Showing posts with label Dinosaurs.. Show all posts
Showing posts with label Dinosaurs.. Show all posts

Panthera tigris acutidens


I'll tell you a secret. When we speak of prehistoric big cats, the most powerful, the most dangerous and terrible hunter, it's easy to come to mind two species: the Cave Lion (Panthera leo atrox) and the saber-toothed tiger (Similodon).

But really, there is another species that is probably the most terrible, strongest, largest cat that ever lived and that's a real unknown to the general public, it is the Panthera tigris acutidens. A cat can only hunt animals such as Stegodon (which is a type a type of small elephant) or Calicoterio. To get an idea, this prehistoric cat could hunt down an actual cape buffalo. One of those we see in documentaries Africa needed 4 or 5 lions to tear it down.

Panthera tigris acutidens, as the name suggests "tigris" is a kind of tiger. In fact it is considered a direct ancestor of the Asian tiger, the largest today.

Little is known of this beast. It was not only larger than the largest tiger today, it was also more massive. Therefore, it is thought that it was not a long distance runner, but short and quick, races depended stalking and grounds overgrown jungle that allowed close enough to approach their prey in a quick race. It is believed that could weigh 450 kg (992 lb), 100 kg (220 lb) more than the Siberian tiger. Moreover, the cross came to 1.30 meters and tail, could reach almost 4 meters (13 ft,).



The tusks of this were in line, about 15 cm in length. And when I was able to reach its prey nailed them like sharp daggers or spine smashed or crushed trachea hunted animal.

He lived 2 million years ago and it is not known exactly when it died ... in the early Pleistocene. In cold, snowy woods of what is now China and other parts of Asia, where its winter whitish camufrarse allowed.

Gastonia.


Family of ankilosauridae (which are protected under bony armor, armored lizard literally), we can point the Gastonia burgei. A herbivorous whose most notable physical feature was its enormous armor protecting the back of the body and neck and serves as an indication to know your storyline. An armature, a row of spines and bumps that made ​​it impossible to sink your teeth predators. Besides working in packs, and facing a predator joined rows forming impassable reminds African buffalo versus lions.

The characteristics of the excavation where the fossilized bones were found, no one knows exactly the number of spines possessed. Is known is that some reach 50 cm (1,7 ft) in length, therefore, predators should be very careful not to bump into these horns if they did not to lose an eye, or were nailed to the heart or lungs.


In fact, its only weakness was the belly, for that, the predator must rotate in order to reach an area unprotected. Something that is very difficult because the Gatonia was an animal with a very low center of gravity and weighing more than 1000 kg (2204 lb). Length up to 5 meters (7 ft) long, with a tail of 2 meters which it used as a whip and a simple swipe of the tail, was able to knock down a predator.

Found between predators to Utahraptor, which by name and intuit that was in Utah, in the United States. And the Gastonia lived mainly in what is today North America and Europe during the Cretaceous period, about 125 million years ago.



A curiosity about Gastonia. Phylogenetic by this prehistoric animal is the Ornithischia. This animal, known for their muscles, strength and be massive and heavy, shares a similar bird hip, which means bird and ornitheos ischion by hip. But this similarity does not mean anything, is only superficial because birds are from the order Saurischia

Sauroniops

Who has not seen The Lord of the Rings: The Fellowship of the Ring? Or The Lord of the Rings: The Two Towers? o The Lord of the Rings: The Return of the King?, probably all have seen and certainly know who Sauron. The science fiction character created by Tolkien and that is the representation of evil. Its eye is all-seeing, is the eye of the devil on earth.


Well curiously, there was a dinosaur that, when discovered, was baptized with the name of Sauroniops, which means "Eye of Sauron". Personally I look weird, I find it very curious that have given the name of a science fiction character to a prehistoric animal, well known for it. So I've been investigating why this curious name and I discovered something: this saurian bones were found a few years ago, in Morocco (Africa) and at first had only one bone, the top of the skull closed eye and I had conical pyramid shape (reminiscent of Mordor mountain), so researchers, in a moment of inspiration, decided to borrow the name of Sauron for naming this prehistoric animal.

