The World's Biggest Predator Wasn't Fully Grown

Ойын-сауық

Imagine a macropredator the size of a blue whale. The biggest predator was likely a macropredatory icthyosaur! Ichthyotitan severnensis and the Aust Colossus were candidates for predators bigger than a blue whale or close to it. Prehistoric ocean predators existed on a different scale than modern oceans. Ichthyotitan is known from the Lilstock Monster and Blue Anchor specimens, and were likely bigger than most Otodus megalodon. The world's biggest predators weren't fully grown, either! The Aust Colossus very likely would have been bigger than a blue whale when at adult size, and based on morphological comparisons with other relatives could have been the biggest predator ever. In 2018, a team of scientists published an analysis of enormous jaw bones from the Late Triassic of the United Kingdom. These jaw bones were discovered across the UK: the Lilstock Monster specimen was found by Paul de la Salle and is now one of the specimens assigned to the new genus Ichthyotitan severnensis. The Ichthyotitan holotype is another more complete surangular that gives us more clues about the enormous animal’s life and body size. The Aust Cliff material, found decades earlier, had been mistaken for dinosaur limb bones due to its enormous size. The 2018 paper argued that these huge fragments both belonged to shastasaurid ichthyosaurs, which were the largest marine reptiles known. Two new studies expand our knowledge of these animals, confirming the ichthyosaur diagnosis and discovering that none of these whale-sized creatures were fully grown.
Ichthyotitan Description: 00:00
The Specimens: 00:51
Ichthyotitan Size: 02:18
Aust Colossus Size: 04:33
Histology Analysis: 05:05
Ecology Analysis: 06:48
The Hypothetical Maxima: 07:30
Thumbnail art by Rudolf Hima
Join the Discord server: / discord
Join this channel to get access to perks:
/ @thevividen

Пікірлер: 530

  • @TheVividen
    @TheVividen2 ай бұрын

    REFERENCES AND DISCLAIMER Remember, these giant specimens are fragmentary! That's why I provided size ranges based on scaling from multiple species, instead of pretending like there's a hard and fast estimate. That being said, math (usually) doesn't lie, and based on proportions of other giant ichthyosaurs, Ichthyotitan and the Aust Colossus very likely were titanic. Please read through the sources below and form your own opinion, and thank you for watching! Macropredation and endothermy www.ncbi.nlm.nih.gov/pmc/articles/PMC5609766/ University of Bonn article www.uni-bonn.de/en/news/072-2024 Lilstock and Aust histology peerj.com/articles/17060/ The original Lilstock and Aust study journals.plos.org/plosone/article?id=10.1371/journal.pone.0194742 Hydrodynamic adaptations in ichthyosaurs (3D model source) royalsocietypublishing.org/doi/10.1098/rspb.2018.2786 Body mass evolution in ichthyosaurs www.science.org/doi/10.1126/science.abf5787 Besanosaurus scaling (outdated) twitter.com/darius_nau/status/1654939376751636480/photo/1 Megatron’s instagram (awesome paleoart) instagram.com/brockpost8/ Shonisaurus macropredation hakaimagazine.com/news/shonisaurus-gets-a-makeover/ Ichthyosaur specific gravity pup-assets.s3.amazonaws.com/public/resources/9780691193809/Paul-The-Princeton-Field-Guide-to-Mesozoic-Sea-Reptiles-Size-Table.pdf Lomax et al 2024 journals.plos.org/plosone/article?id=10.1371/journal.pone.0300289

  • @francissemyon7971

    @francissemyon7971

    2 ай бұрын

    But are we looking to an orca-like, apex predator ecology ?

  • @TheVividen

    @TheVividen

    2 ай бұрын

    @@francissemyon7971 I wouldn't say that we have enough information to say honestly. The muscle attachments of Ichthyotitan's jaw are stated to be most similar to Shonisaurus, which may indicate a similar jaw structure, but that isn't definitive. It's extraordinarily unlikely that the British Giants were filter feeders or suction feeders, however, given the complete lack of adaptations for either feeding method in true ichthyosaurs (and the fact that most giant shastasaurids were clearly adapted for predation of large-bodied prey).

