Well, I have to admit it.
It was tempting to draw large tyrannosaurs with a heavy coat of feathers. It proved VERY tempting. But I stuck to my guns and held out on it. Why? I wasn't convinced the evidence would favor it.
I had already seen pictures of skin impressions attributed to the neck and chest of T. rex, and they were scaly. But this wasn't published and therefore people were casting doubt on it (I wonder if they did the same when Yutyrannus photos showed feathers, before it was formally published and described?). Now some may ask what I have against feathered tyrannosaurids, since that is the new orthodoxy in much of paleo-art (just as lizard-like restorations were orthodoxy in the time of Knight and Burian). The answer is actually: nothing. But when talking about giant tyrannosaurids there was no actual evidence of feathered skin. Not only that, but being roughly 1.5 times the length of the still taxonomically controversial Yutyrannus, the largest T. rexes at 12 meters were ov