Showing posts with label crocodile.. Show all posts
Showing posts with label crocodile.. Show all posts

Proterosuchus



This post refers to the end of the Permian (250 million years ago), just as is produced the great extinction that wiped out 95% of life that lived the Earth.

We talked a little moment in the history of the Earth, but that influenced the species appear in the next million years. Let us see:

It is thought that the Permian extinction was caused by the continued and exaggerated emanations of lava and gases that literally suffocated the Planet. Some events that ended with the great synapsids that ruled the prehistoric Earth, and they were a kind of curious animals, with characteristics of mammals, but reptiles ... some are called "mammal-reptiles".
The peculiarity of these animals is that they were warm-blooded. And although in principle we think this is an advantage over cold-blooded animals, the truth is that at the decisive point of extinction, was a real problem. We must consider that for an animal to keep warm blood should eat up to 20 times more calories than a cold-blooded animal. A treat for a time when food was becoming scarce.


In a world dark and wounded animals that died were the first warm-blooded. Instead of cold-blooded animals could resist. Now when entrael Proterosuchus in history.

The importance of the survival of this genus (Proterosuchus) is that, because it, envolved all the dinosaurs and birds we know today. If Proterosuchus not have survived, probably we would not know either the T.Rex, or to Spinosaurio, or the Argentinosaurus.

And how was this prehistoric animal?

Well, to get an idea, the Proterosuchus was similar to a three-meter crocodile. Hunted in ambush near streams and lakes. Like crocodiles, his eyes on the top of his head to stalk their prey. The snout ending in hook.

Finally, gender is Proterosuchus in the history of evolution, an individual as important as what could be the Pikaia or Ichthyostega.

Rhamphosuchus crassidens.


Today we will talk of the largest crocodile that ever lived. More than the Sarcosuchus Imperator and the Deinosuchus, which are of similar size (15 meters) and weighs about the same (9 tons) ... dimensions not insignificant by comparison with the currently largest crocodile, the marine crocodile weighs 1.5 tonnes  and 6 meters long.



The name of this giant prehistoric crocodile is Rhamphosuchus crassidens, "crocodile-peak". Rhamphosuchus crassidens is the largest species of a genus of which we speak: gender Rhamphosuchus and is an extinct relative of the False gharial, a crocodile of the family Crocodylidae  with a thin elongated snout. Although the False gharial is 4 meters and weighs 250 kg, whereas the Rhamphosuchus crassidens is 18 meters long (although other estimates do not exceed 15 m) and 1 tons. An aquatic animal although very heavy to move nimbly on land, in ponds and marshes became the superpredator of water during the Miocene Epoch in the Indian continent.



Due to the size, strength and width but also elongated snout, the Rhamphosuchus crassidens could devour prey larger and more varied than today's crocodiles Tomistominae subfamily (such as the False gharial). The variety and development of the Miocene ungulates were a valuable contribution to the diet of this prehistoric animal. Among their prey could find elephants, antelopes, deer-like animals, giant pigs, horses with huge claws, camels, rhinos, crocodiles and even other great apes and the orangutan or an ancestor of ours: the great and strong Gigantopithecus. All the animals who came to drink. Possibly, their diet was changing as he grew older, because while their size increased so did his jaw and of course his power and, at first had to settle mainly fish and small vertebrates. Even then devoured everything that breathed.

Kaprosuchus saharicus.

Kaprosuchus saharicus was a huge crocodile that lived in the Upper Cretaceous in Niger (Africa). This dinosaur is not extremely large as it could be other prehistoriccrocodiles as Deinosuchus or Sarcosuchus Imperator. "Only"average 6 meters but what is striking is his face. He had a terrible predator face, large protruding teethabove and below the jaw and a rough bump on the snout (emerging from thesquamous and parietal) giving it an aggressive appearance that recalls when wolvesbaring their teeth defensive position . We, as the most terrible dragon fantasy filmstoday.

Another difference between the Kaprosuchus saharicus and other crocodiles is thatthe basins of the hojos projected forward, not upward. Had stereoscopic vision, similar to the hunters like lions or wolves.
In fact, this animal was a predator prehistoric Earth, but also water. Because land isattributed hunter strong legs that allowed him to pursue their prey with great speed and run at a certain height from the ground (to be cococrilo).

Finally, thanks to their appearance, their disproportionately large, sharp fangs, was given the name of Kaprosuchus, meaning crocodile boar. Referring to the tusks of theboars that tend to stand out from the muzzle. And saharicus that their bones werefound in the Sahara.
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