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What Made You Happy Today?

TheGreatCthulhu

Their smiles below say I don't owe them my life.
ZD Legend
Joined
Jan 22, 2016
Location
United States of America
Gender
Very much a dude.
Man, I love making a correct prediction!

Back in 2017-ish, there was a whole debate on whether or not theropod dinosaurs generally had extra-oral tissues that covered their teeth.

I, and a few other people into vertebrate paleontology, including tyrannosaur experts, predicted that large tyrannosaurids like T. rex had extra-oral tissues, and that popular, toothy depictions like you'd see in Jurassic Park and other movies are moreso a cultural anachronism, not a biological one.

That is to say, the animal didn't look like that in reality.

The reason they, and I, made such a prediction?

The presence of foramina (little holes) in a row near their tooth row, which, for reptiles, exists for one purpose, blood supply to tissues, and depending on how tight the facial muscles of the animal are, you'd smile like a crocodile, or look more like a monitor lizard.

For the former, you'd get a rough skull shape, with lots of foramina everywhere. For the latter, you'd get particular foramina in a neat row along the maxilla.

T. rex, and other large tyrannosaurs more generally, and even more generally, theropod dinosaurs, probably had extra-oral tissues that obscured their teeth.

Well, that prediction was confirmed to have evidentiary basis! Gotta love it!

Here's the study in question.

Here's also the skull of a T. rex. Look along the tooth row, and you see lots of small holes in a nice, neat row. That's there because there was tissue covering that area.

https://www.si.edu/sites/default/files/newsdesk/press_releases/nhb2013-02383-crop.jpg


There's a lot of interesting things about osteological correlates in T. rex, and if you wanted to know, you can always ask.
 
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Link but Swedish

Eh?
ZD Champion
Joined
Nov 28, 2024
Location
Toronto, Canada
Gender
Potato
Borrowed two games (including a Mario one for MAR10!) Can't play until 12:30 though because my Dad has important meetings and my gaming setup is in the basement too...
 

Cetoddle769

Naydra Reincarnate
Joined
Feb 6, 2025
Location
Having a hangover
Gender
Girl
*Maybe. Mixed feelings rn.*
Getting back on this site?
This feels wrong. Maybe I should quit forever...
I feel happy about it yet guilty at the same time.
:(
 

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