The Integument of Hadrosaur Crests?

[ZoPteryx]

Does anyone know if there have been any skin impressions found associated with hadrosaur cranial crests?  Some reconstructions depict them as seemingly being covered with cornified skin or horn while others add scales, sometimes rather large scales, such as this juvenile reconstruction:



Anyone have a solution?

[Neosodon]

Very good question. This is just an idea but I think they may have been covered with a thin layer of skin that they could fill with blood for display like what has been proposed for Stegosaurus.

[irimali]

this post on mark witton's blog:  http://markwitton-com.blogspot.com/2015/12/dinosaur-scales-some-thoughts-for.html

shows a diagram of known skin impressions from 10 different hadrosaurs.  unfortunately none of them include crest skin  

Very good question. This is just an idea but I think they may have been covered with a thin layer of skin that they could fill with blood for display like what has been proposed for Stegosaurus.

If you're right it would explain the lack of skin impressions from hadrosaur crests.  thin skin wouldn't last as long as the tougher hide covering other parts of the body.

[Jose S.M.]

Irimali that post was a very interesting read, thanks for sharing it.

[Nanuqsaurus]

 

Very good question. This is just an idea but I think they may have been covered with a thin layer of skin that they could fill with blood for display like what has been proposed for Stegosaurus.

I read somewhere that Stegosaurus probably couldn't do the WWD-style blood pumping display, because the plates were covered with keratin so you wouldn't see any change in color.