Well, part of this curiosity, how was the Sauroniops?

This was a theropod and theropod. The was a large theropod dinosaurs group with common characteristics such as walking with strong hind legs and essentially carnivores. A group where we can meet other dinosaurs like T-Rex or Giganotosaurus.

The species Sauroniops pachytholus, could reach up to 13 meters (42 ft)  and the skull could exceed 1.5 meters (5 ft) in length. A powerful bite of a mouth full of sharp teeth as knives adapted for tearing the body of their prey.

A physical characteristic that would help to distinguish it from other theropods (and in particular of other Carcharodontosaurios, physically very similar) was the bulge protruding from the top of the skull and that was the inspiration for its name. We look like a small T.Rex but one bump on the head.

The Inostrancevia.


The Permian period ended 250 million years ago, is the characteristic period of the great explosion of different vertebrates, also terrestrial wildlife and the emergence of future ancestors of mammals as we (and you too) and also the ancestors of past and prehistoric reptiles such as dinosaurs.

Our ancestor while superpredator of the Permian period was a Gorgonops (Gorgonopsid, a family of reptiles which is really more a mamíferol). How I explained earlier bad, if we saw a Gorgonops, probably would think it is a reptilian, but really its features are unique to mammals, such as hot blood ... in fact, it is considered our distant ancestor and that we are descended from it ... and you too.


Well, the largest Gorgonops, the superpredator of the period was the Inostrancevia (any of the 3 species). It was a hunter well developed, nearly 4 meters (13 ft.) in length. Intelligent compared with other creatures of the Permian. It walked to 4 legs, and moved similarly to the Komodo dragon, though its legs kept it at a slightly higher position and not dragged belly. Being able to reach higher speeds and close to 50 km / h.

The skull measured up to 50 cm and had teeth similar to the saber-toothed tiger ... fangs longer than about 15 cm, sharp and ready to hunt their prey. Besides its jaws were very powerful and with the force of its bite crossed Scutosaurus skin, the largest herbivore and was covered by a hard shell crossing.

Although extinct in the late Permian, about 250 million years ago, in the mass extinction of the Late Permian and early Triassic. We know enough of them. The numerous remains were discovered over 100 years ago in what is now Russia. And his name "Inostrancevia" refers to the famous Russian geologist A. Inostranceva.


Stygimoloch Spinifer


The image you see, is not an evolved Pokemon, or any other animal picture Japanese manga. That which you see is the drawing, a more or less like a real dinosaur, a dinosaur that is listed as one of the strangest-looking dinosaurs ever found there.

The name of this prehistoric animal is Stygimoloch Spinifer, meaning "thorny devil from the river of death" (intriguing name). He was a member of the family of the pachycephalosaurs, this means that family was the "dinosaurs thick heads" (translation mine). Finally, the most characteristic of Stygimoloch Spinifer was that, his head. His skull was not as thick as other pachycephalosaurs, very well, but has a large number of horns, horns on his head on the muzzle, on the back of the skull and other parts of the face ... On the horns, the experts still do not agree on whether they were to defend themselves, to show off to fight with others of the same species as do the deer, etc.. From what I think so we will agree (experts and mortals ) is that the horns give it looks fantastic, like the dragons of the films. In fact I think the first who drew dragons, were inspired by this animal ... but hey, back to real dinosaur.



The Stygimoloch Spinifer was a herbivore that measured just over 3 meters long and about 2 meters high. He had small front legs but instead the rear were long and strong, so considering that it was agile and quick. In fact, he could inhabit the same ecological niche as a deer or an impala in Africa today ... the only thing that did not live back then lions, but Tyrannosaurus Rex.


He lived in the Late Cretaceous (70 million years ago) in North America. And disappeared probably because of the large meteorite that caused the Cretaceous mass extinction.

