The T. rex Lip Debate is Over!

Поделиться
HTML-код
  • Опубликовано: 22 окт 2024

Комментарии • 867

  • @godslaughter
    @godslaughter Год назад +1130

    I am not gonna lie to you, birds DO have lips, but not at the front of their mouths because their dentary and maxilla are covered in keratin. They still have lips in the corners of their mouths and as long as we don't get something that contradicts it, I'm gonna avidly keep giving non-avian dinosaurs bird-like rictuses. Bird lips are very flexible, it's always so fascinating to study them when dealing with some corpses.

    • @catpoke9557
      @catpoke9557 Год назад +146

      The keratin is also shaped like lips in most birds. I don't know why more people don't point this out, but the beak isn't flat. The top 'lip' overlaps the bottom one in most birds, and if they had teeth, they'd be covered by that lip.
      Also, maybe I'm crazy, but I'm pretty sure I see lips on the borealopelta mummy fossil. And I think it's weird for people to assume that other dinosaurs had lips, but not theropods. If you ask me, that assumption just shows that they are deciding based on how cool it looks, not how accurate it is. The only dinosaurs I've seen depicted lipless is theropods, and on the rare occasion, sauropods. But usually those are depicted with lips. I really think this displays a real bias in how people depict dinosaurs. Cool sharp teeth should be flaunted in lipless glory, and boring dull teeth should be hidden away by gums and lips. But that's not scientific at all.

    • @patreekotime4578
      @patreekotime4578 Год назад +95

      @@catpoke9557 same as the most common argument against feathers... it doesnt look cool or scary. Idk, but the idea of a 16 foot tall eagle sounds prettty heckin scary to me.

    • @zabijavak2329
      @zabijavak2329 Год назад +7

      yeah i see it all the time when my birds bite me

    • @Roboticus_Prime_RC
      @Roboticus_Prime_RC Год назад +21

      @@patreekotime4578 I have never once seen someone make the "feathers aren't scary" argument. I've only seen it as a strawman to deflect when people point out the scaly skin impressions found of the T-Rex.

    • @MastodonMann
      @MastodonMann Год назад +2

      Time to be a menace and give this information to people to disturb them

  • @patreekotime4578
    @patreekotime4578 Год назад +963

    Whats funny is that many of us grew up with depictions of dinosaurs with lips. In the early 80s most books and media that I encountered were full of art from the 1920s-1960s (presumably because it was out of copyright) and those typically showed dinosaurs as giant lizards... complete with lips. It wasnt until Jurassic Park and the tidal wave of dino renaissance depictions popularized the toothy look which always felt a bit weird IMO.

    • @youtubestudiosucks978
      @youtubestudiosucks978 Год назад +55

      Dinosaurs didnt have dentist so some might had gotten an overbite

    • @TheMightyN
      @TheMightyN Год назад +27

      Indeed. However, the distribution of "lips" wasn't offset to trend. Many theropods in Jurassic Park (not Jurassic World) developed traits where the lips size varied extensively--the Coelurosaurians fairing in diversity where the Spinosaurus and Dilophosaurus were in the middle ground.

    • @JurassicReptile
      @JurassicReptile Год назад +33

      The raptors and dilophosaurus didn’t have teeth that stuck out so it was only T.Rex without lips in the first film.

    • @TheMightyN
      @TheMightyN Год назад +11

      @@JurassicReptile Nope. Observing the portions of Jurassic's marketing resourced obviously brought people to view it as such. But anyone--with a trained memory--whom rewatches the first film, will notice the animatronic of the Dilo has exposed teeth; consumers influenced by the slew of marketing depicting the _Dilophosaurus_ in favor of its colorful frill less likely noticed this. Even to the trained eye's observation, the most accurate JP Dilophosaur products (busts, maquettes, etc.) suggest the teeth pass the jaw margin or arrangement limits the full closing of the mouth--enough for them to be exposed.

    • @Qbliviens
      @Qbliviens Год назад +9

      To be fair, most of the dinosaurs in jurassic Park do have lips! Just not the T. rex

  • @alioramus1637
    @alioramus1637 Год назад +196

    I keept saying it and fighting with people. Lips are the norm in tetrapods. Exposed teeth is usually a derived feature, evolved for a specific purpose.

    • @MybeautifulandamazingPrincess
      @MybeautifulandamazingPrincess Год назад +1

      Which specific purposes? That makes no sense

    • @necroseus
      @necroseus Год назад +14

      ​@@MybeautifulandamazingPrincess In crocs, that purpose it to allow water to leave their mouths while still retaining whatever food is inside, so far as I am aware.

    • @necroseus
      @necroseus Год назад +3

      I can't fix my spelling mistake because your name is too long to see that section of my comment on mobile xD. Oh well!

  • @keepcalmlovedinosaurs8934
    @keepcalmlovedinosaurs8934 Год назад +328

    I'm an author. And its really frustrating when you find out new data about certain dinosaur anatomy [spinosaurus and dinosaur vocalizations e.g.] you have to rewrite whole chapters. For the past two years I was with the lipped theropod notion.
    Keep up the good work man! 😎👍

    • @geckoraptor9397
      @geckoraptor9397 Год назад +34

      I saw a biology schoolbook from 2017 and there was information about dinosaurs from 1950 everything was outdated af 🤦

    • @Dramn_
      @Dramn_ Год назад +47

      @@geckoraptor9397 almost all schoolbooks have information that is out of date, some of it is INSANELY bad lol

    • @treystephens6166
      @treystephens6166 Год назад +7

      We will never know for certain.

    • @garyhenshaw7138
      @garyhenshaw7138 Год назад +7

      ​@@treystephens6166 only true statement I've read

    • @a.nonimus6705
      @a.nonimus6705 Год назад +4

      Do you write fiction or nonfiction? I'm not familiar with much dinosaur fiction, seems like it'd be a difficult thing to write.

  • @quantumpalmtree
    @quantumpalmtree Год назад +556

    now imagine a world where dinosaurs get lip injections because they discovered vanity with time

    • @hanselmansell7555
      @hanselmansell7555 Год назад

      T-Sex

    • @beeeeeeeeeeg
      @beeeeeeeeeeg Год назад +9

      nahh💀💀

    • @johnsamu
      @johnsamu Год назад

      Besides big lips also big boobs and a big ass, quite a "feast"for the eyes.
      The way things are going now with new discoveries it might even become reality.
      Remember how Spinosaurus has changed over the past few years.

    • @quantumpalmtree
      @quantumpalmtree Год назад

      @@beeeeeeeeeeg The Californicus Kardashianausorus

    • @endel12
      @endel12 Год назад +31

      Duck-lipped dinosaurs

  • @daintybeigli
    @daintybeigli Год назад +526

    The uncovered teeth of crocs seem to be more towards the exception than the rule. I appreciate when you discuss ethical issues! Scientists can be as problematic as any other group of humans.

    • @FirstDagger
      @FirstDagger Год назад +68

      Goes to show how modern crocodiles aren't the living fossiles they were made out to be initially.

