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New Tyrannosaur with crocodile-like Facial
Topic Started: Mar 30 2017, 01:19 PM (1,258 Views)
Jon Sam
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Posted Image

Posted Image

New tyrannosaurid from the upper Two Medicine Formation of Montana, Daspletosaurus horneri.

Paper :

http://www.nature.com/articles/srep44942
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Acinonyx Jubatus
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I AM THE UNSHRINKWRAPPER!

... Facial what? Did they find skin impressions?
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the dark phoenix
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King of wonderlandia

Named after Jack horner I assume?
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babehunter1324
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Acinonyx Jubatus
Mar 30 2017, 03:15 PM
... Facial what? Did they find skin impressions?
It's actually mostly based on bone texture.
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heliosphoros
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A) Birds have lips, so it should be noted that this conclusion would apply only to tyrannosaurs.

B) Crocodiles don't have mouth scales; their face "scales" are actually broken skin. So this study is inaccurate in its conclusions
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BossMan, Jake
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Son of God

Honestly don't know what to draw from this theory...if the lips theory is debunked then surely there would be more evidence to draw upon such a conclusion
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Paleodude
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ex-Krampus

I'm not the first to say it but the paper is pretty bad when it comes to showing evidence. Paper mentions several specimens but only provides a fairly poor quality picture of one. Not to mention the bone texture can still be seen as pathological or post-mortem damage to the bones themselves over time. Overall while it does bring forward some interesting points I can't see this as more than a large claim without a large amount of evidence to back it up.
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magpiealamode
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No good hero is a one-trick phony.

Also what purpose would the facial sensitivity serve in tyrannosaurs? My understanding is that crocodiles make use of it underwater for detecting pressure waves. But surely that wouldn't translate into a terrestrial theropod.
Unless... *gasp* Daspletosaurus was aquatic!

But yeah, crocodilians are super derived so I am definitely suspicious of this one.
Edited by magpiealamode, Mar 30 2017, 08:46 PM.
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stargatedalek
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I'm not slow! That's just my moe!

It also fails to provide any evidence correlating these patterns in crocodilians to their lack of lips, let alone does it provide significant enough information to claim this should apply to a very different animal.

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Acinonyx Jubatus
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I AM THE UNSHRINKWRAPPER!

I'm also skeptical, if only for the fast that super-sensitive skin in an area where conspecifics are frequently trying to inflict as much pain as possible is generally a bad idea. Assuming Daspletosaurus was as face-bitey as Tyrannosaurus.
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Incinerox
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Āeksiot Zaldrīzoti

The bone texture is more likely an indicator of a cornified epidermis. Like rhino or hippo faces. Or Saurian's T. rex.
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stargatedalek
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I'm not slow! That's just my moe!

It could even be a preservation artifact.
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DinoBear
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The anagenetic lineage found for Daspletosaurus is pretty cool. Reminds me of Triceratops in Hell Creek.

Also, btw, that lip thing isn't the only bit in the paper. Damn shame it is the only thing being talked about.
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magpiealamode
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No good hero is a one-trick phony.

Anagenesis has nothing to do with the Rule of Cool.
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Incinerox
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Āeksiot Zaldrīzoti

stargatedalek
Mar 31 2017, 11:59 AM
It could even be a preservation artifact.
Well it's found on numerous theropods.

Don't know why they only decided to make a paper on it now. With this theropod which has been awaiting a description for literally years.

It's not fair on the species, really.
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