 m. Their main distinguishing feature was a tail, at the end of which a huge mace flaunted.

The largest footprints of a prehistoric lizard

there were traces discovered in 1932 on the territory of Sol Lake City, Utah. They belonged to a large hadrosaur (platypus) moving on its hind limbs. The tracks were 136 cm long and 81 cm wide. In other reports from Colorado and all the same Utah, it was said about another track 95-100m wide. According to some reports, the width of the traces of the hind legs of the largest brachiosaurs can reach 100 cm.

The largest skull

belonged to a torosaurus, a herbivorous lizard that wore a huge bone shield around its neck. The length of this dinosaur could reach 7.6 m, and weight - 8 tons. The length of the skull alone, together with the ossified “frill”, was 3 m, and its weight was about 2 tons. This "brainy" creature lived on the territory of the modern American states of Texas and Montana.

In the line of the most toothy dinosaurs

in the first place are the ornithomimids Pelecanimimus (bird-like dinosaurs). They had over 220 incredibly sharp teeth in their mouths.

The owners of the longest claws

were therizinosaurs found in the Late Cretaceous deposits of the Nemegt basin, located on the territory of Mongolia. The length of their claw along the outer curvature could reach 91 cm. In Tyrannosaurus rex, for comparison, this value was 20.3 cm. Therizinosaurus had no teeth at all, and the skull was rather fragile. This lizard ate, according to scientists, termites.

Spinosaurus could also boast of its long claws, the total length of which reached 9 m, and its weight was about 2 tons. In January 1983, an amateur paleontologist William Walker discovered a 30 cm long claw belonging to a spinosaurus near the English Dorking.

The largest eggs

Of all the dinosaurs known to science, the 12-meter titanosaur Hypselosaurus priscus, who lived on our planet about 80 million years ago, laid aside. Fragments of his egg were discovered in October 1961 in the valley of the French river Durance. According to the assumptions of scientists, its dimensions as a whole were 25.5 cm in diameter, 30 cm in length, and its capacity was 3.3 liters.

The trails created by dinosaurs are used by scientists to determine the speed of these animals. So found on the territory of the US state of Texas in 1981, the trail allowed the researchers to conclude that a certain carnivorous dinosaur was able to move at a speed of 40 km / h. Some ornithomimids are known to be able to run even faster. For example, the owner of a large brain, a 100-kilogram Dromiceiomimus, who lived at the end of the Cretaceous period in the territory of the modern Canadian province of Alberta, could easily overtake an ostrich, whose speed of movement could exceed 60 km / h.

The smartest dinosaurs

troodontids are considered, whose brain mass in relation to their body mass was comparable to the same parameters that the most intelligent birds possess.

Living 150 million years ago in the territory of the modern American states of Oklahoma, Colorado, Wyoming and Utah, the stegosaurus could reach a length of 9m. However, the brain of this creature did not exceed the size of a walnut, and its weight was only 70 g, which was only 0.002% of the mass of its entire body, which averaged 3.3 tons.

If you think that we have told everything about dinosaurs, then this is not so. In fact, there are still a lot of open questions and interesting facts about these ancient creatures.

Mesozoic animals

What did the Earth look like during the Mesozoic? Everywhere walked reptiles of huge and smallest sizes. Dinosaurs reigned for more than 165 million years, but mysteriously began to disappear. To gain knowledge about species, paleontologists study their fossils left in the Earth. The remains of the smallest dinosaur have been found in North America. Fossils were discovered as early as the 1970s. thanks to Elizabeth Nichols of the University of Alberta in Canada.

Bones of unknown type

It is not clear how these small bones were stored in cabinets until they were found by Nick Longrich. So they were identified very recently. The new species was given the name Hesperonychus elizabethae. Scientists studied the shape of the pelvis of the skeleton and were able to prove that the ancient lizard was an adult representative of these individuals, just small by nature.

The bones of such a small dinosaur were the hardest to find, as they quickly decomposed and fell apart. However, scientists were able to detect it in North America, in the Canadian province of Alberta. This previously unknown dinosaur species weighed no more than 1 kg and was about 70 cm long. It was proved that the creature lived about 150 million years ago.

Dinosaur the size of a cat

Canadian paleontologists have announced that miniature dinosaurs were an important link in the food chain. The smallest dinosaur was the size of a domestic cat, although it was a dangerous predator. Its main food sources were insects and small mammals. In addition, hunting in packs, they could attack the cubs of other dinosaurs.

