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Majungasaurus by PLASTOSPLEEN Majungasaurus by PLASTOSPLEEN
A quick Majungasaurus portrait inspired by NashD1's newest blog post. It's been a while since I've done a non-birdy theropod.
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:iconpristichampsus:
Pristichampsus Featured By Owner Feb 19, 2017  Professional General Artist
Can somebody explain to me why that blogger thinks that maniraptorans and tyrannosaurs had big doofy dog jowls and things like that? It makes almost no sense. In my opinion the anatomy points to lizard-like lips with a bird rictus at the edge of the mouth.
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:iconthatdinosaurguy:
Because of the vestigial lip-like organs that birds still have today: leesbirdblog.files.wordpress.c…

And his rationale was that no lizard, in past or present, has ever evolved a beak after switching from carnivore to herbivore/omnivore, despite having lizard-lips. If theropods that switched from carnivore to herbivore had lizard-lips then there would be no need for the evolution of beaks, just like lizards yet Therizinosaurs and Oviraptorosaurs have beaks. Meaning they had to of had some loose hanging lips. However, this only applies for herbivorous/omnivorous theropods, more basal theropods like Megalosauriods, and Carnosaurs probably had lizard lips.
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:iconpristichampsus:
Pristichampsus Featured By Owner Feb 22, 2017  Professional General Artist
That's pretty weak reasoning.
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:iconthatdinosaurguy:
ThatDinosaurGuy Featured By Owner Feb 23, 2017
Well, how do you explain the absence of beaks in lizards or pseudosuchians which switched to herbivory? If theropods had the same or similar lips why did they evolve beaks?
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:iconpristichampsus:
Pristichampsus Featured By Owner Feb 23, 2017  Professional General Artist
There are pseudosuchians with beaks, Effigia and Lotosaurus.

The idea that you can infer what dinosaurs were like by showing what DIDN'T evolve in other creatures is really quite silly in my opinion.

Also, why does he portray raptors and tyrannosaurs with huge floppy, mammalian jowls, when he is trying to explain what the corners of bird mouths evolved from? That is a pretty big leap. More likely, they just had lips along their jaws which resembled the thin, rictus-type area of emus and ostriches. But of course, he doesn't portray them like that, he gives them big doofy dog jowls based on the flimsiest of reasons.

Also, the osteological correlates for dinosaur lips look a good deal like those of lizards, I think we should rely on that, instead of this garbage "if X had this then Y had this" reasoning.
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:iconthatdinosaurguy:
ThatDinosaurGuy Featured By Owner Feb 25, 2017
I should have said crocodiles instead of pseudosuchians. My mistake. 

Yes I know it sounds crazy, but we do have examples of theropods who transitioned from carnivore to herbivore in their lifetimes, by way of growing a beak and losing teeth. Enter Limusaurus: www.cell.com/current-biology/p… there is simply no need for a carnivore who has lizards lips to switch to beaks. Lizard lips are already ideal for precisely picking off parts off a plant. Loose floppy dog jowls won't get the job done, hence with theropods needed to evolve beaks. 

He only portrayed Tyrannosaurs and Dromaeosaurs with dog jowls for shock value. He admitted that in his most recent post. In actuality a T. rex's rictus probably looked a lot more like RJ Palmer's "GrizzlyHawk" which was probably what Nash was going for.

"I think we should rely on that, instead of this garbage 'if X had this then Y had this' reasoning."

Welcome to the world of Paleontology bruh. Almost everything is "if X had this then Y had this" Why do you think we can say Smilodon had fur without evidence of such?  

  
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:iconpristichampsus:
Pristichampsus Featured By Owner Feb 25, 2017  Professional General Artist
I do agree that T-rex and raptors had lips or rictus, RJ Palmer type stuff is probably far closer to the mark.

The osteological correlates on theropod jaws seem to indicate a thin lip of some sort, as to if its lizard like or rictus like, that's another question.