    • @RaptorChatter
      @RaptorChatter  Год назад +65

      Glad to know it's appreciated!

    • @juanyusee8197
      @juanyusee8197 Год назад +39

      ​@@FirstDagger The bizarreness of modern crocodiles is underappreciated by most honestly.

    • @minutemansam1214
      @minutemansam1214 Год назад +22

      @@FirstDagger Honestly crocodilians as a group aren't even that old. Birds are an older clade. Crocodilians only date to about 90 million years ago. Heck, the famous Sarcosuchus wasn't even a crocodilian but a more distantly related kind of crocodyliform.

    • @nunyadeelings8292
      @nunyadeelings8292 Год назад +26

      ​@FirstDagger I think people are unknowingly referring more to crocodylomorphs than they are to crocodilians specifically. Crocodylomorphs in general are really old. The entire group is over 2 times older than the crocodilians and also includes them.
      It'd be kind of like saying "humans aren't the living fossils we know them as" when people are referring to mammalia as a whole, and not specifically genus homo.

  • @sampagano205
    @sampagano205 Год назад +815

    I don't care what the science says, I'm going to die on the hill of t Rex having extremely impressive and movable lips specifically adapted for kissing.

    • @blaustein_autor
      @blaustein_autor Год назад +57

      That's just common sense. Evolution can't keep you from hugging *and* kissing!

    • @Jopekos
      @Jopekos Год назад

      So you are dumb, be happy with your ignorance.

    • @M1N1molo
      @M1N1molo Год назад +3

      BoT. Rex

    • @soxpeewee
      @soxpeewee Год назад +2

      Kiss my t Rex

    • @Smokkedandslammed
      @Smokkedandslammed Год назад +9

      Momma said T Rex always kissin cause they arms too short to hold hands!

  • @carlorielmendez6505
    @carlorielmendez6505 Год назад +10

    Imagine if the guys that hated feathered dinosaurs a few years back used the same argument with dino lips as "not scary like they used to in the old movies" logic.
    Leave those guys in Komodo island and let's see if they last a week among those giants without pissing their pants.

    • @Aethuviel
      @Aethuviel 10 месяцев назад +3

      Or crocodile monitors. They have much, much larger teeth than a Komodo dragon, and even though they don't look that large, they could actually kill a person through sheer blood loss.

  • @beerasaurus
    @beerasaurus Год назад +240

    Who wouldn’t want lips as kissable as Tyrannosaurus?

  • @miquelescribanoivars5049
    @miquelescribanoivars5049 Год назад +37

    > It probably isn't over.
    Though it deffinitively has been reinforced

    • @RaptorChatter
      @RaptorChatter  Год назад +14

      That's fair. I think the evidence prevented in this paper though is going to be pretty hard to disprove in any meaningful way

    • @miquelescribanoivars5049
      @miquelescribanoivars5049 Год назад +13

      @@RaptorChatter Yes, but there's some aspects that are likely to draw criticism, such as the very small sample size of the study of the enamel's histology.

    • @randomuser12237
      @randomuser12237 10 месяцев назад

      ​@@miquelescribanoivars5049 Thank you for being ony sane one who admitted this.

  • @petrairene
    @petrairene Год назад +55

    So, if lips keep teeth moist, and therefor the contemporary crocs don't have them because they are aquatic, did terrestrial crocs in the past develop lips? After all multiple lines of crocs became secondarily terrestrial.

    • @nicolassenmartin1018
      @nicolassenmartin1018 Год назад +33

      That's the opposite : multiple lineages of crocodilomorphs became semi aquatic. Crocs came out first as terrestrial animals and likely originally had lips. However, with their lifestyle ane hunting technic as snap feeders, they probably reduced lips and so on until now. Technically, crocs kinda still have lips but it doesn't cover their whole dentition : the flesh around are gums covered by skin and you can notice that the gum is pretty thick around those teeth.
      So it is likely that crocs started lipped and through time and on multiple occasions they may have lost lips.

    • @RaptorChatter
      @RaptorChatter  Год назад +34

      Maybe. With things like Kaprosuchus it's hard to say, because they had some notably large teeth, so may have just done the thicker enamel thing. I imagine someone will take a look at that at some point

    • @petrairene
      @petrairene Год назад +5

      @@nicolassenmartin1018 That's of course true. And the question is, were the secondarily terrestrial croc lines terrestrial for long enough so evolution had time to work it's magic and re-develop them. Also toothed whales didn't lose their lips despite 50 million years of aquatic life. How about mosasaurs and ichthyosaurs and other secondarily aquatic reptile lines? Did they have lips? So why did aquatic crocs lose their lips while the cetaceans did not?

    • @nicolassenmartin1018
      @nicolassenmartin1018 Год назад +9

      @@petrairene it may be more related to their feeding strategy for that. Whales, Mosasaurs and Ichthyosaurs are active marine predators. Some may be more of snapping predators like Ichthyosaurs but the others use to be crunch feeders : taking deep bites in their preys (I exclude mysticete). For the case of Plesiosauria and most Sauropterygians those were potentially lipless though given their teeth morphology and feeding strategy.
      Also, we could use the new method developed by the scientist team on those animals to determine if those animals had lips or not.

    • @LuisAldamiz
      @LuisAldamiz Год назад +3

      I understood from the video that crocs can expose their teeth because they are heavily enameled (ivory-ish) and that acts as protection when outside water (which can be very long times, especially when hybernating in drought periods), so it's possible that crocodilians did not have lips, it depends on how thick the enamel was basically (same applies to elephant and boar tusks apparently).

  • @theargonianmercenary184
    @theargonianmercenary184 Год назад +90

    There’s something perplexing about how up in arms some people can get about whether or not some dinosaurs had lips. People have literally purposed sauropods had TRUNKS for crying out loud! This seems like a small, small thing to get up in arms about, no matter what side you’re on.

    • @PlantKitty
      @PlantKitty Год назад +8

      Honestly, that's not the craziest idea

    • @WhatIsSanity
      @WhatIsSanity Год назад +5

      I'm hardly a paleo enthusiast anymore and wasn't one for very long so I'm not up to date.
      All that said I haven't seen a single Sauropod skull with a potential attachment point for a trunk. What sauropods where people proposing had trunks?

    • @phoebusapollo8365
      @phoebusapollo8365 Год назад +17

      The difference is a lot of people grew up with the non-lipped look (specifically Jurassic Park) so there is a lot of nostalgia and good memories invested in dinosaurs not having lips. It’s why people get so heated about it.

    • @theargonianmercenary184
      @theargonianmercenary184 Год назад +7

      @@phoebusapollo8365 I had a feeling it was about something of that stripe, but I had my doubts considering the velociraptors in JP did have lips.

    • @theargonianmercenary184
      @theargonianmercenary184 Год назад +5

      @@WhatIsSanity it was a hypothesis proposed by Walter Coombs in 1975, but I agree that the evidence supporting this idea is pretty lacking. Even though Coombs was huge with regards to his findings relating to sauropods on land rather than in bodies of water, he also suggested sauropods nostrils resembled elephants or other mammals. The neck would have certainly made the trunk redundant, but even so, it’s just a crazy idea I threw out (though there are crazier ideas purposed, think the dinosaur sex-lakes or aliens being responsible for the K-Pg mass extinction).

