Paraceratherium



You're going to learn today that was the largest mammal known throughout history: the Paraceratherium or "near horned".

It is larger and heavier than mammoth or mastodon, larger than the Anisodon or the Giant Sloth.

WANT DETAILS?


 ESPECIES 
 MAMUT 
 MASTODONTE 
 ANISODON 
 MEGATERIO 
 PARACERATERIO 
HEIGHT  5,5 METERS  4 METERS  3 METERS  6 METERS  7 METERS
WT  10 TONS  6 TONS 3 TONS 7 TONS  15 TONS
LONG  9 METERS (con trompa) 5 METERS 3,5 METERS  6 METERS  8 METERS

Well, the Paraceratherium is a cousin of present rhino, and like this, was an herbivore, but not grazed. Its large size enabled him to eat the leaves of the tallest trees. As in the case of current rhino, his eyesight was not as developed as smell, in fact, your nasal passages were larger than its brain. That's this brainiac size (relative to its body) that is thought to not maintain complex social relationships as African elephants today. 

Large, heavy, and with a body that produces much heat, hairless skin and like the white rhino. His legs were strong and it is thought that through these, they could defend themselves from predators. The animals of this kind appeared in Central Asia during the first half of the Oligocene period, approximately thirty million years, and became extinct in the mid-Miocene period, 16.6 million years ago.




The T.Rex had feathers?



Probably yes, especially when the animals were young. When the specimens were adults, the feathers have disappeared almost completely concentrádose in line, arm and other small areas of the back.


Experts think that T.Rex could have had feathers when they were young in order to stay warm, it would be a fine layer of downy feathers. When T.Rex reached adulthood, their sheer volume would keep the heat efficiently because, in general, bulkier bodies hold heat better. A large Tyrannosaurus certainly a feather cape hinder him when refrigerated ... especially in an era that was believed to be about 6 degrees higher than today. For example, the body of modern elephants generate a large amount of heat, if we add a warm climate, it is hard to imagine that dispense with an insulating layer (either feathers or hair).


Well, if I ever see Steven Spielberg will say that, apart from that the film should be called "Cretaceous Park" by T.Rex would be missing a few feathers.

But ... Why is thought to have feathers?

The fact attributed feathers T.Rex was not formed spontaneously when a paleontologist morning wake up ... no. The idea that the "Tyrant of the saurian" had feathers is suggested by the appearance of the remains of an ancestor, discovered this year in China, and notably had feathers. But not a few, was full of feathers. It was called "Yutyrannus Huali" or Yutyrannus whose name means "beautiful feather Tyrant."

Another example was the Dilong, a dinosaur discovered in 2004 that also keeps a relationship with the T.Rex (are of the same family). This was also covered with feathers.



The Tyrannosaurus, Velociraptor, the Dilong, the Yutyrannus, and many more ... apparently was more common than we think: prehistoric carnivorous dinosaurs had feathers.
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