T.rex | What you didn’t know about the dinosaur king...

Yes, I am finally covering base with Tyrannosaurus rex, so lets' dive into everything we know so far about this tyrant lizard king!
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Chapters:
0:00 Intro
0:40 Discovery
1:31 Description
9:13 Scavenger?...
10:22 What a weirdo...
10:56 More than one species?
12:03 Environment
All pictures are either licensed under the Creative Commons Attribution 2.0, 3.0 or 4.0 International license or come under the fair use policy
Image credit:
fredthedinosaurman.artstation...
www.deviantart.com/llrobinll/...
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www.artstation.com/kongtrex
www.researchgate.net/figure/S...
www.eurekalert.org/multimedia...
www.nationalgeographic.com/sc...
T,rex lips pictures 1, 2 and 3 by Mark Witton
Crocodile close-up Blickwinkel/Alamy
www.deviantart.com/art-minion...
Stock footage provided by Freepik, downloaded from videvo.net
Forward facing T.rex by John Conway
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www.artstation.com/artwork/3ywEB
Baby T.rex image courtesy of AMNH/D
Egg nest R. Mickens/© AMNH
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www.smithsonianmag.com/smart-...
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Multiple Tyrannosaurus’s diagram ©2022 Paul et al.
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[@ravensthatflywiththenightm7319]

Just a bit of a shame that Tyrannosaurus rex, being the very famous badass that she is, has been subjected to the incredibly tiresome Worf Effect. Constantly getting defeated and / or getting in sticky situations to "prove" how "dangerous" the new contender is, whether it's Spinosaurus or Giganotosaurus or some hybrid abomination.

[@birdiementlegen226]

Unfortunately, the T-rexes in the Jurassic Park universe are heavily nerfed in contrast to their accurate real life counterparts, while theropods of similar sizes were buffed like the spinosaurus or giganatosaurus.

[@mowabb]

This sounds like fanboy whining. The VAST majority of media displays T-Rex as the absolute unit and king that he is. It’s just a small amount of popular media that has the worf effect like the more recent JW films. But even this has little effect on the legend of t-Rex everyone on the planet knows t-Rex is the king even people who know nothing about dinosaurs. It’s more that people wish to show that no animal is invincible which is why they have t-Rex losing from time to time. But the legend is hardly tainted.

[@ravensthatflywiththenightm7319]

@@mowabb I'm truly sorry. It was not my intention to trigger you, my friend.

[@mowabb]

@ravensthatflywiththenightm7319 I’m triggered?? You’re literally whining about a fictional version of t-Rex losing in some silly movies. 😂😅try again bud

[@ravensthatflywiththenightm7319]

@@mowabb Please, calm down. This is a good channel with good people in it. There's no need to get upset.

[@tallman2210]

Fantastic presentation. Tyrannosaurs being the only large carnivore in the Hell Creek Formation is also good evidence for it being a predator. Nothing else in its ecosystem was big enough to hunt the massive Edmontosaurus and Triceratops.

[@dino-gen]

Thank you! Glad you enjoyed it 😊 yeah the size certainly poses an interesting questions as to whether t.rex got so big as to hunt those guys

[@grahamstrouse1165]

One of the current theories about T. Rex is that younger T. Rex’s filled the role of medium-sized predators in their ecosystem.

[@lucabuonviso5528]

I agree on T-Rex's filaments/feathers coverage (it not being chicken fluffy nor being godzilla scaly) although I might add that finding scaly impressions doesn't necessarely mean no feathers since they fossilize under very rare and specific circumstances and all feathered dino ALSO had scales. Awesome video as always btw. Keep it up!

[@dino-gen]

Thanks! Glad you enjoyed it 😊

[@jessiewarmbrodt8128]

From what I have seen and think about T-Rex. I think it was a opportunistic hunter. He used his sense of smell to track down already dead prey but their eyesight was so great especially with having binocular vision means it used that to focus in on prey and could range how far away the target animal was. So I believe it hunted prey as well. It was both a scavenger and a hunter in my opinion. Kind of like the garbage disposal of the Cretaceous. Anything it could eat, it would.