  • @sauraplay2095
    @sauraplay2095 Год назад +21

    That’s interesting, and I always liked the look of lips.

  • @quinnbuffet3825
    @quinnbuffet3825 Год назад +5

    I can't believe people look at an Iguana or a Komodo Dragon and say "Oh yeah a lack of lips would be totally less threatening."

  • @jayconstantine5928
    @jayconstantine5928 Год назад +98

    Thankyou! That verifies my research on my Spinosaurus! I agonised over this, but after reading Mark Witton's Paeleoartist's Handbook, came down on the side of lips. I think he looks much better with them. (The Spinosaurus that is!)

    • @hplovecraftcat
      @hplovecraftcat Год назад +32

      ​@Acceleration Quanta how tf do you know that? Are you a time traveler?

    • @maverick2560
      @maverick2560 Год назад +13

      @Acceleration Quanta Sources?

    • @RaptorChatter
      @RaptorChatter  Год назад +20

      Yeah, I really hope someone takes a look at some of the Baryonyx skulls in England and is able to make some of these inferences about Spinosaurids.

    • @catpoke9557
      @catpoke9557 Год назад

      I always feel like the evidence points towards spinosaurids being lipless in the front and lipped in the back, but honestly, I think either depiction works. I'm not a paleontologist so I'm not very good at analyzing these things. As for other dinosaurs, though, so far they all seem fully lipped to me. Of course some particularly large teeth in certain species may or may not have protruded from the lips, like the tusks of pigs or the canines of tasmanian devils. Still, I believe they had lips over the whole mouth except where a beak would be.

    • @classicgalactica5879
      @classicgalactica5879 Год назад +1

      How can you possibly hope to verify whether or not creatures which have been extinct for tens of millions of years did or did not have lips? Unless an impression of a theropods skull which had recently died is someday found, the lips or no lips debate will continue, unabated.

  • @nita7703
    @nita7703 Год назад +45

    Always love updates about old drama

    • @maverick2560
      @maverick2560 Год назад +10

      I wouldn't really call scientific debates "drama".

    • @Mobius118
      @Mobius118 Год назад +8

      @Maverick
      Considering how influenced scientific learning is influenced by politics and bias nowadays, it very much is drama

  • @skybluskyblueify
    @skybluskyblueify Год назад +135

    Could this mean that the sabre -toothed cats may have had their longest teeth covered by lips? What about the marsupial sabertooth Thylacosmilus?

    • @RaptorChatter
      @RaptorChatter  Год назад +94

      Thylacosmilus I would expect to have longer tooth coverings because the lower jaw has more area to support the structures. In Homotherium at least there was a paper last year which suggested maybe only the tips would be showing, and that they could have been kept damp by the lower lip tissue, and by residual saliva from the upper lip.

    • @LuisAldamiz
      @LuisAldamiz Год назад +44

      I was watching yesterday something about hippopotamuses and how those massive canines (and the also very threatening incisives protruding forward) get fully covered by the mouth when closed reminded me of sabertoothed felines (in reverse but anyhow). After watching this video I realized also that there's a reason why ivory is not made out of any tooth but only those that are exposed to the environment such as elephant or boar ones. So I'd go with the rule of thumb mentioned here: if it's not ivory-ish, it was inside the mouth most of the time.

    • @scatman9166
      @scatman9166 Год назад +30

      Depends on what sabre tooth we’re talking about. Smilodon likely didn’t have covered fangs, while the less extreme ones like Homotherium probably did similar to a clouded leopard

    • @tjarkschweizer
      @tjarkschweizer Год назад +29

      Remember that mammalian lips are unique among tetrapods. The upper lips often lap over the lover ones. This allows elongated teeth to poke out as can be seen in some small deer species.

    • @TalenkauenTV
      @TalenkauenTV Год назад +32

      Mammal lips are widely different from reptile ones. Mammalian saber teeth should not be something to consider in a dinosaur lip debate

  • @gowzahr
    @gowzahr Год назад +5

    "Imagine needing lips to keep your teeth moist."
    -crocodilians

  • @Kanyon85
    @Kanyon85 Год назад +6

    I remember having T-rex toys in the late 80s which were still depicted as standing upright, dragging their tails on the ground like a kangaroo. It's fascinating how science and biology is all connected.

  • @dennismason3740
    @dennismason3740 Год назад +7

    Thank you, Ezekial. No derf theropods.

  • @dennismason3740
    @dennismason3740 Год назад +50

    I am officially calling this Rexy Lips Day.

  • @catherinehubbard1167
    @catherinehubbard1167 Год назад +19

    I wonder if the extinct land crocs, which presumably spent little time in water, had lips to keep their teeth moist.

    • @RaptorChatter
      @RaptorChatter  Год назад +19

      Bold claim I'd love to see it backed up with a source.

    • @maverick2560
      @maverick2560 Год назад +1

      It's possible that semi-aquatic crocodilians and related animals lost lips over time, with lips potentially being ancestral to archosaurs, only being lost secondarily in certain groups. As mentioned in the paper, early terrestrial crocodylomorphs likely had lips as well, based on skull anatomy.

    • @RaptorChatter
      @RaptorChatter  Год назад +15

      Based on Hesperosuchus I'd expect they did have lips. Although with some, like Kaprosuchus, there were notably long teeth, so there's more argument there for them to have just had thicker enamel like other crocodylians

    • @jessehunter362
      @jessehunter362 Год назад +20

      @Acceleration Quanta have you ever had a filling removed? You feel the pain of dry teeth *quickly*.

    • @Dramn_
      @Dramn_ Год назад +12

      @accelerationquanta5816 except they do. Try going with a completely dry mouth for a few days.

  • @paleoberd
    @paleoberd Год назад +30

    I think lips on dinosaurs make them look more like a living, breathing animal :] but that's just my opinion
    I think that hadrosaurs with cheeks, and ceratopsians with cheeks, make them look real, too

    • @nutyyyy
      @nutyyyy Год назад

      So are crocs not living animals?

    • @paleoberd
      @paleoberd Год назад

      @@nutyyyy Not what I meant m8

    • @AnonningAnon
      @AnonningAnon Год назад

      ​@@nutyyyy Crocs live in water half the times, so they don't need lips to moisten their teeth, to prevent them from rotting (same hypothesis is applied to Spino, ichty, etc).

    • @Aethuviel
      @Aethuviel 10 месяцев назад

      Every land animal has lips covering the teeth, there is no reason theropods shouldn't have lips. Proponents of lipless theropods should take a look at the skulls of crocodile monitors and reticulated pythons, and imagine how paleo artists with no knowledge of snakes or lizards would depict them. Whether hadrosaurs and ceratopsians had cheeks is another matter, which has to do with how they used their teeth. If they chewed their food or just gobbled it up.

