Feathering in coelurosaurs

["Mary Nalasco" <m38jeep@hotmail.com>]

Hello, All-

I've seen some nice pictures of Gallimimus, Therizinosaurus, Utahraptor, and 
other large coelurosaurs depicted with feathers. Yet all tyrannosaurs, even 
the smaller ones about the same size of some these coelurosaurs, seem to 
have scales. I was just wondering around what size range feathers would 
start to become more of a hassle than they're worth, and if there's any 
reason why some of the small tyrannosaurs wouldn't have feathers.

Thank You.
M. Nalasco
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