[@grahamstrouse1165]

I suspect you’re right. It was also most likely fairly cautious. The Cretaceous arms race between predator & prey was pretty intense. A lot of the items on Rexy’s menu were quite capable of crippling or killing it.

[@ShabanAjeti]

Like today,a lion would also scaveng if he have the oportunity, why risk injury when ther is a free meal whitout risk of injury or Dead.

[@mrwhat5094]

Dude literally everything can be reduced to garbage disposal with that logic.

[@Mr.BlingIsRizzy]

I'm proud to be in his form

[@dino-gen]

And I’m proud of my form 😊

[@66lesjo]

What a great video, factual and interesting. You have one more subscriber. Nice work, and I look forward to seeing more.

[@dino-gen]

Thank you so much, welcome aboard 😃

[@Cuckoorex]

Good vid. FINALLY someone not trying to force fluffy tyrannosaurids on the world in spite of the available evidence! I agree that the JW:D prologue or the Prehistoric Planet T.rex "filaments" seem more plausible if there was anything other than scales at all. Certainly not the thick plumage some have illustrated them with in recent years. In my opinion: I might hesitate to consider the lip question to be fully settled just yet; the tooth comparison is very interesting and as far as I'm concerned it's perhaps the strongest argument in favor of the presence of full lip covering thus far, being rooted more in empirical evidence more than conjecture and inference. However, Naish, Witton, et al, had a very limited sample size for comparing an alligator tooth to a tyrannosaurid tooth, and they've admitted that a larger sample size is definitely needed to strengthen that aspect of their hypothesis. I'm not saying it's nothing, but coupled with Carr's findings regarding Daspletosaurus and his differing interpretation of the foramina and the rugose areas on the margins of the maxilla, I'd say that we're still probably at least 1 dino-mummy away from REALLY giving a stamp on that one. I guess my point here is that the pendulum is currently swaying towards "yes, lips", but that it's swayed back and forth more than once before, and it's likely to keep swinging until better fossil evidence turns up.

[@fmac6441]

I've never seen a KZbin channel that purports to be more evidence-based, advocating for a feather-covered t.Rex. In most cases they even cite the example of the elephant to state that although there are exceptions, as a rule large animals have less hair/feathers

[@birdiementlegen226]

There are prehistoric studies suggesting that the climate back in the Mesozoic era was warmer than the present, therefore, it wouldn't make sense why an adult T-rex would be fully feathered, as it would have overheated due to its size. The most plausible theories are that younger T-rexes would be born with feathers to keep warm, but slowly shed them as they age because larger animals tend to have higher body temperatures.

[@dino-gen]

Well, to be fair, feathers are great insulators both ways, so can be good for shedding external heat. The likelihood of feathers does go down the bigger an animal gets though, at least for thermoregulation

[@grahamstrouse1165]

@@dino-genThere clearly wear Tyrannosaurs that were feathered, but most of them were a lot smaller & lived in colder climates. The young ones were quieter likely feathered to some extent. Adults…probably not. 🤷‍♂️

[@cjalexanderjr8811]

I thought it was originally named Dynamosaurus imperiosus?

[@dino-gen]

Well, Dynamosaurus was described in the same paper, as they thought it was a different animal (an armoured theropod), but soon found that material was just another T.rex. Because of the rules of taxonomy, the animal that gets named first keeps the name and even though it was the same publication, T.rex got named first a few paragraphs before Dynamosaurus lol

[@cjalexanderjr8811]

@@dino-gen Can you image our beloved T. rex being referred to as "the Dynamo" in the Jurassic Park movies?

[@AlbyCervitaur]

reminds me of a certain angry green pickle of a certain franchise..

[@ManaPotionArtisan]

The idea of feathers on a trex grew sour on me when everyone just jumped on that bandwagon and dismissed the scaly skin hypothesis even when the feathers themselves were also a hypothesis (funniest were those mocking JP rex for having scaly skin), then reverted to agressively spamming "kiddies have feathers" or "top of head plummage" hypotheses in comments and forums when the scaly skin impressions came out. Thanks to that shite there are now erroneous heavily plummed chicken rex videos floating about in youtube, some preaching to be correct. Worse is that some of those info vids look high quality, which is quite a waste when you look at them now. Look, I like the rex irregardless of its final form, but I wish people would just calm themselves whenever something new about the rex pops up, especially with speculations.