  • @geckoraptor9397
    @geckoraptor9397 Год назад +7

    Also a bizare thing is that the jp rex didnt have lips there but the raptors did

    • @robertjackson1813
      @robertjackson1813 8 месяцев назад

      I dont agree. The tyrannosaur did have lips, but it did have exposed teeth.

  • @petersmythe6462
    @petersmythe6462 Год назад +1

    "Varanus Salvadorii"
    The best pet horror show for you.

  • @karnewarrior
    @karnewarrior Год назад +2

    This video brought to mind the image of a Tyrannosaur investigating an object using much more motile lips than one would expect, not unlike an ape might.
    Which is unlikely to be accurate, but is definitely a new sort of uncomfortable cute.

  • @The_Cosmic_Yog-Sothoth
    @The_Cosmic_Yog-Sothoth Год назад +7

    Looks like two major paleontologists Thomas Carr and Julien Benoit are "Completely unconvinced" by this new paper's findings. *The debate is not over.*

    • @christianvaixco196
      @christianvaixco196 Год назад +2

      👍

    • @minutemansam1214
      @minutemansam1214 Год назад

      The debate has basically been over for years. Lips is an ancestral condition for all tetrapods, I would argue all jawed vertebrates. So the null hypothesis is that dinosaurs had lips until proven otherwise. So it's on those who doubt they have lips to demonstrate their claims.

    • @tjarkschweizer
      @tjarkschweizer Год назад

      Thomas Carr. The guy who actually claimed that theropod and crocodilian jaw textures look anything alike.
      I feel like he lost his right to have a valid opinion on this subject.

    • @The_Cosmic_Yog-Sothoth
      @The_Cosmic_Yog-Sothoth Год назад +3

      @@tjarkschweizer He's the world's foremost expert on tyrannosaurs. When you can claim something similar, come back to me. In the mean time, stop the plank act.

    • @tjarkschweizer
      @tjarkschweizer Год назад

      @@The_Cosmic_Yog-Sothoth I am not discrediting his expertise on Tyrannosaurs. I am specifically criticizing his claim of theropod and crocodile foramina looking similar enough to justify slapping a croc-smile on theropods.
      That was his argument in 2017 and can be refuted by simply looking at the jaws of these animal groups.

  • @JohnJohn-yl4ko
    @JohnJohn-yl4ko Год назад +10

    I imagine T-Rex looking like a Pit Bull on two legs both so cute yet so terrifying

  • @fishfreak2001
    @fishfreak2001 Год назад +2

    Crocodiles also replace their teeth through out their entire life. They don't have as much of anneed to preserve them like dinosaurs do.

  • @aylakreelak
    @aylakreelak Год назад

    I appreciate you addressing that there was an abusive environment for the students, always appreciate that kind of stuff

  • @rsmac11
    @rsmac11 Год назад +1

    I don't know why the algorithm chose to send me to your channel. Perhaps it is a just and loving algorithm. Regardless, as a nerd who has no formal training in archeology, anthropology, paleontology, and no post graduate qualifications in any meaningful hard science, I like this. I will stay.

  • @WarrenPeace007
    @WarrenPeace007 Год назад +1

    The easiest way to tell if birds have lips is to see if your local Chinese restaurant serves Birds’ Lips Soup

  • @KnickKnacksPlasticPlanet
    @KnickKnacksPlasticPlanet Год назад +4

    Ok, prevailing science now thinks tyrannosaurus had lips - cool. Now, let's fight about whether it could snarl! That's kinda badass actually. 😊

  • @carlorielmendez6505
    @carlorielmendez6505 Год назад +1

    There are mammals today that have exposed teeth without prolonged water dips. Boar tusks and that tiny fanged deer(ungulates are the biggest exception to the moisture requirement for enamel rule). In terms of prehistoric mammals, Smilodon tends to have very long sabers (6 inches) that have no evidence of being covered in skin. Homotherium though have evidence of enough skin material on their lower jaw to match their still huge but manageable 3-in fangs so they can still be using their lips, just the opposite side (this is how modern big cats keep their canines wet). Elephant ivory, it turns out, is mostly dentine with collagen fibers crisscrossing the structure lattice, so it doesn't need to get that prolonged moisture requirement.

  • @romxxii
    @romxxii Год назад +1

    Giving t Rex lips makes me think of komodo dragons.

  • @DawnFire05
    @DawnFire05 Год назад +12

    I didn’t know that about the lips keeping teeth moist to help with ware and tear. It makes me think about land crocs. When a crocodylomorph became fully terrestrial was it in their best interest to also adapt lips to cover their teeth? I think that could honestly say a lot about one of our most mysterious crocodylomorphs (and my personal favorite extinct baddie) kaprosuchus. I’ve always been a personal believer of the hypothesis that kaprosuchus had a foot in both worlds. It’d stalk its prey from the water and would chase them down over short distances on land. The fact that kaprosuchus had so many large teeth that would be sticking out seems like it would place it more into the water, especially since its teeth were probably its primary hunting weapon. It also makes me curious about smilodons and the other saber toothed mammals of our past, as well as our own modern saber tooths. Smilodon, unlike kaprosuchus, had the benefit of being able to use its claws as a main weapon, and wouldn’t necessarily be relying solely on its teeth. And water deer have fangs, but they aren’t hunting and putting its teeth up to those weekly stresses. It makes me wonder if these factors all mean that kaprosuchus spent a considerable amount of time in the water. It also makes me wonder if its teeth and ramming skull were more a strange result of sexual display and secondarily a result of hunting. But it also seems like it’s foramina? (nerve holes) were more terrestrail animal oriented, though I’m no biologist so this is just my looking at the skull and comparing it to the pictures you showed. It’s skull was smooth but it looks like a ridge of holes along the teeth, other than the tip of the skull full of small holes. I like to imagine kaprosuchus as an animal similar to qianosuchus, both a predator of land and water. I hope we find more kaprosuchus fossils soon, I love this animal and the mystery that shrouds it. It’s such a great animal for someone like me who loves speculative biology to, well, speculate on.

    • @lorencalfe6446
      @lorencalfe6446 Год назад +3

      You can sorta tell if they have lips from their bones; orderly deep grooves at the base of the teeth on the maxilla and mandible are usually attachment sites for soft tissue like gingiva which cover the teeth and need to be protected by some sort of lips!
      This was my ‘argument’ and its cool seeing the professional paleontologists saying similar things.
      (also, the reason croc teeth dont need covering is partially attributable to the thick hard tissue covering the pulp. I think they went over this in the video)

    • @DawnFire05
      @DawnFire05 Год назад

      @Master Baiter Yeah that's what I surmised

  • @jessquinn6106
    @jessquinn6106 Год назад +21

    Honestly, I have been drawing lips on dinos since I was a kid in the late 70's and 80s. Just because it made sense to me. I was always disgruntled as a kid and teen that movies and Paleo books at the time just drew skin on top of skeletons with no muscle mass between the two. So, my adding lips to therapods was just common for me to add. I guess I was way ahead of the game thinking "Would not the dry air and windstorms damage exposed teeth?" Years later University confirmed my theory when I was majoring in Archaeology.

