Having Fun with Hadrosaurs… a few sketches.

For anyone with a  taste for creativity and colour, Hadrosaurs -like this strangely crested Olorotitan- simply open the gates for a flood of possibilities. I could finally see a mounted Olorotitan specimen in the Natural History Museum in Brussels (the best dinosaur museum in Europe). It is a lightly-build animal, probably lighter than I depicted it here. But the crest of hadrosaurs is always a challenge to reconstruct (specifically the external appearance and the possibility of external attachments to it). Put that together with the rich skin topography and frill ornaments and you get as many possibilities as imagination allows you. Please note that I have reserved bright colours to display items like crests and frills… although rich skin colour patterns could have been anywhere, given the differences in shapes and size of the scales. The question of colours is… did big dinosaurs have colour vision or not? I contend that they had.I can spend many hours sketching (as this illustration from “Dinosaurs, The Most Complete, Up-To Date Encyclopedia” by Holtz/Rey shows). But the non crested ones are just as fascinating. The construction of the nostrils are a special challenge and the neck musculature is still being debated between the later most favoured “Bison” model and the slender, flexible neck.

This is a  Mexican Gryposaurus…And this one another version of Edmontosaurus…

All these are older illustrations that led to the Maisaura I included in the mural and specially the “Orchestra attack”  by Parasaurolophus from a previous post (which also tried to address the problem: how these animals would defend themselves agains the tyrannosaurs and other predators?). But I think they are  experiments worth showing. Here’s an old Maisaura tending the nest (from “Dinosaurs In The Round”).

About luisvrey

Paleo Illustration
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5 Responses to Having Fun with Hadrosaurs… a few sketches.

  1. OMG, aerostatic-faced hadrosaurs! SQUEEEE!

    Luis, these are beautiful. I think I’ve seen some of these before, but beautiful nonetheless!

    • luisvrey says:

      Yes, thanks Jaime… they are not new but it is also not new that I love to do inflatable nostrils for hadrosaurs in general! I mean, all that nostril space… it must be there for something other than just partially covered, enormous holes in the face…and the imagination runs wild… just imagine the amount of snot!

  2. Herman Diaz says:

    “(as this illustration from “Dinosaurs, The Most Complete, Up-To Date Encyclopedia” by Holtz/Rey shows)”

    That reminds me of the following questions. Many thanks in advance.

    Is Parasaurolophus generally still thought to be sexually dimorphic as in your illustration? I’ve been having trouble finding anything recent about that.

    Is L. lambei generally still thought to be sexually dimorphic as in your illustration? While that seemed to be the case last I checked (“Lambeosaurus lambei ( = L. clavinitialis, CMN 8703; [30])”: http://www.plosone.org/article/info:doi%2F10.1371%2Fjournal.pone.0031295 ), there are some new (but inaccessible) papers by Evans mentioning L. lambei, so I just wanted to make sure.

    • luisvrey says:

      There has been a lot of discussion regarding this issue recently. The main point is: we do have different skulls that >possibly< belong to the same species, or at least share too many characters. The recent challenge has been that they might belong to different hadrosaur species. However, until recently they were regarded as possibly sexually dimorphic. In any case we have six skulls of Parasaurolophus (or so), we need more material. This reminds me about the discussion of Torosaaurus being "adult" versions of Triceratops. Frankly I can't still make my mind about this… and Horner may have had it wrong… I suppose more studies are necessary.

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