I just finished five months of generals, and during that time my artistic output has been next to nothing (evidently). Having taken such a long drawing hiatus, it'll be tough getting back into it. But that's not what this journal entry is about. I mentioned that introductory point because I have an interesting concept I've wanted to draw for some time but could never muster the mental energy to draw it, because college fries the brain like that. That concept is this entry's namesake.
Crested tyrannosaurs aren't speculation, obviously. Guanlong is the most prominent example, although other proceratosaurids were potentially crested as well. Even the structure adorning the skull of Yutyrannus can be interpreted as a crest. Most of these are all smaller and more basal tyrannosaurs, obviously. The crests are thus presumably basal characteristics as well, lost in the more derived tyrannosaurids. Or were they? I couldn't help but notice that many tyrannosaurids have rather scabrous snouts. That is, they're not smooth; as though they anchored something in life that has evaded preservation. This observation has previously been the method to my madness in reconstructing my tyrannosaurs with chicken-like combs and other such fleshy structures. However, is it feasible that as tyrannosaurs grew larger and more derived, their bony and presumably keratin-sheathed crests were reduced to scabrous anchors for lighter-weight keratinous crests (the sheaths and crests being homologous)? Presumably for sexual display, these structures might have looked similar to the crests of Guanlong or Yutyrannus, although they could have potentially adopted entirely unique designs as well.
One of my friends took the liberty of drawing this concept, giving Tyrannosaurus a Yutyrannus-like crest: dj-miller.deviantart.com/art/C…. If anybody else is interested in illustrating this concept, be my guest.