  • @francissemyon7971

    @francissemyon7971

    2 ай бұрын

    @@TheVividen Riley Black implies an orca-like lifestyle in the Nat Geo article about Ichthyotitan.

  • @TheVividen

    @TheVividen

    2 ай бұрын

    ​@@francissemyon7971Oh really? I haven't read that article, but it sounds interesting. Do you have the link?

  • @NobleKorhedron

    @NobleKorhedron

    2 ай бұрын

    ​@@TheVividen Are they from the same stages; or quite far apart temporally?

  • @robwalsh9843
    @robwalsh98432 ай бұрын

    Giant ichthyosaurs turning out to be killer sea dragons instead of peaceful reptilian beaked whales is like the plot twist in a thriller movie when the charming person turns out to be a serial killer.

  • @markcobuzzi826

    @markcobuzzi826

    2 ай бұрын

    With stories like this coming out, I have wondered if these titanic ichthyosaurs would arguably be nature’s closest stand-in for the Biblical Leviathan (even more so than the whale actually named after it), similarly to how some Young Earth Creationists and pop-culture media like to characterize sauropods as nature’s closest stand-in for the Biblical Behemoth.

  • @quakethedoombringer

    @quakethedoombringer

    2 ай бұрын

    ⁠​⁠​⁠@@markcobuzzi826i am fairly sure Leviathan are supposedly based on the existent sperm whales, which are confirmed to be ginormous and relatively aggressive (literally kills giant squid)

  • @edgargaebolg9307

    @edgargaebolg9307

    2 ай бұрын

    ​@@quakethedoombringer The Hebrew word for whale is 'livyatan' so yeah, the Leviathan is based on them

  • @markcobuzzi826

    @markcobuzzi826

    2 ай бұрын

    @@quakethedoombringer I was going more by certain versions of the folklore, where Leviathan was specifically portrayed as a more reptilian sea monster. In this case, giant ichthyosaurs happen to be both reptiles and at least superficially cetacean-like creatures. So that might arguably make them a unique blending of both worlds.

  • @Wunderkind04

    @Wunderkind04

    Ай бұрын

    No. I will always believe they were just big chunky happy dolphins. >:(

  • @dier7144
    @dier71442 ай бұрын

    Absolutely insane that this absolutely GARGANTUAN monster of an icthyosaur wasn’t even an adult yet, this might just be the most dangerous creature…ever

  • @TheVividen

    @TheVividen

    2 ай бұрын

    Honestly might be! Even if it were a relatively "gentle giant" like a toothless shastasaurid, it would not be something to mess with.

  • @dier7144

    @dier7144

    2 ай бұрын

    Even if it gets downsized to OBLIVION like… 500% or something it’s still a massive icthyosaur which could destroy most of the species in their ecosystem, crazy!

  • @DreadEnder

    @DreadEnder

    2 ай бұрын

    It’s incredible the jaw fragment is bigger that the entire skull of the new kimmeridge pliosaur (1.8m)

  • @laseriedeladilophosaure9246

    @laseriedeladilophosaure9246

    2 ай бұрын

    A parament il aurait existe une espèce de ichyosaurus qui aurait pu attendre jusqu'à ~ 36 m de longueur donc 25 m n’est pas très étonnant pour moi maintenant je suis aussi heureux que la plus part des reptiles prehistoric s’avèré être plus grand qu’ont ne le pense. A force je pense que les plus grands ichyosaurus mesurait jusqu'à 40 m voir plus pour des masse supérieure à 360 tonnes !!! Ses créature ont des taille de plus en plus proches de la hauteur de godzilla 1954 (C’est une dinguerie )

  • @spider_punk156

    @spider_punk156

    2 ай бұрын

    Why hello dier

  • @raulvidal2343
    @raulvidal23432 ай бұрын

    Paleontology: There weren't blue whale-sized pliosaurs or mosasaurs. Me: ☹️☹️ Paleontology: But there were blue whale-sized macropredatory ichthyosaurs. Me: 😄😄😄

  • @user-it5ig5nn8k

    @user-it5ig5nn8k

    2 ай бұрын

    But may be can existed blue whale sized mosasaurs and other mesozoic sea reptiles or even bigger

  • @markcobuzzi826

    @markcobuzzi826

    2 ай бұрын

    That moment when you realize that Jules Verne’s depiction of a ferocious supersized Ichthyosaurus in “Journey to the Center of the Earth” seems to have aged surprisingly well.