  • @leechild4655
    @leechild4655 3 месяца назад

    5:19 this is what I was looking for. those indentations in the jaw bones above the teeth. This would be where muscles of the lips would attach so, they probably could make fart sounds with its lips and breathing. Probably a part of their vocabulary no doubt.

  • @adamtruong1759
    @adamtruong1759 Год назад +2

    Thb, I'm surprised that it's only now this is happening, and I find it hilarious that it's almost treated like something new.

  • @michellebeckham5310
    @michellebeckham5310 Год назад +1

    Ornithischian dinosaurs probably didn't have full lips. Many theropods are beaked as well. I think studying beak evolution will help understand lip and lipless conditions. For instance do you need lips to develop a beak or is being lipless help a beak to form?

  • @LordNezghul
    @LordNezghul Год назад +1

    Plot twist: their tongues were large enough to cover the teeth.

  • @StalkerNaturaliste
    @StalkerNaturaliste Год назад +8

    Julien Benoit have very interesting argument AGAINST lips. He note that beaks are incredibly common in dinosaurs relatives, it appeared several times in birds, several time in non avian theropods, in ornithischians, pterosaurs, even crocodilomorpha and of course, in turtles. Plus there is an hypithesis on disposable ramphotheca in sauropods. On the other hand there is very few instances of beacks in lepidosauromorpha and other reptiles, the only case I can think of is Eretmorhipis. It's also very rare in synapsids (platypus and dicynodonts).
    It's sounds like evolving a beak in archelosauria is very easy and happens everytime the diet is suitable for it. Like they all have an already a hardened keratine around the mouth with teeth just embeded in it.

    • @saidi7975
      @saidi7975 Год назад +1

      And I personally found his argument more convincing than the repeated ad-nauseum "cus teeth wil crack". That is only a mammal concern. Problem is, most people go for the functional argument instead of even entertaining the phylogenetic one. YET, for feathers, everyone will go for the phylogenetic card . Funny how it goes ;)
      As a matter of taste, I think they look cool either way.

    • @StalkerNaturaliste
      @StalkerNaturaliste Год назад +1

      @@saidi7975 he also have a an argument against representation of lips in paleoart. Or other floppy parts. Paleoart is an illustration of the scientific data, it doesn't have to be extra realistic, a skin wrap with neutral colors is probably not realistic but it kind of show the fossil itself. Lips cover the teeth, one of the most studied part of a fossil, dont cover it unless you have solid litterature backing up your aesthetic choice.

    • @minutemansam1214
      @minutemansam1214 Год назад

      @@StalkerNaturaliste Considering lips are the ancestral condition of all tetrapods, you have to have evidence that dinosaurs didn't possess lips. Lips are the null hypothesis, so not one actually have to provide evidence that they had them.

    • @minutemansam1214
      @minutemansam1214 Год назад

      @@saidi7975 Phylogenetically dinosaurs probably had lips. Lips are the ancestral condition of ALL tetrapods, I would go so far as to say all jawed vertabrates. So lips are the null hypothesis. You'd need positive evidence that dinosaurs didn't possess lips, not the other way around. Modern crocodilians are highly specialized predators that were likely ancestrally lipped while birds actually DO possess lips in the corners of their mouths.

    • @tjarkschweizer
      @tjarkschweizer Год назад +1

      This argument can be easily turned around by proposing that beaks form from lips. Meaning that the presence of beaks points to an ancestral lipped condition.
      Benoit also appears to be ignoring that lips are the basal condition for tetrapods.

  • @modakkagitplugga
    @modakkagitplugga Год назад +8

    Honestly it's all changed so much since I was a kid, that I'm expecting someone to find evidence that these things were mammals at this point and I'll be inconsolable if that happens

  • @mii2475
    @mii2475 Год назад +4

    If t rex doesn't have lips, then how do they kiss?

    • @austinsy8056
      @austinsy8056 Год назад +1

      Why would they need to kiss? Only humans do that Lol

    • @prywatne4733
      @prywatne4733 5 месяцев назад +1

      ​@@austinsy8056that's discrimination against Tyrannosauri reges.

  • @killarutahraptor4012
    @killarutahraptor4012 Год назад +1

    You should see the Thomas Carr study about Daspleotosaurus to know more from the other side of the debate

  • @Rain_lights
    @Rain_lights Год назад +2

    Dinosaurs, more kissable than expected???

  • @Guyverman01
    @Guyverman01 Год назад +2

    I don't think it will be over until they find a mummified head of a T-rex or similar animal.

  • @varanid9
    @varanid9 Год назад

    Harryhausen made his eponymous Allosaurus with lips in his film, "The Valley of Gwangi". In fact, in once scene, his lip is shown starting to curl up to show the teeth underneath. Maybe Spinosaurus didn't have lips?

  • @danser_theplayer01
    @danser_theplayer01 Год назад +3

    You are all wrong, I propose we put giant bulging red lips on T-rex and other dinos!

    • @BzotsOutOfIllinois3500
      @BzotsOutOfIllinois3500 Год назад

      WE HAVE LIED STOLEN LOOKED PREVERSELY AND USED GODS NAME IN VAIN SO REPENT AND TRUST IN CHRIST FOR HE SAVED U HELL ON THE CROSS.

    • @danser_theplayer01
      @danser_theplayer01 Год назад +1

      @@BzotsOutOfIllinois3500 What kind of *rugs you on?

  • @brawlholic9960
    @brawlholic9960 Год назад

    Sebecidae was a clade of reptiles that survived the K-Pg extinction event. While distantly related to crocodilians, they were ecologically closer to the dinosaurs. Barinasuchus and others from the family were terrestrial predators. So the question is, did they have lips to protect their teeth or not? probably not

  • @Justice17
    @Justice17 Год назад +2

    I can see a trex having lips do this argument never bothered me although I do like the idea of their teeth being shown like in Jurassic park. HOWEVER, I will never buy that trex was feathered unless they reverse engineer one or go back in time to get one to prove it.

  • @GnarStark
    @GnarStark Год назад

    I vaguely remember from a crocodile doc that they can have exposed teeth because they’re mostly aquatic animals. Teeth exposed to the air constantly can degrade them so I’d think dinosaurs would have lips covering them?

  • @zabijavak2329
    @zabijavak2329 Год назад +2

    I think the lips look better anyways. It makes them look more like an actual animal and not a toothy, spiky movie monster.

  • @choptop81
    @choptop81 Год назад +1

    You should make a video on the paleontological slapfight over Dravidosaurus sometime

  • @emk7132
    @emk7132 Год назад +1

    I appreciate your content and also that you seem like a really nice guy

  • @sideways_chip_eater6420
    @sideways_chip_eater6420 Год назад +3

    Okay hear me out
    What if they do have lips but have the ability to lift them up when they're trying to snarl or look intimidating or have facial expressions. (Not like humans or anything but something minimal like wolves snarling and stuff)

    • @Spamkromite
      @Spamkromite Год назад +1

      I once saw a cow snarling at me.

