Shop Forum More Submit  Join Login
Nemegtosaurus skull by palaeozoologist Nemegtosaurus skull by palaeozoologist
This is a reconstruction of the skull of Nemegtosaurus mongoliensis based primarily on the original description of Aleksander Nowinski, but supplemented by the re-description by Jeffrey A. Wilson as well as the description of the new nemegtosaurid Tapuiasaurus. My interpretation is a bit different than portrayed by these authors.

The grayed-out parts of the skull indicate material that was not preserved.

Refs--

Nowinski, A. 1971. Nemegtosaurus mongoliensis n. gen., n. sp., (Sauropoda) from the uppermost Cretaceous of Mongolia. Palaeontologica Polonica 25: 57–81.

Wilson JA (2005) Redescription of the Mongolian sauropod Nemegtosaurus mongoliensis Nowinski (Dinosauria: Saurischia) and comments on Late Cretaceous sauropod diversity. Journal of Systematic Palaeontology 3: 283–318.

Hussam Zaher, Diego Pol, Alberto B. Carvalho, Paulo M. Nascimento, Claudio Riccomini, Peter Larson, Rubén Juarez-Valieri, Ricardo Pires-Domingues, Nelson Jorge da Silva Jr., Diógenes de Almeida Campos (2011). "A Complete Skull of an Early Cretaceous Sauropod and the Evolution of Advanced Titanosaurians". PLoS ONE 6 (2): e16663. doi:10.1371/journal.pone.0016663
Add a Comment:
 
:iconalgoroth:
Algoroth Featured By Owner Jun 26, 2011  Professional General Artist
This is a question, not a critique: do you think sauropods had cheeks at all? Your reconstruction seems to show them. Since that would be an important thing to try and get correct in a painting, I'd like to know your thoughts.

And was the lower jaw so undershot as you've shown? Just asking; I've no way of knowing, since nemegtosaurs aren't sold in my grocery store...
Reply
:iconpalaeozoologist:
palaeozoologist Featured By Owner Jul 1, 2011  Hobbyist General Artist
I suppose it depends on what you mean by "cheeks", if you count a thin piece of elastic tissue covering part of the jaw as seen in this condor here, then yes. Do I think they had mammal style cheeks or even ornithischian style cheeks? Probably not. They don't have any anatomical correlates that would suggest cheeks IMO.

As for the lower jaw, it comes directly from the description. So yes, it is undershot.
Reply
:iconpaleo-king:
Paleo-King Featured By Owner Mar 8, 2011  Professional Traditional Artist
This is actually one of the best Nemegtosaurus skull restorations I've seen. The size of the bony nares looks a lot more reasonable than the huge ones in Salgado, 1997. The other new restorations are also not quite as accurate as this one. The jaws are dislocated though... the rear of the lower jaw needs to be tilted higher, so there's a bit less height to the rear of the head overall.
Reply
:iconpalaeozoologist:
palaeozoologist Featured By Owner Mar 9, 2011  Hobbyist General Artist
Thanks. I'm not sure it's one of the best restorations of Nemegtosaurus out there, but I'll take the compliment anyways ;)

I actually kinda like Salgado and Calvo's (1997) reconstruction, I forgot about that one though when I was doing this. The narial arch is arched too much though, probably, and their infratemporal fenestra isn't quite the right shape. I think their Quaesitosaurus restoration is not very good, on the other hand.

I agree that I should change the lower jaw, but it'll have to wait a bit...
Reply
:iconpaleo-king:
Paleo-King Featured By Owner Mar 11, 2011  Professional Traditional Artist
I think Salgado and Calvo's versions were just awful. It's like as soon as the field recognized that titanosaurs were related to brachiosaurs, they jumped the gun and tried to make two very derived lithostrotians resemble brachiosaurs so much as to be nearly indistinguishable from them, to overcompensate for decades of diplodocid-like restorations. Not pausing to think that perhaps in so many millions of years, they wouldn't necessarily look like brachiosaurs anymore, and may have even converged on diplodocids in some respects since those niches were left wide open for the most part. Which we now know they did thanks to complete skulls for Rapetosaurus and Tapuiasaurus.

Quaesitosaurus has a notoriously difficult head to restore, but out of the few attempts I've seen, I'd say Wayne Barlowe's version tops them all. I really wish that guy painted more dinosaurs.
Reply
:iconpalaeozoologist:
palaeozoologist Featured By Owner Mar 13, 2011  Hobbyist General Artist
Well, neither Rapetosaurus or Tapuiasaurus are known from complete skulls, both are missing most or all of the nasals, and Rapetosaurus is missing it's premaxillae, so we don't even really know that it looked as much like a diplodocid in the skull as often thought.
Reply
:iconpaleo-king:
Paleo-King Featured By Owner Mar 14, 2011  Professional Traditional Artist
They're complete enough that you can get the idea. :XD:
Reply
Add a Comment:
 
×




Details

Submitted on
March 8, 2011
Image Size
136 KB
Resolution
1033×676
Link
Thumb

Stats

Views
1,810
Favourites
19 (who?)
Comments
7
Downloads
44

License

Creative Commons License
Some rights reserved. This work is licensed under a
Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.