  • @MythicHuskii

    @MythicHuskii

    Ай бұрын

    Actual Paleontology: There aren’t any blue whale sized pliosaurs or mosasaurs… YET.

  • @user-rw4yi2xw5i

    @user-rw4yi2xw5i

    18 күн бұрын

    ​@MythicHuskii but may be exist blue whale sized mosasaurs and other prehistoric marine reptiles despite that ichthyosaurs,mosasaurs,metryorhinchids and plesiosaurs are warm blooded animals,because size sample of biggest and not only biggest and other extinct vertebrates and other living organisms is too tiny unlike very large size sample of extant living organisms includes blue whale

  • @avecersis
    @avecersis2 ай бұрын

    Ichthyotitan really be pulling "this isn't even my final form" on the paleontology community

  • @TheVividen

    @TheVividen

    2 ай бұрын

    Behold...GOLDEN ICHTHYOTITAN

  • @YharonFanshit

    @YharonFanshit

    2 ай бұрын

    Thats what i was thinking lol

  • @billyherrington5112

    @billyherrington5112

    2 ай бұрын

    Sad spinosaurus noise

  • @magosryzak7477

    @magosryzak7477

    2 ай бұрын

    ​@@TheVividen.... you have given Ichthyotitan a Frieza voice and I cannot unheard it now.

  • @crustypineapple9549

    @crustypineapple9549

    2 ай бұрын

    Man's pulling a spinosaurus

  • @SlothOfTheSea
    @SlothOfTheSea2 ай бұрын

    If nature were attempting to create a truly undefeatable beast of an animal, giant Ichthyosaurs were the result.

  • @marcelloperillo4575

    @marcelloperillo4575

    2 ай бұрын

    not really coz they went extinct :(

  • @MacieNicholson-kv8mx

    @MacieNicholson-kv8mx

    2 ай бұрын

    Nature made Orcas. WAY scarier

  • @toiletsponge

    @toiletsponge

    2 ай бұрын

    ​@@MacieNicholson-kv8mxOrcas aren't even half the size of this thing

  • @jamesaron1967

    @jamesaron1967

    2 ай бұрын

    @@toiletsponge True, however, their intelligence is off the scale, and group hunting strategies more than compensate for the relatively small Orca size. Way more.

  • @dreadblock7592

    @dreadblock7592

    2 ай бұрын

    i feel like you just jinxed it.

  • @gladiolus5377
    @gladiolus53772 ай бұрын

    "We're gonna need the biggest boat"

  • @YharonFanshit

    @YharonFanshit

    2 ай бұрын

    We need bigger than the biggest!

  • @paolopasaol9700

    @paolopasaol9700

    2 ай бұрын

    We're gonna need an even bigger biggest boat

  • @TimZi-wh2ty

    @TimZi-wh2ty

    Ай бұрын

    A modern day frigate will do let alone a destroyer And cruiser or carriers will be too op

  • @The_Story_Of_Us
    @The_Story_Of_Us2 ай бұрын

    Ichthyotitan to me is made even more interesting because it was dated back to about 202 million year ago. That’s the tail end of the Triassic, right as the Triassic-Jurassic extinction was going to hit the world, wiping out a third of all ocean biodiversity and also marking the end of the Shastasaurid reign. So they were growing their absolute biggest right at the end of their time and considering the fact that these individuals were not fully grown, who knows how much bigger they could have gotten were it not for the mass environmental shift at the end of the geological era they dominated without so much as a shred of competition. And so the Ichthyosaurs become an unbelievably dramatic example of the fact that no matter how big and bad you get (in fact ESPECIALLY if you’re big and bad), you are made and unmade by your environment, completely at the mercy of nature and that will never ever change…

  • @elmohead

    @elmohead

    2 ай бұрын

    Big fish die first whenever the water changes.