  • @recap62
    @recap62 Год назад +7

    It'll make sense that dinosaurus have lips: bc without lips, it'll dry out and fall off. And the reason animals (most I think) developed lips, bc they keep the teeth moist. And yes crocidilians doesn't have lips but their teeth didn't dry out bc their semi aquatic and most (I think?) Of the time they spend time in water and it'll keep the teeth moisted

    • @christianvaixco196
      @christianvaixco196 Год назад +5

      for me the discussion is not whether or not it had lips ..... because for me theropods had lips, my doubt is the size, whether they were small, medium or large, because dinosaurs with large teeth and the largest tyrannosaurus rex with lips small and medium their giant teeth would be exposed, and obviously with the saliva hydrating the gums with the roots and running down the teeth, and I think the t rex lived in a hot and extremely humid environment, forests with a lot of rain, abundant water, swamps, lakes , rivers, sea.... I could get in and out of the water whenever I wanted, I think that all this would favor having few lips, but even so there is no rule of nature because there are current and extinct animals in different situations, like hippos, practically aquatic and with many lips, and saber-toothed tigers, mammoths, elephants, in extremely dry environments and with most of the teeth exposed, that is... yes, they have lips, but small to medium and with all saliva hydrating the gums and roots and running down the teeth hydrating them, for me all three situations are valid, small, medium or large lips in dinosaurs, there are several examples favoring one or the other , mammoths and elephants with the largest teeth on the planet , with most of it all exposed, but with the lips up there protecting the gums and roots and with salivation, for me the debate is very open, the possibility of the t rex having small and medium lips and because they have giant teeth they would appear as a saber tiger, along with salivation and lots of water in the environment, literally everywhere.
      bro i don't speak english, and i'm using google translator hahahaa.....

    • @austinsy8056
      @austinsy8056 Год назад

      What about land prehistoric crocodiles like kaprosuchus? They had huge jagged teeth and it looks very doubtful they would have lips covering them

    • @recap62
      @recap62 Год назад

      @@austinsy8056 since they hunt in land, they can either drink or eat to keep the teeth moist

    • @HenrythePaleoGuy
      @HenrythePaleoGuy Год назад

      @@austinsy8056 Kaprosuchus is likely not as terrestrial as was thought, so that doesn't necessarily track.

    • @austinsy8056
      @austinsy8056 Год назад

      @@HenrythePaleoGuy makes sense… because it seems likely it would only be semi terrestrial because of it’s teeth

  • @Symbiotian
    @Symbiotian Год назад +1

    truly a Jurassic Park raptor smirking moment

  • @Jsteiner1974
    @Jsteiner1974 Год назад +1

    I always pictured them with lips because I think of them as lizards, and every sharp toothed lizard I can think of does not have exposed teeth. Crocodilians do, but they're not lizards.

  • @RobSojourn
    @RobSojourn Год назад +1

    I am curious, based on these conclusions, if the smilodon (sabre toothed cats) had extra enamel on their potentially exposed big teeth?

    • @RaptorChatter
      @RaptorChatter  Год назад

      Potentially. Of just bigger lips that hung some. Like some of those super slobbery dogs.

    • @speedracer2008
      @speedracer2008 8 месяцев назад

      @@RaptorChatterWhen I draw sabertoothed cats, I give them pouches for their teeth, but still have the tips of the teeth pointing out, so people know it’s a sabertoothed cat.

  • @ArtemisDalmasca
    @ArtemisDalmasca Год назад

    I like the information, especially as someone who kinda tries to keep at least somewhat in the loop concerning things like this.
    I'm seriously waiting for anything solid to be released about Spino's since that seems to flip flop every few months.

  • @Crispy_Bee
    @Crispy_Bee Год назад

    Lips make most sense of just about every type of active land animal. It protects the gums from drying out, the teeth from the elements, helps with camouflage and keeps the food in your mouth while eating and keeps the dust and dirt outside. Even birds like geese keep their teeth mostly 'covered', there are very few birds who have teeth and whose teeth are visible when their mouths are closed - and basically all of those that have "uncovered" teeth have them as part of the beak structure and not "actual" teeth. Even when you take large land reptiles like snakes or lizards like Komodo Dragons - they all have lips.

    • @LuisRivera-jk1vo
      @LuisRivera-jk1vo Год назад

      Teeth rules on Crocodiles in the modern world madafaka

  • @humblemarty
    @humblemarty Год назад +1

    I like either version.

  • @TheAlison1456
    @TheAlison1456 Год назад

    This is the last place I expected to learn about the purpose of lips. You think a dentist or some biology book about the oral cavity would've mentioned it.

  • @TheBlackWarden420
    @TheBlackWarden420 Год назад +4

    If dinosaurs, especially theropods, constantly lose their teeth and regrow them back during their lives, then they definitely don’t have lips because they didn’t mind losing the teeth in the first place.

  • @laurachapple6795
    @laurachapple6795 Год назад +1

    I was 95% sure this was an April fool's video when I saw it come up.

    • @vkobevk
      @vkobevk Год назад +1

      the new is one week old

  • @GregoryShtevensh
    @GregoryShtevensh Год назад

    The issue I have with this, is the crocodile monitor has a concave in its upper jaw rather than a Convex like T-Rex

  • @fourleafclover2377
    @fourleafclover2377 Год назад

    Amazing talk loved this video what is the little tyrannosaur mini skeleton figure on the shelf to the left of the video I’d love one !!! ❤

  • @ßrøadførk
    @ßrøadførk Год назад +2

    What confuses me more is, why's a tREX look like it has skin slapped on its skull, unlike other animals (for example, a bear for instance: bears have small skulls big heads yet trexs are like flesh on its skull. How do we know they looked like that? It just literally the same shape as its skull with no meat on it what so ever unlike animals who look somewhat different compared to there skull structor.)

    • @Spamkromite
      @Spamkromite Год назад

      That's also another reason why they never considered adding ears to dinosaurs (specially ceratopsians, which has an important bone structure around the outer rim of the ear canal that would imply the roots for muscles to support "something" at the end of the auricle). They are not "skin and bones" as we know from animal skulls nowadays.

  • @Shovel________________
    @Shovel________________ Год назад

    i mainly went with the trex with lips argument because first of all, most terrestrial animals do have flesh covering their teeth, so it would be reasonable that a t-rex would have that too. second, our depictions of dinosaurs are very inaccurate, as dinosaurs would have much more extra meat on those bones. we show dinosaurs with little more than enough room to fit some skin over organs and muscle. real life animals are always at least a little larger than their bones show, so the same rule would likely apply to dinosaurs as well.

  • @thomasmonroe7947
    @thomasmonroe7947 Год назад

    When a monitor, snake, toothed lizard or even large amphibian open their mouth(s), teeth are visible. So, there are channels/sockets/pockets that do allow for encased teeth to remain moistened as the animal is not actively engaged in predatory or antagonistic behaviors.
    I would imagine this to be pretty much the same for the non-avian dinosaurs, as well.
    It makes these animals no less impressive.
    Just more sensical as biological entities.
    I think, though, that this conversation won’t run out of gas for some time.