Evolution: the Purgatorius to men.

In the great debate of the past (I now passed) between creationism and evolution were the remains of an animal as Purgatorius which tipped the balance in favor of supporting the evolution.

The Purgatorius is an animal with an important role in the evolution of man, is considered the protoprimate (ancestors of the primates) older, but their taxonomic position is uncertain. It has been argued that Purgatorius was an ancestor of primates and the Plesiadapiformes (an order of extinct mammals).

Paleontologists have found fossils of this mammal along with other fossilized remains such as the T-Rex when it happened the great extinction of the dinosaurs 65 million years. It is one of the survivors of this great catastrophe. He survived the cataclysm that caused the famous meteorite impact that ended the reign of the great reptiles and gave way to the evolution of other kinds of animals negligible so far.

In short, it is believed that if he had not resisted Purgatorius extinction, hibernating in deep burrows and feeding on roots and bulbs, we would not exist.

It was a small mammal of about 15 cm long (like a small rat) and one kilogram. He ate everything (omnivorous) and may feed on plants, fruits or meat scraps toast of a Triceratops.



Austroraptor

 




The Austroraptor is a close relative to Velociraptor, but larger, about 20 feet long (3 times longer). His name means "thief of the South" (South raptor), such as birds, and do not put this name by chance. In a way, his appearance might remind us old birds, a predecessor to the Raptors next we Know today. His head (over 4 fts) was low, long and streamlined, provided with numerous small and conical teeth. Moreover, according to the markings found in fossils, it was covered with feathers.

This prehistoric animal called attention to the paleontologist who discovered it to see how their upper limbs were in proportion smaller than others of the same gender: their short forearms depart from the condition characteristic of all long arms and their relatives dromaeosaurids avian nearby. This would therefore be a missing link between dinosaurs and modern birds.
  Perhaps (and this is my opinion) is an example of regression, this means that they resumed their oldest species characteristics. As is the case of flightless birds also reduce its wings.

Instead, it was her hind legs which facilitated the classification of this new species, the family Dromaeosauridae or "corridors lizards." By this I mean that was a fast runner Austroraptor, who had strong back legs and he used to hunt their prey.

The Austroraptor lived 70 million years in the late Cretaceous period in what is now South America..

Xiongguanlong, the ancestor of T.Rex


Xiongguanlong, the dragon of Jiayuguan (a city in China) is of utmost importance if we are to understand the appearance on earth Jurassic was the best known of all dinosaurs: Tyrannosaurus rex.

Its dimensions are not overly large jaw crusher or lacked teeth 30 cm long (1,2 ft) but its evolutionary features makes it worth being described as other lucky animals in this blog. Seriously, any prehistoric animal lover should know about this dinosaur.

The Xiongguanlong measured about 6 meters long and nearly 2 meters tall (7 ft), weighing around 300 kg (660 lb) the T.Rex was over twice and weighed 30 times more). His skull was about 50 cm (1,65 ft) long and the snout was long and thin that the T.Rex, more adapted to cut meat to crush bones. But I began to have those morphological features of Tyrannosaurus rex:



A box-shaped skull.
Reinforced temple bones to support the jaw muscles.
A strong spine that holds a large head.
Reduced forelimbs.
A predator might be terrible in its time but was not the biggest nor feared, did not reach the level of predator.



This Tyrannosauroidea theropod dinosaur lived in the Cretaceous between 125 and 100 million years. Keep in mind that most of the family lived in the Cretaceous Tyrannosauroidea ... not in the Jurassic as the movie suggests: Jurassic Park.

And for that matter, so as not to cause further confusion and this time for my culpa.Que the Xiongguanlong is the ancestor of T.Rex, does not mean it's necessarily the direct ancestor or the t. rex is the offspring following, but is useful in determining the overall pattern of evolution tyrannosaurid, is like knowing discovered a missing link in the evolution of T.Rex.