  • @The_Story_Of_Us

    @The_Story_Of_Us

    2 ай бұрын

    @@elmohead eh, technically not, they usually die because their food sources disappear first. So really it's the low trophic levels that get hit hard first and that dominoes all the way up to the top of the food chain. So the small fish do die first and the big fish follow.

  • @spidext

    @spidext

    Ай бұрын

    dude imagine if because of these guys, other fish had to evolve to grow big and slowly we would have actual godzillas in the ocean

  • @The_Story_Of_Us

    @The_Story_Of_Us

    Ай бұрын

    @@spidext That’s not really how it works and the fossil record shows that to be the case. No triassic fish ever got bigger than about 2-3 meters long. If there are colossal super predators around, evolutionary pressure does not cause you to grow bigger, it causes you to grow smaller, because a smaller fish can more easily evade and hide from such animals. This only really works in the opposite direction. When prey items become bigger, predators also grow bigger to fill the niche of hunting them, if predators are already massive, prey don’t have the selective pressure to grow bigger because of that. We can see that fish only started making it big again (for example Leedsichthys, the largest bony fish of all time) AFTER the Shastasaurids went extinct. The closest we’ve gotten to an arm’s race like that is for one the arms race between Ichthyosaurs and other Ichthyosaurs and in the Cenozoic between whales and otodontid sharks. The former time produced Ichthyotitan, the latter produced Otodus Megalodon.

  • @spidext

    @spidext

    Ай бұрын

    @@The_Story_Of_Us jesus christ dude

  • @DreadEnder
    @DreadEnder2 ай бұрын

    4:36 wow the size ranges!!! The larger aust specimen has a lower bound of 34.8 metres and 169 tonnes??? This thing was even more insane than I realised!

  • @TheVividen

    @TheVividen

    2 ай бұрын

    Yep!

  • @t-r-e-x452
    @t-r-e-x4522 ай бұрын

    We finally have our WWD's Liopleurodon. Albeit an Icthyosaur.

  • @christianhernandez3044

    @christianhernandez3044

    2 ай бұрын

    Even bigger 😂

  • @jackstraw4222

    @jackstraw4222

    Ай бұрын

    pliosaur skull in oxford is over 9ft long so im sure there are more and possibly even larger specimens just waiting to be found...

  • @VaguelySynthetic
    @VaguelySynthetic2 ай бұрын

    "Multiple Leviathan class lifeforms detected in this area. Are you sure what you are doing is worth it?"

  • @AgroAcro

    @AgroAcro

    2 ай бұрын

    The crazy thing is, even these things are nowhere near the size as some Subnautica Leviathans.

  • @Blebis

    @Blebis

    Ай бұрын

    @@AgroAcroFr the reaper leviathan is twice the size of a regular blue whale

  • @AgroAcro

    @AgroAcro

    Ай бұрын

    @@Blebis Yeah, and as far as Leviathans go that isn't even particularly large

  • @GTSE2005
    @GTSE20052 ай бұрын

    At this rate I think it's possible that the title of "longest animal to ever live" would belong to a Triassic ichthyosaur

  • @DreadEnder

    @DreadEnder

    2 ай бұрын

    Actually yes, it beats out the silk worm.

  • @xanshen9011

    @xanshen9011

    2 ай бұрын

    Triassic kraken 😈

  • @The_Story_Of_Us

    @The_Story_Of_Us

    2 ай бұрын

    If the estimate is true, the bootlace worm has any other organism beat. But frankly, I find it very unlikely that any animal but a Sauropod would hold the title of longest animal ever. We already know of 35 meter Sauropods and it’s more likely they got even longer than that and outpaced Ichthyosaurs, since a Sauropod growing from 35 meters to 45 entails far less mass being added than an ichthyosaur growing the same amount and thus far less food needed to sustain it.