Okay, let me clarify. I'm not talking about phylogenetic bracketing, that is perfectly okay. But the reasoning behind this particular example is far more convoluted, saying that lizards never evolved beaks, therefore dinosaurs must have had rictus instead of lizard lips. It is a few too many steps to be considered all that parsimonious. If it means that maniraptorans had a rictus-like lip that would look like that of a bird, but all over the face, that's fine. I just find that the idea they had huge floppy dog jowls to be absolutely ridiculous.
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:iconplastospleen:
PLASTOSPLEEN Featured By Owner Edited Feb 20, 2017
No idea, bulldogs are specifically bred for that feature and it seems that no other animal ever had them, and I find it especially unlikely for a reptile to have them. I agree with the lizard lip + bird rictus interpretation.
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:iconpristichampsus:
Pristichampsus Featured By Owner Feb 20, 2017  Professional General Artist
:D
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:iconpcawesomeness:
PCAwesomeness Featured By Owner Jan 24, 2017
Keratinous face, I presume?
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:iconplastospleen:
PLASTOSPLEEN Featured By Owner Jan 24, 2017
Yep
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:iconpcawesomeness:
PCAwesomeness Featured By Owner Jan 25, 2017
That's intriguing.
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:icondontknowwhattodraw94:
Dontknowwhattodraw94 Featured By Owner Jan 13, 2017  Hobbyist Traditional Artist
You sneaked those feathers nicely in here ;) (Wink) 
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:iconplastospleen:
PLASTOSPLEEN Featured By Owner Jan 14, 2017
Britney Spears - Apply make up 
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:iconqbliviens:
Qbliviens Featured By Owner Jan 12, 2017  Hobbyist General Artist
Eyelashes! Yes!
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:iconkirbyniferousregret:
KirbyniferousRegret Featured By Owner Jan 11, 2017  Student Traditional Artist
I actually like this one much better than mine!
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:iconplastospleen:
PLASTOSPLEEN Featured By Owner Jan 11, 2017
Me too
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:iconkirbyniferousregret:
KirbyniferousRegret Featured By Owner Jan 12, 2017  Student Traditional Artist
Cheeky
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:iconplastospleen:
PLASTOSPLEEN Featured By Owner Jan 12, 2017
;)
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:icondinobirdman:
DinoBirdMan Featured By Owner Jan 11, 2017  Student Artist
That's cool
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:iconplastospleen:
PLASTOSPLEEN Featured By Owner Jan 11, 2017
Thank you
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:icondinobirdman:
DinoBirdMan Featured By Owner Jan 11, 2017  Student Artist
You're welcome
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:iconantonellisofbbender:
AntonellisofbBender Featured By Owner Jan 11, 2017  Student Filmographer
cool
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:iconplastospleen:
PLASTOSPLEEN Featured By Owner Jan 11, 2017
:)
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:iconantonellisofbbender:
AntonellisofbBender Featured By Owner Jan 11, 2017  Student Filmographer
;)
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:iconcocoamushroom:
CocoaMushroom Featured By Owner Jan 11, 2017
cute Wink/Razz 
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:iconplastospleen:
PLASTOSPLEEN Featured By Owner Jan 11, 2017
Thanke
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:iconartevo-des-lavabo:
Artevo-Des-Lavabo Featured By Owner Edited Jan 11, 2017  Hobbyist Digital Artist
What mascara is he using ?
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:iconplastospleen:
PLASTOSPLEEN Featured By Owner Jan 11, 2017
Good mascara
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:iconbh1324:
bh1324 Featured By Owner Jan 11, 2017
Great job, those feathery eye lashes, though...
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:iconplastospleen:
PLASTOSPLEEN Featured By Owner Jan 11, 2017
Britney Spears - Apply make up 
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:iconhublerdon:
HUBLERDON Featured By Owner Jan 11, 2017  Hobbyist General Artist
Noice!
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:iconplastospleen:
PLASTOSPLEEN Featured By Owner Jan 11, 2017
Thank you
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:iconlorenzo-franzese:
Lorenzo-Franzese Featured By Owner Jan 11, 2017  Hobbyist Traditional Artist
Interesting interpretation of the horn.
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:iconplastospleen:
PLASTOSPLEEN Featured By Owner Jan 11, 2017
Thanks
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:iconraptorkillsall:
raptorkillsall Featured By Owner Jan 11, 2017  Hobbyist Traditional Artist
Cool!
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:iconplastospleen:
PLASTOSPLEEN Featured By Owner Jan 11, 2017
:)
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:icontheunknownplanet:
TheUnknownPlanet Featured By Owner Jan 11, 2017
nice
is it a carnosaurs kind dino?
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:iconplastospleen:
PLASTOSPLEEN Featured By Owner Jan 11, 2017
Well, if you mean Carnosauria (Allosauroidea), no, Majungasaurus is a Ceratosaurian, not a Carnosaur.

If you mean Carnotaurus, kinda. Carnotaurus and Majungasaurus are both Abelisaurid Ceratosaurians, but Carnotaurus is a Carnotaurin Abelisaurid, and Majungasaurus  is a Majungasaurinae Abelisaurid.
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:icontheunknownplanet:
TheUnknownPlanet Featured By Owner Jan 12, 2017
Ok ;)
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:iconxiphactinus:
Xiphactinus Featured By Owner Edited Jan 11, 2017  Hobbyist Traditional Artist
No, it's abelisaurid ceratosaur.
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:iconjustarandomgourgeist:
JustaRandomGourgeist Featured By Owner Jan 11, 2017  Hobbyist Digital Artist
Majunga got dem eyelashes on fleek
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:iconplastospleen:
PLASTOSPLEEN Featured By Owner Jan 11, 2017
Britney Spears - Apply make up 
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