T. rex Chick, Yutyrannus, & Lythronax the Feathered Tyrannosaurs

T. rex Baby in Nest

This is one of the new drawings today.  

Many paleontologists think that T. rex babies or chicks, had feathers to keep warm.  The baby T. rex would need to keep warm on cool nights.  For adult T. rex it has been hypothesized that their problem would have been how to get rid of excess heat.  However, some Paleontologist think that one day we will find evidence that adult Tyrannosaurs had feathers.  Yutyrannus  was a smaller relative of Tyrannosaurus rex from what is now China.  It DID have feathers as an adult.  

Yutyrannus

Lythronax was an even smaller Tyrannosaur that lived in what is now Utah.  Lythronax argestes whose name means Gore King... was about 24 feet or 8 meters long and weighed 2.5 tons.  It is thought that it had some feathers as an adult...or at least some proto-feathers.  The fossilized bones and a great mural of this animal can be seen at the Natural History Museum Utah...located at or near the University of Utah Campus in Salt Lake City, Utah, USA.

Lythronax The Gore King