  • @DreadEnder

    @DreadEnder

    2 ай бұрын

    @@The_Story_Of_Us ichthyosaurs have the advantage of being aquatic so don’t need to support their own mass, but titanosaurs have an intricate network of air sacs which is why sauropods can be longer than a blue whale but only have half or even a quarter of the mass

  • @TheWigglergler

    @TheWigglergler

    2 ай бұрын

    @@The_Story_Of_Us Indeed, and some fragmentary sauropods may have already come close to 45m, such as Bruhathkayosaurus. An ichthyosaur of that length would be rather unrealistic.

  • @cetologyh3906
    @cetologyh39062 ай бұрын

    Something I would like to add about the about the speculated life stage on Ichthyotitan. It should be noted that physical immaturity doesn't necessarily mean-not adult, as I've seen some describe in the comments. In large animals, including creatures like whales, physical maturity occurs very late after being reproductively mature. A lot of the largest whales ever examined by scientists were physically immature specimens. Sperm whales as large as 18.6 m and blue whales as large as 29.2 m have been found to be physically immature, even though both sets of individuals were exceptionally large. So it should also be considered that a physically immaturity may not necessarily indicate that an individual is below the average full-grown size either. Nonetheless, I do not doubt that that Ichthyotitan does appear to overlap with the blue whale in size.

  • @KawaiiEvoMii

    @KawaiiEvoMii

    Ай бұрын

    Just like animals in captivity tend to live much longer than their wild counterparts, it wouldn't surprise me to discover that most blue whales die at what would be an 'early-to-mid' adult age. Just like how humans died at earlier ages in more primitive times. Lack of age doesn't necessarily equate to a creature being unable to live that long if given ample resources, zero competition, and a healthy environment; something nature rarely, if ever, provides.

  • @Damasen13
    @Damasen132 ай бұрын

    We're gonna need the most advanced submarine for this thing! In seriousness, all this is still mind boggling to me that something like this made Mosasaurus hoffmanni look tiny, with the attitude to match. Gonna need a Prehistoric Planet esque documentary about these cyclopean ichthyosaurs. Am real excited for the time travel shenanigans that Icthyotitan would undergo.

  • @TheVividen

    @TheVividen

    2 ай бұрын

    Part of me wants to do a Megalodon in the Triassic video to see if it could handle these behemoths

  • @DreadEnder

    @DreadEnder

    2 ай бұрын

    Haha that’s funny to me because my favourite game franchise is Ark and in their next DLC they’re adding the shastasaurus with a submarine saddle

  • @DreadEnder

    @DreadEnder

    2 ай бұрын

    @@TheVividenwell that’s just not fair, megalodon evolved to hunt similar size animals and it would live the warmer oceans

  • @Damasen13

    @Damasen13

    2 ай бұрын

    With my limited and amateur knowledge of ecology, I predict the Megs would be in a similar situation as the Mioecene, only that the Livyatan now have a side-to-side tail instead of a flute and looks strange to the Meg. If Aust Colossus is a totally different species, thats two types of Livyatan (Livyatan Maximus in this case lol) our Megs have to deal with it.

  • @DreadEnder

    @DreadEnder

    2 ай бұрын

    @@Damasen13 well it’s larger than leviatan even with the smaller estimates but likely ate prey much smaller so probably about the same.

  • @marcoantoniodossantos603
    @marcoantoniodossantos6032 ай бұрын

    Walking with Dinosaurs warned us about this 25 years ago, we just didn't understand it then. Finally, we a 25 meters long macropredatory marine reptile. Stay proud, Walking with Dinosaurs.

  • @Strider_Mane
    @Strider_Mane2 ай бұрын

    0:32 THERE IS HE IS GARY THERE HE IS! Good to see my pal Megatron’s art on here.

  • @megatron6616

    @megatron6616

    2 ай бұрын

    STRIDER MAH BOY

  • @DreadEnder
    @DreadEnder2 ай бұрын

    If I was the old dinosaur enthusiast me all I’d hear would be 37.5 metres, 331 tonnes, young individual, carbon fibre skull. Ignorance is bliss.

