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Favorite Dinosaur Reconstructions
Topic Started: Sep 28 2013, 09:05 PM (305,553 Views)
CyborgIguana
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Ulquiorra
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CyborgIguana
May 8 2016, 06:19 PM
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Now if only there was an environment behind them.
Edited by Ulquiorra, May 9 2016, 06:19 AM.
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babehunter1324
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So Nash finally continued with his series of lipped prehistoric animals...

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Let the hate flow...
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I haven't yet read the article, I hope it will mention the small bony flanges found in some machairodonts since honestly I think it was a lot more likely that those were more related with keeping the canines moisture than massive upper lips.

Edit: Yeah not his best, though good enough for me to at least consider it a possibilty, not the first time that bulldog like lips had been proposed for Machairodonts, however, and the theory has previously being considered the less parsimonious one.

Edited by babehunter1324, May 10 2016, 03:56 AM.
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Incinerox
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Āeksiot Zaldrīzoti

The alternative is that the upper teeth fit into pockets in slightly loose lower lips. Which is probably what Thylacosmilus did, using those lower jaw flanges as a sort of base for such lips.

Kinda like a hunting knife holster.
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babehunter1324
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Yeah that's what I was thinking too, could help explain the bones flanges on Smilodon skull.

Duane Nash was asked about it I think in DA and he thinks his large lips theory is more likely. Dunno.
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CyborgIguana
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Despite not fully agreeing with his bulldog-lipped T. rex, I do think he might be onto something about machairodonts.
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Acinonyx Jubatus
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I AM THE UNSHRINKWRAPPER!

I'm inclined to agree with Incinerox on this point with the lower-lip-pockets thing. Nash brushed this idea off in his blog post without really giving an explanation as to why not, despite it being a perfectly reasonable hypothesis. Or there could be a mix between the two, with enlarged lip pads covering the upper half of the fang and lower pockets covering the lower half.
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Incinerox
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Acinonyx Jubatus
May 10 2016, 12:48 PM
I'm inclined to agree with Incinerox on this point with the lower-lip-pockets thing. Nash brushed this idea off in his blog post without really giving an explanation as to why not, despite it being a perfectly reasonable hypothesis. Or there could be a mix between the two, with enlarged lip pads covering the upper half of the fang and lower pockets covering the lower half.
This is precisely what I think.

Basically, when you look at modern big cat mouths, you find that when the jaws shut, the teeth are contained within the lower lips anyway. The teeth are rarely fully sheathed by the upper lips alone. The upper and lower lips have to meet somewhere to seal the mouth shut properly. This is kind of the primary reason lips exist. I'm not convinced that Nash's drawing does that successfully.

However, Nash does have a VERY good point about exposed teeth, based on how, yes, it's stupid to leave such enlarged and brittle teeth exposed to the elements, where they can be beaten, broken, exposed to unwanted bacterial infection, or just worn down. But also because when you actually take a big cat skull, there's almost NO space between the upper canines and the lower jaw. There's no way you'd be able to fit gums AND lips in that space at all. Either there were no lips there at all, or the canines fit inside the lower lips. The former never happens, and the latter ALWAYS happens in terrestrial carnivores.

The result would probably look a bit less droopy than his image, but still more droopy than a standard big cat, and a hell of a lot more flabby under the lower jaw to make space for enlarged canines.

He's definitely onto something here regardless.
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DinoBear
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Chinese Water Deer. Herbivorous and certainly not a cat, but take it as you may



Anyways, Homotherium keeping its teeth hidden like a clouded leopard
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Incinerox
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He already made a point about why tusks are not viable analogues for saber teeth.
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Jon Sam
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Incinerox
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Incinerox
May 10 2016, 02:54 PM
Acinonyx Jubatus
May 10 2016, 12:48 PM
I'm inclined to agree with Incinerox on this point with the lower-lip-pockets thing. Nash brushed this idea off in his blog post without really giving an explanation as to why not, despite it being a perfectly reasonable hypothesis. Or there could be a mix between the two, with enlarged lip pads covering the upper half of the fang and lower pockets covering the lower half.
This is precisely what I think.

Basically, when you look at modern big cat mouths, you find that when the jaws shut, the teeth are contained within the lower lips anyway. The teeth are rarely fully sheathed by the upper lips alone. The upper and lower lips have to meet somewhere to seal the mouth shut properly. This is kind of the primary reason lips exist. I'm not convinced that Nash's drawing does that successfully.

However, Nash does have a VERY good point about exposed teeth, based on how, yes, it's stupid to leave such enlarged and brittle teeth exposed to the elements, where they can be beaten, broken, exposed to unwanted bacterial infection, or just worn down. But also because when you actually take a big cat skull, there's almost NO space between the upper canines and the lower jaw. There's no way you'd be able to fit gums AND lips in that space at all. Either there were no lips there at all, or the canines fit inside the lower lips. The former never happens, and the latter ALWAYS happens in terrestrial carnivores.

The result would probably look a bit less droopy than his image, but still more droopy than a standard big cat, and a hell of a lot more flabby under the lower jaw to make space for enlarged canines.

He's definitely onto something here regardless.
Quoting myself because DK did a thing.

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Jules
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Mihi est imperare orbi universo

I could've sworn you said your mammal-drawing skills were subpar, DK.

On an entirely different note:

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Okeanos
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CyborgIguana
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Apparently that illustration is included in a Saurian field guide that will be delivered to anyone who contributes more than $15 to the Kickstarter.

Which means I need to start saving up fast.
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