Such a miniature lizard ran briskly on its feet and defended itself with very sharp teeth and sickle-shaped claws. Nick Longrich, who proved the existence of the species and named it after Elizabeth Nichols, believes that they lived in large numbers in the forests of the Cretaceous period.

Anatomical structure

The anatomical structure makes Hesperonychus elizabethae related to the velociraptors found in Asia - bipedal predators, well known from the movie "Jurassic Park" by Steven Spielberg. Even more small lizards were similar to the ancient four-winged microraptors. Paleontologists suggest that these populations may have shared a land route between Alaska and Siberia.

By the way, recently Longrich found and described the second very small predator living in the territory of present-day North America. Albertonykus borealis did not exceed 60 cm in height and fed on small insects: ants and termites.

Julia Domakhina, Samogo.Net

Life publishes a rating of prehistoric giants compiled by Stepan Savelyev. This Moscow schoolboy became famous after his mother published a post on the social network with a request to support her son and put likes under his publications. The fact is that classmates called the boy a "loser" due to the fact that he is fond of dinosaurs, and does not play computer games, like everyone else. As a result, Styopa instantly became the star of Runet and federal TV channels. Life offered Styopa to try out as a freelance writer.

"I analyzed 10 dinosaurs that managed to distinguish themselves in some way. I hope no one will be offended that I allowed myself to joke a little."

1 Spinosaurus

The biggest predator. It is easy to recognize him by the sail that grows on his back. This sail reached 2-4 meters in height! Probably, if desired, the spinosaurus could become a hang glider! Spinosaurus was 16 meters long, 5-8 meters high, weighed from 4 to 14 tons. Its long jaw allowed it to hunt fish and other aquatic creatures. During periods of drought, he ate other dinosaurs, and did not disdain carrion. This comrade also managed to light up in films and cartoons. He was the one who defeated the Tyrannosaurus Rex in Jurassic Park 3.

Recommendation: if you put him on a chain and put him on a huge raft, then his sail will help to go on the right course, especially if he is turned in the right direction with the help of feed. And if this sail is painted red, then you can at the same time shoot the "Scarlet Sails" in diversion. A sort of Godzilla from the ocean under scarlet sails.

2. Tyrannosaurus rex

Probably the most famous dinosaur in the world. In total, more than 30 individuals were found, there are also almost complete skeletons. This is a very large predator, reaching 13 meters in length and 4 meters in height, weighing almost 7 tons. He ran pretty fast at that weight - his speed was from 40 to 70 km per hour. Real car! At the same time, he was quite nasty and harmful in nature. He's a cannibal, which means he ate his own kind.

True, you can laugh at him (at a distance, of course): he had very short front legs, like a crocodile from a cartoon about bad teeth. So, most likely, his teeth also hurt, he could hardly brush them.

3. Torosaurus

My favorite dinosaur with one of the biggest skulls. But I love him not only for this. Found for the first time quite a long time ago, back in the 19th century. Its size was about 8 meters, and the skull was 3 meters long, that is, more than a third of the entire dinosaur was a head. This means that he could be very smart! He was pretty heavy. Herbivorous. And he also managed to light up in "Jurassic Park - 3". The torosaurus has a beak, which helps it deftly bite leaves and branches. It was not aggressive in itself, but could defend itself well, having very large and strong horns. Not every predator would dare to contact a torosaurus - who wants to become a victim of dinocorrida? Torosaurus also had a large bony collar, larger than Triceratops, which is similar in appearance to Torosaurus. Not confused yet?

Recommendation: Due to its non-aggressiveness and intelligence, it can be used as a large pet. For example, how some keep elephants. Surely you can teach him some tricks and then perform with him.

4 Stegosaurus

A dinosaur with a very small brain, only the size of a walnut! This is a very beautiful and unusual dinosaur. This is the usual combination of beauty and intelligence for those times. He has plates on his back that helped him cool or warm the body. Some scientists think that he could move these plates like a butterfly's wings. It was a little short of a Tyrannosaurus rex in length, was about 9 meters long, and weighed about four and a half tons. Stegosaurus was a herbivore, usually grazed like a cow. Didn't give milk. But his hind legs were stronger than his front ones, so he could pluck trees in search of food. Despite the fact that he was a herbivore, he was quite dangerous - there were spikes on his tail, and a blow with such a tail could be fatal for many dinosaurs! It is said that his plates could be painted in very bright colors. To attract the attention of female dinosaurs, and vice versa. In fact, until now, scientists do not know what color dinosaurs actually were, so we can only fantasize.