  • @TheVividen

    @TheVividen

    2 ай бұрын

    KAIJU REAL But seriously even the lower estimates are monstrous

  • @user-ub5wf3tj1y

    @user-ub5wf3tj1y

    2 ай бұрын

    Imagine we find a 600 tonne animal.

  • @mylessmith9758

    @mylessmith9758

    2 ай бұрын

    Never thought the size of the WWD Lioplauradon would be anywhere near matched.

  • @user-73a

    @user-73a

    Ай бұрын

    what is 37.7 meters in normal terms?

  • @DreadEnder

    @DreadEnder

    Ай бұрын

    @@user-73a that’s 3,455 Big Macs my American friend.

  • @mr.jglokta191
    @mr.jglokta1912 ай бұрын

    Not naming it Jormungandr is a missed opportunity 😆

  • @mylessmith9758

    @mylessmith9758

    2 ай бұрын

    Already taken.

  • @lassenker07

    @lassenker07

    2 ай бұрын

    A mosasaur was named that last year

  • @mr.jglokta191

    @mr.jglokta191

    2 ай бұрын

    @@lassenker07 It's clearly a pretender to the throne 😆

  • @TheHauntedDiariesUrbex

    @TheHauntedDiariesUrbex

    2 ай бұрын

    Two different animals can't have the same Genus name. Unless it's spelled differently. But there are actually 2 animals with that Genus name, one is a Mosasaur, the other is a Recumbirostran tetrapod.

  • @GalvyTheTom

    @GalvyTheTom

    2 ай бұрын

    @@mr.jglokta191I mean, mosasaurs and snakes are related. Makes more sense for a mosasaur to have that name than an ichthyosaur

  • @YharonFanshit
    @YharonFanshit2 ай бұрын

    This is such a "this isnt even my final form" moment

  • @thisisachannel4575
    @thisisachannel45752 ай бұрын

    Wouldn't it have been awesome if THIS was the animal popping out the Lagoon in Jurassic World

  • @Edelweiss1102
    @Edelweiss11022 ай бұрын

    I love the idea that the legendary sea beast which might surpass the Blue Whale is an Ichthyosaur, a group of animals which is often overlooked and laughed at as boring reptilian dolphins. And an animal out of the Triassic, a historical time period which is often overshadowed as well. Move aside Mosasaur, Lyviatan and Megalodon, your daddy has come home. There are always bigger "fish" lmao.

  • @DreadEnder
    @DreadEnder2 ай бұрын

    Amazing video! Definitely worth the hype over the past week or so.

  • @abdulazizrex
    @abdulazizrex2 ай бұрын

    What were these even eating to get so big?!

  • @TheVividen

    @TheVividen

    2 ай бұрын

    Great question! Probably whatever they wanted

  • @lolidemon3163

    @lolidemon3163

    2 ай бұрын

    If i had to guess. They were eating food :p

  • @DreadEnder

    @DreadEnder

    2 ай бұрын

    @@lolidemon3163 good hypothesis

  • @DreadEnder

    @DreadEnder

    2 ай бұрын

    Judging from other large ichthyosaurs and other animals in their environment probably smelled icthyosaurs, large fish, turtles, plesiosaurs maybe even small pliosaurs or mosasaurs (that would be a funny turn of events!)

  • @francissemyon7971

    @francissemyon7971

    2 ай бұрын

    ​@@DreadEnderNo plesiosaurs 202 MYA...

  • @MrEctotherm
    @MrEctotherm2 ай бұрын

    Hey Dude, love the videos, they've been both fun and educational. I have an idea for a video that might be cool: What if Giganotosaurus and Tyrannosaurus swapped places? You could talk about how they would adapt to their new opponents and food sources, and also how well they would do in their new environments. just a thought :)

  • @DreadEnder
    @DreadEnder2 ай бұрын

    7:30 unfortunately the band of fossil bearing rock is only around 2m and while at least 2 large cliff falls (over 1 tonne) have occurred since I last visited (either 1-2 months or 4-5 months ago depending on my memory) they aren’t common and before then there was a good few years with no major falls. Despite the high tidal range the cliff is mostly unaffected.