Last image taken from http://ca.bestpicturesof.com/paleoart

Acrocanthosaurus



Without quite knowing why, Acrocanthosaurus lived to the public under the shadow of T.Rex, still a great unknown to most and undervalued its role as a hunter at the time of the Cretaceous in North America and Europe.


About the size of T.Rex, the Acrocanthosaurus was a cousin of Allosaurus and, as this was a hunter specializing in large animals, giant sauropods like Diplodocus weighing 6 or 7 times or Pleurocoelus.
.


The name of this lizard Acrocanthosaurus means "thorn lizard high" and indeed, when it was discovered, even mistook him for the BIG SPINOSARUS (King of Kings). The theme of the spines always generates controversy and do not become experts agree: if they were to regulate the temperature, if it was to swim, to show your mood, or to house unions with strong muscles ... too numerous to write about this but we'll see another day.

Speaking of muscles, the Acrocanthosaurus was very muscular and strong, much more than others allosaurids. Something like an Allosaurus largest and steroids. It measured 12 meters and weighed 5.6 tons, and this made ​​him a bit slow *. He ran and ran up to the big sauropods (which is not that they were cheetahs) long necks and hooked to these formidable pulling their strong claws and bite with all his weight down, dropping these titanic beasts.

* It was the weight and slow what they did to specialize in hunting large animals, or vice versa, hunting big beasts Acrocanthosaurus led to larger and more robust. Finally, the case is to specialize in this way produced an end. Forms were disappearing with the big sauropods, the Acrocanthosaurus were increasingly less likely to hunt and smaller dams could more easily escape them. His strength was his undoing.




Eotriceratops


Recently on the blog include the legendary battle T.rex vs. Triceratops, and people keep leaving your views and comments, but what is certain is that the results would be very different and unfavorable to the Tyrannosaurus if instead of fighting against a triceratops, he should make against a Eotriceratops.

We could say that if the triceratops was a black bear, the bear was a grizzly Eotriceratops. Were indeed very similar but the Eotriceratops was larger, heavier and older. Eotriceratops means "the first with three horns on their heads." This is a triceratops that has the largest horns all have been discovered so far, something he himself would doubt the Tyrannosaurus Rex.


It is estimated that hast measured 12 meters (2 more than the Triceratops) and 15 tonnes (3 more than the T.) and had a huge head of 3 meters long ... 3 METERS!!



The Eotriceratops is older than any other group ceratopsid or Torosaurus Triceratops lived in the late Cretaceous period in what is now North America and the only known species refers to the Eotriceratops xerinsularis.

Apart from size, age and weight, has other features that distinguish it from Triceratops as one nostril much higher (for it is thought he could permacener submerged in water for long periods of time) and larger horns and near eyes.

Triceratops vs T-rex.

The legendary battle between Triceratops and T. Rex, maybe a little classic, this confrontation itself may have occurred in antiquity, in reality, and this gives a particularly morbid.


In old movies, in books for children and television shows have used this resource, this battle, as an incentive to attract attention, create suspense and tension. In some cases, the T. Rex killed the Triceratops and in other cases it was the other way around ... But in reality ... Who would win both?

This video is a movie made in 1925, was called Lost World. The Triceratops was heavy, slow and with horns that seem to exceed 50 cm. But it was not.

Triceratops.


Lengths up to 10 meters long (30 ft).
Weight: up to 12 tons (26.000 lb).
Horn of 1 meter length each. (3 ft)
Height: up to 3 meters. (9 ft)
Speed ​​of 35 km / h


T. REX.


Lengths up to 13 meters long. (40 ft)
Weight: 10 tons. (20.000 lb)
Height: 4 meters. (12 ft)
Mouth with a strong bite.
Speed ​​40 km / h.

NOW LET'S SEE YOUR SKELETONS:








There are many things to consider. The powerful bite of T. rex and its poisonous saliva, and its form of attack. The speed of Triceratops that if envistiera to 35 km / h, could go through with his horn the body of T. Rex. The robustness of the body and a collar bone that covered his neck and massive head 2 meters of the Triceratops.