5. Allosaurus

This is one of the first dinosaurs found. His remains were discovered back in the 19th century, in 1877. It's also a movie star dinosaur, just like the Tyrannosaurus Rex. He starred in the movie "The Lost World" (based on the novel by C. Doyle) and "Thunder Came" (based on the novel by R. Bradbury). Allosaurus is a carnivorous and very large dinosaur. It is quite dangerous, but smaller than a Tyrannosaurus Rex and much lighter than it. He moved faster. It reached a length of 9-10 meters, and its front legs were also small, like those of a tyrannosaurus rex, however, more authentic. On his front paws he had three large and very dangerous dirty claws. It was dangerous for allosaurus males to quarrel with their females: they could scratch out their eyes. An interesting fact: the Allosaurus could breathe like birds, not exhaling air from its mouth, but blowing it out through special holes in the vertebrae. An unusual technical solution, but it helped him to pursue prey for a long time without losing his breath. Which, as it were, did not exist.

Recommendation: due to its excellent physical shape and the presence of special holes, it can be used to participate in a marathon race. True, ahead will have to release prey, which he will pursue. It is unlikely that it will be possible to agree with him in a good way. Brains are also a problem.

6 Argentinosaurus

One of the largest dinosaurs found. Its length is from 22 to 35 meters, and its height is 12-14 meters. Like a five-story building! Can you imagine? This "meat house" weighed about 70-75 tons. This is how much the first American reusable transport spacecraft Enterprise weighs. Of course, it is impossible to feed such a monster with meat. He was a herbivore - he ate grass, leaves, twigs. Really, honey? Naturally, with its size, few people could pose a danger to him at all, except that small predators, like piranhas, could fly into him in a flock and gnaw. He would not have had time to escape from them, but he could fight back for a long time, especially if the flock was small. He did not move very fast and on four legs, they were powerful and the same, like an elephant's.

7 Seismosaurus

One of the longest dinosaurs. Reached a length of 50 meters. He is also one of the heaviest dinosaurs. Its weight reached 140 tons! It's like the E-100 tank, for those who understand. This cutie ate grass and leaves. It had a oh-very long neck and a oh-oh-very long tail. In general, this dinosaur moved on four legs almost parallel to the ground. Of course, he could not rise on his hind legs, but he could lift his neck up to get to higher leaves, when he had already eaten everything below. No one contacted such a dinosaur, therefore he himself was harmless, and few people attempted on him. The main thing here is not to get caught under his paws or tail. If he wandered into a swampy area, he could get bogged down, so he mostly wandered on land, sometimes reaching the surface of swamps and lakes, and could not even climb into forests due to his size. Poor!

8 Apatosaurus

The dinosaur with two names and the most learning errors. Scientists gave him a strange name and attributed someone else's head. The skulls of herbivorous dinosaurs are rarely preserved because the bones of such a skull are usually small and decay more quickly. His second name is brontosaurus. A very large dinosaur. Reached a length of 20 meters and weighed about 17- 20 tons. But at the same time, his brain weighed only 400 grams. Not the smartest dinosaur. But he could stand on his hind legs, which is all for dinosaurs with such a long neck. yo - a rarity. Apatosaurus lived in packs.They had a rather long neck and a long tail.They walked, lifting him off the ground, otherwise the comrades walking behind could crush him.

9. Eorpator

One of the earliest dinosaurs. Lived in the Triassic period almost 230 million years ago. It was very small, only 1 meter in length, and weighed only 10 kilograms. Almost like a dog. He was a predator, therefore, of course, it is better not to keep such a pet as a pet.

10. Compsognathus

One of the smallest dinosaurs. This baby was less than a meter long, usually 60-70 centimeters, and weighed up to 3 kilograms. Like a cat. True, he has more teeth than a cat - 68 pieces! Of course, so many teeth are needed not to chew grass. It was a predator. Very harmful, like any small predators. Given his small size, he needed to live in a pack. Alone, such kids have little chance of a good hunt, and it’s more fun to defend yourself in a crowd. He fed on lizards and insects. He had a very mobile neck, like an owl, he could rotate it along a very large radius. The long tail helped him keep his balance when running fast. He ran on two hind legs, the front legs were short. With them, he probably held prey while eating, like a hamster. These small boogers also took part in "Jurassic Park - 2". The man was eaten. Mercenary.