  • @TheVividen

    @TheVividen

    2 ай бұрын

    I'm excited to include the clips in the longer video coming soon!

  • @DreadEnder

    @DreadEnder

    2 ай бұрын

    @@TheVividen really!!! Awesome! I’d love it whether you used them or not!

  • @ultraextraorca7644
    @ultraextraorca76442 ай бұрын

    Your sea monster videos offer such a view into the prehistoric world. Its hard to describe in words, but hearing about massive marine macropredators make it feel so immersive. Kinda like how a poem can create an image. I dont know if that makes sense. Sea Monsters are cool

  • @chrisrandom1404
    @chrisrandom14042 ай бұрын

    Alright. Time for someone to invent a time machine. We need answers.

  • @zachf632
    @zachf632Ай бұрын

    Hi I’m a finance guy. Not sure how I ended up here. But this video is wonderful. What a great educational resource. And it’s so entertaining. Keep it up

  • @LiliumCruorem
    @LiliumCruorem2 ай бұрын

    All my favorite creators are dropping vids about this guy!!!! We eatin goooooood

  • @pborogeopaleo
    @pborogeopaleo2 ай бұрын

    Fantastic achievement, Paul De la Salle is a good friend of mine. And has been very inspirational with my amateur Palaeontology escapades ⚒️

  • @tamaltarudey8912
    @tamaltarudey8912Ай бұрын

    You can also do a video about the Mapusaurus roseae specimen MCF PVPH 108.145 which is represented by a massive pubic shaft and according to Coria and Currie's 2006 description of Mapusaurus it's about 10% bigger than the corresponding bones of the Giganotosaurus holotype specimen, indicating a very large theropod.

  • @noahsmethers9339
    @noahsmethers93392 ай бұрын

    The crazy part about paleontology is just how little we know! It takes us dozens of textbooks to record summaries of human history, yet the millions of years before have 1 textbook in comparison! Thanks for making these videos, even if they sometimes leave me with more questions than answers

  • @quakethedoombringer
    @quakethedoombringer2 ай бұрын

    *WWD Liopraurodon quietly sobbing in the corner*

  • @drothehero4784
    @drothehero47842 ай бұрын

    brilliant video man❤❤

  • @DreadEnder
    @DreadEnder2 ай бұрын

    Was the new paper good or bad timing? Because it happened just before you were going to publish a video on it, but it was also JUST before.

  • @TheVividen

    @TheVividen

    2 ай бұрын

    I was in contact with the authors beforehand, so I knew when it was coming out and planned this video accordingly.

  • @DreadEnder

    @DreadEnder

    2 ай бұрын

    @@TheVividen really? Awesome! I remember you said you talked to someone about something related to the video but I didn’t realise it was about the paper itself!

  • @TheVividen

    @TheVividen

    2 ай бұрын

    ​@@DreadEnderYeah, Paul was a huge help!

  • @DreadEnder

    @DreadEnder

    2 ай бұрын

    @@TheVividen hail palaeo Paul!

  • @Vulcano7965
    @Vulcano79652 ай бұрын

    That video title reads like a one sentence horror story. Nice work! prehistory continues to impress! What the hell did that thing eat to support its size?!

  • @Vulcano7965

    @Vulcano7965

    2 ай бұрын

    Walking with Sea Monsters needs to adjust its rating for the triassic as it seems :D

  • @S-T-E-V-E
    @S-T-E-V-E2 ай бұрын

    Great video! 👌

  • @Henry2-bj1ro
    @Henry2-bj1ro2 ай бұрын

    Movement to call the giant Temnodontosaurus sp. (Huene 1922) the “Huene giant”

  • @Starbright_
    @Starbright_2 ай бұрын

    I’m patiently waiting for the day when we can confidently say that the blue whale isn’t the largest creature to have ever existed. I am so holding out for those 30m+, 100t+ Ichthyotitan size estimates, even though they may be a bit farfetched.