Hainosaurus

You have certainly heard of Mosasaurus, the great predator of the Cretaceous, a fearsome marine hunter was afraid of other creatures of the sea but ... and Hainosaurus? While not believe it, the Hainosaurus belonged to the same family as the Mosasaurus, Mosasauridae the family.


He was also a marine reptile, an apex predator that lived with her ​​relative Mosasaurus.


Hainosaurus dimensions have been debated: Some experts believe that reached 17 m (57 ft) and 13 m (42 ft) change others, but the vast majority agrees to an average size 15 meters (50ft).


This hunter's skull measuring 1.5 meters (5 ft) long. And in his jaws were more than 60 teeth are sharp and hard. Among their prey were fish, turtles, marine reptiles and even smaller sharks.

The hainosaurus had an elongated body that was perfectly adapted to the water to achieve greater agility and speed. They had fins on the sides and curved tail with fins to swim very fast, to reach out and catch their prey without that it can do almost anything.


This prehistoric animal was specially adapted to be in the water, and some of the questions that have their fossils are related to how and where breeding and giving birth to their young, uncertain whether it was viviparous, oviparous or ovoviviparous.


Although little is known of this marine reptile, I hope you discover more about the wonderful Hainosaurus.

The protofeather or Dinofuzz.,

The protofeathers (or Dinofuzz) ... the great mystery of reptilian scales transition feathers.

What are protofeathers?

The protofeathers are structures shaped keratin hair or bristle and are considered the precursors of feathers.

When did?

Much of all this passionate debate is the date of appearance of the feathers, protofeathers. It is interesting that the oldest fossil
protofeathers are later than the earliest known bird. It makes no sense unless the protofeathers or dinofuzz ​​appeared much earlier (in the Middle Triassic) and therefore would all structures originally present in dinosaurs and their immediate ancestors. Impressions of skin devoid of feathers or protofeathers known (Anatosaurus, Carnotaurus, Tyrannosaurus, etc..) Could be due to a subsequent loss of the outer coating due to the large body mass of these animals (the same reason that the rhinos and elephants have virtually no hair). But this need not be. Anyway ... although I am inclined to this theory, it really is just a theory.

How are the protofeathers?

According to the current expliación: One of reptilian scales ... This is the first spine, then becomes hollow and extends, as it grows, it follows from the skin and forms a cluster of hairs called beards or barbules.

In this video you can see the process of formation of protofeathers.


video

Why are important protofeathers?



For as we said, are the precursors of feathers. The appearance of the feathers is one of the most controversial issues can be found by paleontologists.

Apart from that it is not clear when they appeared, the experts, agree with in the end, why they left feathers: feathers but now used to fly (the most important feature) is considered to formation of these was a simple cold protection system. A coat of hollow scales isolated from the ravages of time.


Why were transformed into feathers?


Protofeathers are known to be used to maintain body heat and cover the body from the cold. And the fossils discovered (or most) protofeathers concentrations were located on the tail and arms. This allowed them to cover her at night and cover the cold while the temperature down ...



It is no coincidence that birds have feathers on the wings larger (called T-shirts or remiges) and tail (tail feathers or rectrices). They were the first to develop, were the first to appear were also exercising more air resistance. An important feature for small arboreal animals, leaping from branch to branch or thieves fast and small eggs.

What were the first to have protofeathers?

There are several examples of theropods (a group of two-legged carnivores, which is the T. Rex or Velociraptor). Some are: Dilong paradoxus, Sinosauropteryx, Shuvuuia, Beipiaosaurus, Sinornithosaurus, etc ...


But not only are the developers of theropods
Dinofuzz ​​protofeathers or, for example there is the Tianyulong, a small herbivore that is casting doubt on its position in the evolutionary tree and it was discovered 2 years ago.

Finally, there are still many questions to solve, finding fossils and discovering new species. A truly exciting topic of prehistoric life on our planet.

