Showing posts with label prehistoricanimal.. Show all posts
Showing posts with label prehistoricanimal.. Show all posts

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


One of the first animals that we put in the blog was the big Azhdarchidae. Huge pterosaur (flying reptiles) with a wingspan of 10 meters. Well, now the largest pterosaur know all ... indeed is considered the largest flying animal of history: the Quetzalcoatlus.

The Quetzalcoatlus was by far the largest flying animal. For example, a current condor reaches 3.3 meters (11 ft) , 3.6 meters (12 ft) of an albatross, a magnificiens Argentinavis reached the 8 meters (26 ft) wingspan, large Azhdarchidae reached the 10 meters (33 ft) ... but the Quetzalcoatlus reached 15 meters (48 ft) . And while most current research suggests that reached 12 meters, still the largest flying animal ever.

The most representative species of this genus is the northropi Quetzalcoatlus, a pterosaur, with a similar appearance to other pterosaurs had a long beak, sharp and toothless. With a small head and a ridge height of almost 5 meters (16 ft) when placed standing, weighing 200 kg (450 lb) . To think that 200 kg (450 lb) is a lot for a flying animal, for example, weighs 12 kg (25 lb) condor, so some experts believe that weighed much less ... about 80 kg.

It lived in the Upper Cretaceous (Maastrichtian ago by 68-65.5 million years ago) in North America.

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)


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.


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).

Anisodon. Chalicotheriidae.

The Anisodon belongs to the family or Calicoterios Calicotéridos (Chalicotheriidae). It is very curious, strange to our eyes. The truth is that we look like a cross between two animals: a horse and a gorilla (for example).

In fact, although the head and body were similar to those of the horse, walking in a more upright, similar the gorilla and not as current horses. Its front legs were long and short the back, so I walked in a manner more similar to gorillas than horses. But the resemblance to the gorillas are not only the way to go, also had no claws, but claws and knuckles rested on them. In the front legs were huge, curved claws, probably used to get the leaves on the trees as they were browsing on forest and verifications may be standing on its hind legs to reach higher branches. They could not run, and it was his claws and great strength and size that can be served as a defense against predators. On its hind legs could reach more than 4 meters high.

Some cryptozoologists have hypothesised that (the supposedly carnivorous) cryptid from Africa, the Nandi Bear, could be a chalicothere.

Appeared in the Miocene and as mentioned in Wiki, possibly survived until "a few years. "

Bison latifrons

On with huge animals. You've ever been near a bison? Are enormous strengths. His big head and his eyes intimidates let you know that if lash, nothing could be done. The current bison weigh no more than 1,500 kg have a maximum height of 1.80 and about 3 feet long.

But there was an even greater bison, Bison latifrons was called. A huge beast, 2.5 meters high and 5 meters long. And a mass of 2,000 kg and full of strong muscles in the neck that held a big head, only his head was heavier than any of us. Not only that, his head held an antler of more than 2.5 meters long, exceeded in size by counting animals, such as Megaloceros giganteus.

Currently, the family of the largest bovine animal is Bos gaurus that can measure up to 4.60m long and 2.20m high.

The Bison latifrons get other names like giant bison or bison ice age, and who lived during the Pleistocene in North America.

Image Shayne's Photo Journal.

Gigantopithecus, the biggest monkey story.

From 1 million years ago until 300,000 years ago (just a little more), there was the bigfoot or the yeti. A real yeti no kidding. Gigantopithecus was called, and was a relative of our species. It was the largest primate WHO LIVED ON EARTH. He lived in modern-day China, India and Vietnam and may have coexisted with Homo erectus in Southeast Asia. Huge, strong, more than our nearest ancestor "Goliath" or Homo heidelbergensis, a vegetarian titan closer to orangutans.

Let's see some features.


An orangutan can weigh up to 120 kg (264.554 lb), and a gorilla (well formed) to 200 (440.924 lb). Gigantopithecus, which exceeded, it almost doubled and tripled. Weigh up to 500 kg (1102.311 lb). Like a bull. Come on, almost 3 times the weight of a giant ape.


An orangutan rarely exceed 1.75 meters in height and a gorilla more or less the same. But is that we are seeing great ape reaches 3 feet high. Much more than basketball players higher. (the highest with 2.47 (8 ft) Sultan Kosen weighed 150 kg and had a condition called gigantism)

Other things, according to Wikipedia: It was probably herbivorous quadruped, with a diet similar to the giant panda based on bamboo, possibly supplemented with seasonal fruits.

Among the causes of extinction: competition with giant pandas in the bamboo forests and the arrival of humans, which may also have eaten bamboo and used them to make tools, might have made survival difficult for Gigantopitehcus.
Indeed, some have postulated that cryptozoologists legendary beings across geographies known as Yeti or Bigfoot could be Gigantopithecus varieties that have survived to the present. mmmmmm I do not know

Shonisaurus sikkanniensis.

Ichthyosaurs were large marine reptiles with an aspect between fish and dolphin. Werereptiles, which through evolution and centuries, returned to the water. As did the whalesand dolphins, mammals that returned to the sea mainly in search of food.

Within the ichthyosaurs, are the Shonisaurus sikkanniensis. A species that is possiblythe largest marine reptile so far discovered. Although little intimidating appearance, their size allowed devour large and fearsome creatures as giant squid and fish andother smaller reptiles.

His mouth was three meters long (similar to Liopleurodon) and body size is estimatedat 21 meters. Other animal related to Shonisaurus popularis Shonisaurussikkanniensis was 15 meters long. But let's focus on the S. Sikkanniensis.

Her body was among whale and dolphin, but then she was a reptile. Their wings werehuge, his bones as well (the ribs came to be more than 3 meters) and weighs 40 tonscould reach easily.
By the way, lived in the Triassic.

Curiosity: The majority of fossils have been found in the Shoshone Mountains at an altitude of about 7000 meters above sea level.

Hurdia Victoria.

The further back in time, the prehistoric animals are rare, most unique and peculiar to our eyes. First adjustments, tests and experiments of evolution that is distributed andbranches, people still just a piece of a twig of the tree .... or less.500 million years ago during the Cambrian, appeared in the seas and oceans a trulystrange, like a squid but with teeth, larger body and gills was easier to pick up oxygen from the water and move faster. This is the Hurdia Victoria. Anomalocaris close relative to similar in many respects.

The Hurdia Victoria was a top predator of its time, ate many species with basic anatomical models and dominated the seas and oceans and the creatures of their time. Keep in mind that during his appearance was the Cambrian Explosion and manynew species were appearing and taking their first steps on dangerous waters and old.
And how was the Hurdia Victoria? Well, this prehistoric animal that is considered an ancestor of the arthropods, the large group that includes insects, crustaceans, spiders,millipedes and Chilopoda; could measure about 50 cm, which is giant compared tomost animals at the time.

His head had a couple of thorny claws (appendices), which helped carry food to hismouth, like a slice of pineapple. He had a hole in the pointy bump on the front of hishead, although the function of this organ remains unknown, since no protection couldhave been because there is underlying soft tissue. He lobes along the sides of the trunk, which were suspended large gills.

Predator and scavenger (supposedly) is considered by experts as the TyrannosaurusRex of the Cambrian.
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