  • @Birthday_Shark
    @Birthday_Shark Год назад

    I need that Diliphosaurus art you have in your office. It looks amazing.

    • @RaptorChatter
      @RaptorChatter  Год назад +1

      It's an official print of the concept art for Jurassic Park from Stan Winston's studio! There's still some out there for sale I think

    • @Birthday_Shark
      @Birthday_Shark Год назад

      @@RaptorChatter Thank you, sir!

  • @starrywizdom
    @starrywizdom 7 месяцев назад

    Thank you for talking about the abusive advisor issue. It's about time there was more transparency about the abuses of power that are unfortunately ingrained in many of our systems, including academia. But it's not fair to blame co-author(s) on a paper for abuses by one of the authors -- you put out papers with whomever else is doing the work, & abandoning a multi-year project in this publish-or-perish setting would likely mean losing your career...

  • @BL-yj2wp
    @BL-yj2wp Год назад

    It absolutely makes sense for dinosaurs to have had lips, but what wasn't mentined is the difference in life expectancy for crocodiles vs. therapod dinosaurs. An animal that lives 30 years will necessarily experience less tooth wear vs. if the same animal lived 60 years.

    • @Dr.IanPlect
      @Dr.IanPlect Год назад

      "An animal that lives half as long will necessarily experience less tooth wear."
      - a flawed assertion

  • @abdulazizrex
    @abdulazizrex Год назад +1

    Why isn’t anyone bringing up how crocs and theropods regularly replaced their teeth?

    • @domesticus2958
      @domesticus2958 Год назад

      Apparently theropods didn't replace their teeth nearly as quickly or as often as crocodilians do, or sharks for that matter. This lines up with the new research indicating that theropod teeth were less worn and less enamel-covered than croc teeth; they probably had lips

  • @brawlholic9960
    @brawlholic9960 Год назад

    The closest relatives of dinosaurs are birds and crocodiles which are all grouped together in the order archosaurs. Birds are of course the closest relatives because they are theropod dinosaurs themselves. Neither birds nor crocodiles have lips, and the only living group of reptiles to have lips is the archosaur's sister group, the lepidosaurs (which includes lizards and snakes). Mammals doesn't count ofcourse because of their distant relation to reptiles in general and due to the fact that they posses muscular lips(the muscles also provide support to their facial skin) which even lepidosaurs do not have either. It would seem that lips are the most logical thing for an animal to have but that's not the case. If we take into account the morphology of the mouth and the structure, lips are not a necessary ''apparatus''. Also, the areas on the maxilla and dentary bone that appear to supply blood to lips could also provide blood supply to nourish large facial scales as well. Also the mandibular teeth (the lower jaw) are protected inside the mouth, a feature *unique* to theropod dinosaurs. And because the lower jaw fits inside the upper jaw, you can see how far down to the lower jaw the upper teeth reach. Not the best space for a lower lip to develop and provide cover to the upper teeth especially without the present of facial muscles to support the lower lip. As for the teeth in the upper jaw, firstly we see animals today with exposed teeth (like musk deer or water deer that have exposed fangs outside the mouth all the time) and secondly unlike mammals reptiles in general shed their teeth constantly in their lives. So, again, no need for an upper lip to cover and protect them. Large facial scales could also provide some good cover as well and be better suited for intraspecific competition. I don't believe that the lack of lips in crocodiles evolved due to their water lifestyle. If that were the case cetaceans like dolphins would do the same, but most dolphins have lips. So, It could actually be an ancestral archosaurian trait. If the ancestral trait of archosaurs is indeed lipplessness/the absence of lips, then it could be passed on to their descendants the dinosaurs.
    Many believe also that Trex had such salivary glands that were able to produce just enough moisture within their jaws to keep the teeth from falling over the threshold(see komodo dragons), or at least maintain them enough until eventually shed them.
    Maybe the climate played part in this. Climate was more humid back then, but could environmental humidity be so effective to protect dinosaur teeth? I don't know.
    Along with many unknowns there is the unknown of tongue which could also play vital role in the dinosaur oral physiology.

  • @jimparsons6803
    @jimparsons6803 Год назад +2

    I knew of this back and forth from before, but I didn't know about the evidence. My thanks for giving such a clear set of evidence.

  • @kuitaranheatmorus9932
    @kuitaranheatmorus9932 Год назад

    Am glad this debate exist though cause it just teaches us alot about dinosaur which is a good thing, but I sure do like to think most dinosaurs had lips like these.
    Also I wish y'all are having a great day

  • @StoffelDilligas
    @StoffelDilligas Год назад

    I'm sure that I watched a video saying crocodiles have multiple replacement teeth during their lifetime. So being exposed to excess wear, is not so much of an issue?
    Would T-Rex have multiple replacement teeth during its lifetime?
    T-Rex looks more menacing without lips.

    • @34r343
      @34r343 4 месяца назад

      No it looks goofy with out lips

  • @Srt3D01-db-01
    @Srt3D01-db-01 Год назад +1

    5:32 thats a pretty chunky meal for a single swallow 😅

  • @turbonerd3075
    @turbonerd3075 Год назад

    Oh finally! I can sleep now, this debate has been bugging me for years.

  • @chivasgio3259
    @chivasgio3259 9 месяцев назад

    since dinosaurs were the father of birds and lizards, trex must've been with a kiwi or cassowary type of feather... but with a lizard lips...

  • @8023120SL
    @8023120SL Год назад +1

    Well if they didnt have lips then where did the the lady t rexs wear their lipstick?

  • @swedneck
    @swedneck Год назад

    Fwiw i find that theropods with lips just look more sensible than without

  • @TheDeepDiveLLC
    @TheDeepDiveLLC Год назад

    Please consider that the height of the dinosaur would have been tall enough to been out of the way of the usual dust wind gusts, additionally the overbite has always been large enough to become a unique topic. There's no reason for therapods to have or not have lips and should still be taken with great speculation for each and every dinosaur. Just like there's no reason for feathers to be on all dinosaurs, and that there's a great diversity of types of feathers from those of an eagle, too some like the peacock. To the fuzz like on ostriches, to the hydrodynamic penguin. Do not assume we are right, because we have for a very long time in history, always been wrong.

    • @bryceburns7425
      @bryceburns7425 Год назад +1

      How does being tall keep you out of the wind? That’s like the opposite of how wind works.

  • @jeffreygao3956
    @jeffreygao3956 Год назад +2

    1:20 So, by that logic how come sharks, whales, and pinnipeds still have lips?

