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Camarasaurus likely possesed a keratinous sheath
Topic Started: Apr 5 2017, 04:06 PM (708 Views)
stargatedalek
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I'm not slow! That's just my moe!

AKA a beak in more or less vernacular.

https://link.springer.com/article/10.1007/s12542-016-0332-6
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Acinonyx Jubatus
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I AM THE UNSHRINKWRAPPER!

Can I just be the first to say...

wait what
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magpiealamode
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No good hero is a one-trick phony.

Interesting. The second re-evaluation of dinosaur mouth tissue in like a week.
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DinoBear
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Nah, thing is from November.
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magpiealamode
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No good hero is a one-trick phony.

It looked like the date was March 2017. Regardless, this is a bit of a tough sell for me, mostly because I am currently having a bit of difficulty picturing a beak with incisors.
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TheNotFakeDK
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200% Authentic

No, he's right, this was indeed originally published in November 2016, and has been discussed about between then and now.
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magpiealamode
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No good hero is a one-trick phony.

Oh okay. I've not seen it till now, what has some of the discussion been?
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BossMan, Jake
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Son of God

Have we got a picture of this beak? I'd be interested in knowing how it looked on the animal to the best of an artists degree
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Yi Qi
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It's more likely that the implied tissue they attribute to a beak actually belong to fleshy lips.

Beaks and teeth are mutually exclusive (in the same parts of the jaw line, that is).

http://dinogoss.blogspot.com.br/2011/04/youre-doing-it-wrong-birds-with-teeth.html

Although Bonitasaura did have some keratinous cutting like structure, but again, mostly on a part of its mouth where there are no teeth.

https://www.ncbi.nlm.nih.gov/pubmed/15729763
Edited by Yi Qi, Apr 5 2017, 11:24 PM.
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Incinerox
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Āeksiot Zaldrīzoti

Anything that can be explained by a beak here, can also be explained by fleshy gums and lips.

Was the same as it is now.

Never forget that there is a polarising bias in some paleontologists as to whether dinosaurs had lips or exposed teeth. Carr being the most notable as of late.
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stargatedalek
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I'm not slow! That's just my moe!

Yi Qi
Apr 5 2017, 11:18 PM
It's more likely that the implied tissue they attribute to a beak actually belong to fleshy lips.

Beaks and teeth are mutually exclusive (in the same parts of the jaw line, that is).

http://dinogoss.blogspot.com.br/2011/04/youre-doing-it-wrong-birds-with-teeth.html
This only applies to "true beaks", which is to say a keratinous structure covering the outside and gums of an animal. As your citation even explains, creatures like Hesperornis still has keratinous facial coverings, they just didn't cover the gums.
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