Showing posts with label Permian.. Show all posts
Showing posts with label Permian.. Show all posts

Scutosaurus

The Scutosaurus was a prehistoric animal whose name means "reptile shield", referring to the protective layer of the skin formed by bony plates that covered much of the body. Of course, this shield had a protective purpose, its aim was to keep intact the internal parts of the attack Scutosaurus the sharp teeth of his hunters. And this saurian predators tremendous teeth were similar to the saber-toothed tiger. Most were gorgonópsidos, family of which we speak when we name the Inostranceva. A predator which we discussed two weeks ago, LINK.

The Scutosaurus lived during the Permian, 250 million years ago, and their remains have been found in what is now Asia. A continent 250 million years ago, was part of the great supercontinent Pangea.


It was a very large herbivorous reptile. Heavy, more than 500 kg. Was 2.5 meters (8 ft,) long and 1.5 (5 ft.) high. Unlike other reptiles they have their feet on the sides of the body, the Scutosaurus had under its robust body in order to keep that huge weight concentrated. They were also short, so it is understood that not run very fast (certainly more than men). I had the legs on the trunk and they were short would give the less interesting look ... if we saw it from afar, may seem a boar that had taken growth hormones ... or better yet, a giant toad ... anyway. He also had two small horns emerging from its lower jaw and pointed down. The aim of these horns was to protect the neck from those predators who try to hurt the most fragile part of the body: the neck.


Permian These animals were very numerous and found numerous fossils can complete several skeletons. Would be something like the wildebeest of the African savannah. A very large number of wildebeest that serves as food for many of the predators of the savanna. But unlike the African wildebeest, the Scutosaurus lived in small groups, think. Since maintaining that rugged body continually needed to eat grass, and knowing that during the Permian as the main feature was the desert climate, it is thought that this ancient lizard had to travel long distances to find food. If they would formed very elevated groups, had ended with the vegetation of the area very quickly, forcing them to find another that could be fertile ground for miles ... being counterproductive.


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.


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.

Estemmenosuchus



Estemmenosuchus prehistoric animal was a big and clumsy. Similar to the current rhino. The Estemmenosuchus "crocodile crowned" is named by the horns formed from the bones of the skull that are in the front and are directed upward.
He lived 225 million years ago in what is now Russia, the Permian period. Being the largest of its time with the Dimetron.
For the fossils found in the skulls, it is thought that it was an omnivore.
There are two known species of Estemmenosuchus:

1 - Uralensis Estemmenosuchus ("crocodile Coronado Urals). The characteristics of the species are the horns projecting up and out on the side of the head. Since this kind of about 4-5 meters long. The mouth contains large canines followed by small molar teeth.

2 - Estemmenosuchus mirabilis (wonderful Crocodile Coronado). This species had bony projection 2 knobs on each side of the skull, one on top facing upwards apparently pointing horns and other similar sides uralensis.
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