Spinosaurid’s nasal crests

[Concavenator]

Even though all spinosaurids had nasal crests, I have seen many ways of representing these, from triangular shaped, to rounded... and so on.Which is the most correct way to represent nasal crests on spinosaurids?

[Halichoeres]

It seems to me that whatever bony portion of the crest is preserved is the minimum size/shape of the crest in life, but it very likely would have had some keratin overlying it. I think there's plenty of room for speculation around that basic shape, which already varies among the taxa whose skulls are preserved.

[Dinoguy2]

In pterosaurs, the bony part of the crest is often less than a quarter of the true height. Not saying that's the case for spinosaurids, but you never know...