Saurophaganax, theeater of saurians.

Saurophaganax, theeater of saurians is a genus represented by a single species of theropod dinosaur alosáurido: Saurophaganax maximus.

This was a predator who was at the top of the food chain of the time. A hunter considered the gender of the Allosaurus, which rivaled the east by the Jurassic reservoirs superior.De titanic fact, Saurophaganax maximus, was greater than any Allosaurus... as a Zhuchengtyrannus. Could grow to 11 meters long (36 ft), 3.5 tons, and nearly 4 meters (17 ft) high ... But some paleontologists experts who have researched their fossils suggest that it could reach up to 15 meters (50 ft)long and nearly 6 tons (as T. Rex) y. .. apart from these data that can help us imagine a similar beast, S. maximus shared a characteristic of other species of Allosaurus: speed. Could grow to more than 10 km / h; nothing compared to a Formula One car but far more titanic than animals that were part of their diet as the Apatosaurus.

If it was a Allosurus or not is not known, but is increasingly more confident that it is not, what we do know the Saurophaganax maximus is: if it looked like the Allosaurus, the bite would be so terrible as these predators ... not good .... even more powerful and effective because it is a large species 3 meters (12 ft) and two tons heavier. We could say that if the Allosaurus was a bull shark, S. maximus would be a great white shark.


The main feature is its maximus Saurophaganax horizontal plate at the base of the dorsal neural spine, this gives a look similar to the typical fantastic dragons have a series of chevrons along the body.

Allosaurus fragilis.

When I wrote the post of Allosaurus Europeaus, also promised to write about the Allosaurus fragilis, the best-known species whose fossilized bones have more information to the expert paleontologists.


But not only important for the amount of fossil fuels. Anyone who has heard or knows anything about the dinosaur Allosaurus know that this was a T. Rex of his time. It was a prehistoric monster that was in the top of the food chain, a predator with a bite capable of prey animals as large as Stegosaurus and Diplodocus.







Fortunately for the Allosaurus did not have to deal with T.rex (who lived 80 million years later), the Spinosaurus (30 million years later) or Giganotosaurus (60 million years ago). Possibly the only species of dinosaur that could stand up was Saurophaganax that like Allosaurus lived for about 150 million years in the late Jurassic.

Their physical characteristics are:

Length: Nearly 30 feets long.
Height: 13 feets.
Weight: 6000 lb.

(T.rex- 43 for long., 18 tall and nearly 13.000 lb)

Although smaller than T. rex, Allosaurus's body was much the same way, the only notable difference was that his front arms were compared with the body, stronger and longer.

Another feature is that the Allosaurus (some experts believe) reached high speeds ... of course for these sizes of dinosaurs. Reached speeds of up to 6,2 mill / h and this speed could reach any of stalking and its victims.

Once the victim came to them with a bite attack stubborn 70-curved teeth inward dams prevented their escape, lest they (the prisoners) do without the piece of meat that was trapped in its jaws Allosaurus.

Baryonyx "heavy claw. "



As put in the post title, Baryonyx means "heavy claw. " "Heavy Claw"because its huge claws slashed to 35 cm long (1 ft) perforated skin of other dinosaurs, their prey, unable to prevent the tear resist them. "Heavy Claw"because its forelimbs were strong with powerful muscles used both to support and move to attack their prey.

Depending on the shape of the hip, suggests that to move at high speed using all four legs, but at rest or attack was on a biped.

The long neck was very inflexible and had no S-shape of many other theropods. The skull was inserted at an acute angle and not straight, as is common in similar dinosaurs. The large jaws were uniquely crocodilian in appearance and had 96 teeth, double most of his relatives. 64 of these teeth were located in the lower jaw and 32, longer at the top. It is possible that the nose has a small ridge. The upper jaw had an acute angle near the snout, a feature seen in crocodiles that helps prevent the prey from escaping.