    • @Spamkromite
      @Spamkromite Год назад +2

      1. The "lips" are just a muscle to help elasmobranchii to project their jaws forwards to catch prey and force a vacuum. That's why many fishes evolved lips for the vacuum factor while catching prey, but some others don't, like the Hydrocynus goliath (that snaps on prey until they bleed to dead, just like many abyssal fish that are literal traps of teeth), or the piranha. The piranha has them like that because they don't rely on "gripping" the fish but to gash it with quick mouth movements until the prey weakens. Also they are more scavengers than hunters anyway and need to shred big preys before consuming them. All is on the purpose of the teeth, and the more stress on the teeth, the less lips in the way. It's not a matter of keeping them "moist" underwater.
      1.2 Many sharks don't have lips like the carcharias taurus for example.
      2. Whales needs lips to trap the water in while filtering and shifting through the baleens with their tongues.
      3. They evolved from land mammals that had lips by default. Many of them still uses them to fill their mouths (vacuum effect) with water and spray a jet with them while shifting through the reefs and the seafloor looking for food. That's true for the otters that use water jets to comb the seafloor to expose clams. The leopard seal gets an extra grip on its prey with the help of the lips. Also remember that pinnipeds and lutrinae also spend most of the time outside the water. They also still need their lips to keep their whiskers and all the hardwired sensorial evolution poured on their muzzles alone.
      There's also no practical need in losing lips for odontoceti because of the extra sensorial organs along their lip line, and the extra grip that gives while catching slippery prey underwater, but beaked whales started to develop tusks outside their mouths and these has the same properties as the tusks of a land animal like the boars. Just search for the strap-toothed whale to see an example. They are worn because they use them constantly in their inter-socialization pods and in some cases, to ram and cause a world of hurt against predators like sharks and even orcas. Think also of the narwhal, that uses the tooth mostly for courtship, or the tusks of the walrus, smaller in the females but they all use them to carve in the ice and poke pain on the others to fight for ice-platforms to rest. Lips don't really "fall off" in evolution unless it's blocking the animal from being efficient at getting food (like causing pain while eating) or mates (bitting the lips of your rivals is painful because of the many nerves that are in there). They just don't come off that easily. They are a pretty powerful evolved organ on mammals and it has too many perks for survival to lose them like that 😅

  • @dylansearcy3966
    @dylansearcy3966 Год назад

    The early reconstruction of the t.Rex was depicted with lips

  • @informer3evans797
    @informer3evans797 Год назад

    If crocodiles regrow their teeth on average over 2 times per year what does protecting the teeth have to do with it? Do we know if T Rex regrew teeth and if so how often? It doesn't seem like lips would matter if you're re-growing teeth that you lose.

    • @kaizusmyguyzus6469
      @kaizusmyguyzus6469 Год назад

      Regrowing teeth still takes valuable energy and nutrients, so protecting teeth is still important.

  • @Lowlandlord
    @Lowlandlord Год назад +2

    So, did terrestrial crocodilians have lips to protect the teethes?

    • @RaptorChatter
      @RaptorChatter  Год назад +5

      Maybe! They still need to be studied more closely, but this paper at least does a lot of the groundwork to establish how likely they were to have lips.

    • @tjarkschweizer
      @tjarkschweizer Год назад

      Most likely

    • @domesticus2958
      @domesticus2958 Год назад

      It's really not a matter of whether they could protect their teeth or not. We know that crocodiles can protect their teeth with extra coats of enamel and by replacing them often. Crocodylomorphs that existed before true crocodilians, like rauisuchians, probably had lips because that was the ancestral conditions. Any terrestrial crocodilians that evolved directly from lipless aquatic crocodilians, like Quinkana, probably also adopted the lipless condition.

  • @BLKBRDSR71
    @BLKBRDSR71 Год назад

    Great, now I can't un-see a T-Rex using it's lips to smile at it's victim. 👄

  • @zuttoaragi8349
    @zuttoaragi8349 Год назад +1

    Am I the only one who's always thought they look cooler with lips?

    • @austinsy8056
      @austinsy8056 Год назад

      I thought they looked cooler without them

  • @shrimpmaster7988
    @shrimpmaster7988 Год назад +1

    I read that as “the T-Rex lib debate is over” implying this had to do with something liberals were saying something about dinosaurs.

  • @The_SOB_II
    @The_SOB_II Год назад

    Happy April Onest

  • @doriansanchez1961
    @doriansanchez1961 Год назад +1

    so it boils down to one dino had lips so all dinos have lips? T-Rex skull has foramina on the bottom jaw but not the top and their top teeth get darker as you go down showing that they where exposed. but what ever make you happy because until we see a live one no one will know. At one point they claimed it had feathers so who know.

  • @batguy39
    @batguy39 Год назад +1

    Accuracy vs Badass

  • @gedeonnunes5626
    @gedeonnunes5626 Год назад +1

    Of course they had lips! Otherwise, how world they give eachother smoochies?

  • @LowRankingSparrow6145
    @LowRankingSparrow6145 Год назад

    They should have taken the intersection of more animals’ teeth. Spinosaurus teeth are common I hear, couldn’t they spare one of them to find out about it too?

    • @juanyusee8197
      @juanyusee8197 Год назад

      The Daspletosaurus tooth used for this paper was specifically inside a maxilla where it remained in the animal's mouth until it died (thus cutting it open would actually reveal the tooth's condition when the animal was alive), not an isolated and shed tooth that would have been exposed to the elements.

    • @LowRankingSparrow6145
      @LowRankingSparrow6145 Год назад

      @@juanyusee8197 ah, that makes sense.

  • @PeopleAreFish
    @PeopleAreFish 6 месяцев назад +1

    It's wonderful that even just a year after this video came out the discourse has died down and it feels like, yes everyones accepted, trex had lips, wild to think we used to doubt that
    Thank you for explaining this so well

  • @wormwoodcocktail
    @wormwoodcocktail Год назад

    4:38 What about Spinosaurus and non-dinosaurs like marine reptiles from the time? Would they have a more croc-like face?

  • @Enoshk
    @Enoshk Год назад +1

    Lips or no there's no way for me to know for sure I've never seen a trex in person so all i can do is guess. Looks cooler to me with it's teeth showing though

    • @BzotsOutOfIllinois3500
      @BzotsOutOfIllinois3500 Год назад +1

      WE HAVE LIED STOLEN LOOKED PREVERSELY AND USED GODS NAME IN VAIN SO REPENT AND TRUST IN CHRIST FOR HE SAVED U HELL ON THE CROSS.

    • @Enoshk
      @Enoshk Год назад

      @@BzotsOutOfIllinois3500
      I think you might be a bot. Odd comment for this vid no?... But just in case your similar to me I'll give you respect and acknowledge your comment brother/sister.
      I have free will and I'll do what I want because I want to. I'll be ignorant, I'll make many mistakes, I'll do evil as well as good. I'll learn and grow becoming better and better overtime. I'll walk my path. Not yours. Not anyone else's. Mine and mine alone.
      That being said thank you for the heads up I really do appreciate the kind thought that went into your comment
      (if you do be real person)
      After all you'd have to care about my safety if you'd go through the trouble of telln me this. So just be at ease knowing I chose this, whatever happens it's not your fault friend, it's mine. Much love to you and yours good luck on your path😁

    • @BzotsOutOfIllinois3500
      @BzotsOutOfIllinois3500 Год назад

      @@Enoshk I'm very much real and yes I did care to go out of my way for you to see this. ur welcome btw