[@Cody38Super]

Why does everyone always forget about their arctometatarsil foot bones allowing it to turn faster than any large therapod?!

[@P.ilhaformosatherium]

as far as Coelurosaurs hell Tyrannoraptoran Dinosaurs go Tyrannosaurus rex truly represents us amniotes That why I'm proud of my Ancestral clade Amniota being a Synapsid (sister clade to Sauropsida) as "Blood runs thicker then water" I'll say this May the Tyrant lizard king Rest in peace.

[@adeedaas]

It’s a shame the book explained but the movie left out the reason they couldn’t see still objects. It was a part of the frog DNA being spliced in

[@Angie2343]

T-Rex's visual acuity is NOT based on movement! The movie lied to you!

[@grimnir8872]

I know it may be strange, but I think T-rex was basically the Tyranosaur version of Humans: It's adaptions seem parallel to a type of endurance, scaring and herding hunting mentality: Eyesight is by far the strongest sense humans have, allowing us to track our prey as we run it down. T-rex seems perfectly designed to do the same. Considering how many large dinosaurs working in herds, I can imagine a T-rex purposefully stalking a herd until it finds one to break off and become exhausted, then going in for a bone crushing bite.

[@grahamstrouse1165]

Except we don’t run prey down. We’re pretty shit at running, including long-distance running. What were good at is setting ambushes and killing at range.

[@toast3526]

@@grahamstrouse1165that’s cap

[@mrwhat5094]

​@@grahamstrouse1165now that's a clever way of saying you don't have a clue.

[@The_Cosmic_Yog-Sothoth]

Sorry, wrong. The "Did large theropods have lips" debate has not been solved either way. *Please read Paleontologist Tracy Lee Ford's 2019 book - Theropods did not have lips.*

[@mowabb]

Never heard of it will look into it. I find the debate fascinating and I’m cool with it either way when it comes to t-Rex lips or not. I think Rex’s head shape is so menacing it looks badass with or without lips.

[@The_Cosmic_Yog-Sothoth]

That is true, but it annoys me that the current wave of armchair dino experts think that the issue has been resolved because the BBC says so, or whatever BS. There has been no hard proof either way as of yet.@@mowabb

[@ExtremeMadnessX]

That's all because of Jurassic Park. Before the movie, in order paleo art theropods have lips. And even in the movie, Velociraptors and Dilophosaurus have lips.

[@The_Cosmic_Yog-Sothoth]

*NOTICE I SAID LARGE THEROPODS.* Not theropods in general. My hypothesis is that lips in large theropods would be selected against, due to large bite forces being used to kill prey. those bite forces would damage the lips, as reptile lips cannot be snarled upwards like lions do for example.@@ExtremeMadnessX

[@mrwhat5094]

​@@The_Cosmic_Yog-SothothKomodo wants a word with you

[@badjoker187]

The skull is weird because it's a scavenger the teeth the nostril size it's not the bad ass people make it out to be allosaurus was much more of a bad ass it took on stegosaurs and sauropods

[@rodrigopinto6676]

"Scavenger"😂😂😂😂😂

[@tomcross3000]

talk louder, stop trailing off. don't refer to t rex as "he" all the time

[@mrwhat5094]

Are you autistic? 'He' is correct unlike 'it' because 'it' is for objects not organisms.

[@ManaPotionArtisan]

The idea of feathers on a trex grew sour on me when everyone just jumped on that bandwagon and dismissed the scaly skin hypothesis even when the feathers themselves were also a hypothesis (funniest were those mocking JP rex for having scaly skin), then reverted to agressively spamming "kiddies have feathers" or "top of head plummage" hypotheses in comments and forums when the scaly skin impressions came out. Thanks to that shite there are now erroneous heavily plummed chicken rex videos floating about in youtube, some preaching to be correct. Worse is that some of those info vids look high quality, which is quite a waste when you look at them now. Look, I like the rex irregardless of its final form, but I wish people would just calm themselves whenever something new about the rex pops up, especially with speculations.