The Baryonyx was about 9 (30 ft) meters long and weighed nearly two tons and 4 meters (12 fts) high. FIRST This dinosaur was a predator, although its features is thought that large numbers of prey were aquatic animals. The teeth of his jaw that prevented their prey bite out of her with his huge claws and drew water for prey.

The Baryonyx lived in what is now Europe 125 million years ago (Cretaceous).

BY THE WAY IT IS OF THE SAME FAMILY Spinosaurus. (Spinosauridae)


Kronosaurus.

Inside family of animals Pliosauridae are as terrible as the Liopleurodon or Predator X, marine predators of enormous size with huge heads and huge teeth. Within this group, the third in size (not so small) was the Kronosaurus. Its name means "the lizard of Cronos" (Cronos in Greek mythology was the leader of the Titans).

The Kronosaurus came to measure up to 12 meters (40 feets) and weigh 15 tons. To give you an idea: a whale comes as much up to 9 meters long (30 feets) and at most 6 tons. Another comparison: the skull of a whale "only" is 1.5 meters (5 feets), in contrast, had a skull Kronosaurus 2.7 meters (10 feets) ... Few carnivores were these dimensions and these weapons so deadly.The Kronosaurus had long, sharp teeth, not serrated. Peculiar and distinctive teeth that have made ​​it easier to differentiate between fossils and they are of a Liopleurodon or Kronosaurus.
The Kronosaurus was probably the apex predator of the time. No other animal could stand against him and had to flee if they did not become their prey. Have even found fossilized skeletons of the long Elasmosaurus, a predator of 14 meters.
Fortunately for the Kronosaurus, during the time he lived, Lower Cretaceous, there were his cousins ​​Liopleurodon or Predator X, who disappeared for more than 50 million years before the appearance of Kronosaurus.
Finally, the Kronosaurus, lived in the prehistoric waters which now include Australia and South America.

Zhuchengtyrannus.


That discovery! The cousin of the Tyrannosaurus Rex. A new tyrant among the dinosaurs of the Late Cretaceous (between 99 and 65 million years ago), a great beast, a new predator found, their fossils, currently Zhucheng in Shandong Province (east China). Therefore, it has been dubbed the Zhucheng Tyrant.

Tyrant could describe as a Tyrannosaurus Rex Zhucheng but a little smaller. For example:

The Tyrannosaurus was approximately 14 m in length, of Zhuncheng reached 11 meters. Negligible size, we ... that if you look down the street ... .... .... you make it over (not I think of another expression).

A little lower and also weighing less. T. Rex weighed about 6 tons, however, the Zhucheng weighed 4 tons.



Still, the new finding corresponds to a terrible carnivore with a powerful jaw, small arms like the Tyrannosaurus Rex. Possibly, like the T. Rex, Zhucheng could have been predator but a scavenger.

Anyway, so far are some fossils have been found from this dinosaur, a few vertebrae and mandible (with teeth certainly unique, larger in proportion to his jaw in the T. Rex). See if you still discovering more fossils and they can illustrate.

Argentinosaurus.



I have wanted to talk about the Argentinosaurus, a huge dinosaur, we talked about it when I wrote about other terrestrial animals such as colossal Amphicoelias fragillimus or Diplodocus. Well ... Argentinosaurus was THE LARGEST LAND ANIMAL STORY (after Argentinosaurus, although this is of doubtful existence). And not only was the second largest, was also a heavyweight. Let's see some data.




* The Diplodocus measuring 35 meters and 80 tons. (green)

* The Argentinosaurus 40 meters and 100 tons. (gray)

* The fragillimus Amphicoelias was up to over 45 meters and 120 tons. (red)



As shown in the video, was a huge animal, weighed, a giant terrestrial. Grew to be 20 meters high, as a 6-storey building. When stepped on, the ground rumbled like an earthquake, and a frightened herd (if there is any animal that could do that) made the ground tremble.

This herbivore ate Cretaceous pines in what is now South America. Hence its name: Argentina (Argentina) and saurus (lizard).
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