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Childhood further ruined: T-Rex likely hid its teeth behind lips

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MMarston

Was getting caught part of your plan?
Can a crocodile’s smile reveal whether dinosaurs had lips? What if lips and gums hid most of dinosaur's teeth?

New findings from University of Toronto vertebrate palaeontologist Robert Reisz challenge the idea of what therapods might have looked like when dinosaurs roamed the earth.His research will be presented today at a conference at U of T Mississauga – and it's already making headlines.

“When we see dinosaurs in popular culture, such as in the movie Jurassic Park, we see them depicted with big teeth sticking out of their mouths,” Reisz says. Large dinosaurs, such as Tyrannosaurus rex, bare a ferocious grin, while smaller creatures such as velociraptors are shown with scaly lips covering their teeth.

The U of T Mississauga expert was curious about which version might be most accurate. “We have very little information about dinosaurs’ soft tissue,” he says.

For clues about how therapods might have appeared, he looked to modern-day reptilian predators like crocodiles and monitor lizards. According to Reisz, lipless crocodiles have exposed teeth, much like a Jurassic Park predator, while monitor lizards conceal teeth behind scaly lips that are similar to the movie version of velociraptors.

Lips help to protect teeth, in part by helping to enclose them in a moist environment where they won’t dry out, Reisz says. Crocodiles, which spend their time submerged in water, don’t need lips for protection. “Their teeth are kept hydrated by an aquatic environment,” Reisz says.

Reptiles with lips, such as monitor lizards, typically live on land (much like their movie counterparts) where their teeth require different protection. From this, Reisz concludes that dinosaur teeth would likely have been covered by scaly lips.
https://www.utoronto.ca/news/did-dinosaurs-have-lips-ask-university-toronto-paleontologist

Personally, I thought this was already a given but other people can also freak out over this and feathers now.

Must go faster if old.
 

rtcn63

Member
tumblr_n43uobYPeN1qm8lnwo2_400.gif
 

Tugatrix

Member
So the velociraptors like the t-rex were lip teeth turkeys? alright still scary just not on the kind we were used to
 

Concept17

Member
Trex as a giant meat-eating chicken scares the shit out of me still. Way more frightening than Jurassic Park Trex.

All twitchy and shit, cocking its head around.
 
We're gonna find out next that T-Rex's were actually hella nice animals and are just misunderstood. They don't wanna eat you they just wanna give you a hug.
 

nkarafo

Member
Trex as a giant meat-eating chicken scares the shit out of me still. Way more frightening than Jurassic Park Trex.
Even if it looked like a chicken, it would be physically impossible to move like one since any living thing with such mass wouldn't be able to.
 

demon

I don't mean to alarm you but you have dogs on your face
Is there a chance we ever will be able to create a dinosaur with dna from their bones? I wish we could see them like in the moviez.

Their bones don't exist anymore, just their fossils, which aren't really their bones, and thus don't contain their DNA.
 
Its crazy that they can figure this stuff out.

He actually used a very simple logical guess that it could have been done a few decades ago.

This won't surprise paleontologists, they know the popular image of dinosaurs has always been manipulated a bit to make it more impactful, even before having cinema (how the drawing of possible dinosaurs and how the bones were mounted in museums, for example).
 
We're gonna find out next that T-Rex's were actually hella nice animals and are just misunderstood. They don't wanna eat you they just wanna give you a hug.

But because of their short arms, they could not, and thus became the fearsome, lonesome predators we know today
 
We're gonna find out next that T-Rex's were actually hella nice animals and are just misunderstood. They don't wanna eat you they just wanna give you a hug.
This is already true. I've read things over the years about how they're slower than we thought and that they just ate already dead animals. Just a big slow softie (with poisonously bad breath).
 
Yeah, lips in dinosaur depictions has gone back and forth for a while. The most common supposition for a lack of lips was a comparison to dinosaur's modern relatives--birds and crocodiles. But birds have beaks, and crocodilians likely lost their lips independently, so they're not really good analogues at all.
 
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