  • @edutainme7265
    @edutainme72652 ай бұрын

    Thank you, that was fascinating

  • @DreadEnder
    @DreadEnder2 ай бұрын

    I wonder what the next palaeo documentary will be on.

  • @alihasanaxe4936
    @alihasanaxe4936Ай бұрын

    The craziest thing to me whenever looking at size estimates is the fact that, statistically speaking, it's unlikely there's a single fossil in the world belonging to a truly huge member of it's species. The really big ones would be monstrous

  • @iguanobro9925
    @iguanobro99252 ай бұрын

    scientific name proposal: something related to a Godzilla character (example: serizawaensis).

  • @loowick4074

    @loowick4074

    2 ай бұрын

    We saving that name for a 150 tonner

  • @quakethedoombringer

    @quakethedoombringer

    2 ай бұрын

    I am a bit surprised they haven't picked up kaiju names from Ultraman, considering they have a bunch of pseudodino looking dinos

  • @evanlephrog7337
    @evanlephrog73372 ай бұрын

    RAIDEN, STOP THAT UH... FISH LIZARD?

  • @joebrat6809
    @joebrat68092 ай бұрын

    This should really have been the monster in Jurassic World rather than the Mosasaurus, which, judging by the latest estimates, was at most 45 feet long. Still a beast...imagine a monitor lizard that size in a feeding mode. Crazy. But this one would dwarf even a Sperm Whale.

  • @masonharkness6437
    @masonharkness64372 ай бұрын

    Surprised but not shocked by this, if prehistoric life could’ve supported titanosaurus on land back all those millions of years ago I can only imagine what might’ve grown in those seas 😳

  • @DreadEnder
    @DreadEnder2 ай бұрын

    I thought this was coming tomorrow.

  • @tyrannotherium7873
    @tyrannotherium78732 ай бұрын

    Ichthyosaurs are one of the most coolest marine reptiles ever right now I’m on the chapter on the dr Darren Naish book on ancient marine reptiles

  • @settratheimperishable4093
    @settratheimperishable4093Ай бұрын

    Here I was, really thinking we could have at least one record in our time, with the Blue Whale being the largest animal that has ever graced our planet. My disappointment is immeasurable and my day is ruined.

  • @SherlandShrouht-esse
    @SherlandShrouht-esse6 күн бұрын

    Man, I just realized how terrible being eaten by a giant ichthyosaur would be. You’ll hope to get crunched, but if it just ends up swallowing you, you’ll be left fighting for your life in its mouth trying not to get crushed by its tongue, not to get stuck in its esophagus, and then hopefully it’ll regurgitate you and chew you up before you end up slowly dissolving in its stomach.

  • @williamdaviddiazcuchimaque7511
    @williamdaviddiazcuchimaque75118 күн бұрын

    Imaginen el dia que descubremos que la criatura con fuerza de mordida mas poderosa de la historia fue un ictiosaurio

  • @thenamesianna
    @thenamesianna2 ай бұрын

    >37.5 metres long >not fully grown Golly gee I hope it was at least CLOSE to being fully grown !

  • @piotrkarp9562
    @piotrkarp95622 ай бұрын

    If this is Triassic period than my bet is on that he hunted giant squids. Squids were dominant spiecie numberous times before giant reptiles time and with downsizing dunkleops and other bone fishes welp... someone had to hunt them. It's also hard to find fossils of them if there haven't any shell (modern giant squids doesn't have them neither).

  • @Lobsterwithinternet
    @LobsterwithinternetАй бұрын

    Finally, something to make the Megalodon fanboys sweat.

  • @titanialovesheart

    @titanialovesheart

    Ай бұрын

    Megalodon is still comparable, through MNHN Type or Gracile MNHN. I think.

  • @Otodusmegalodon

    @Otodusmegalodon

    Ай бұрын

    ​@@titanialovesheartYeah gracile MNHCP62 specimen was like 164 tons...but still way less than high estimates of aust..

  • @titanialovesheart

    @titanialovesheart

    Ай бұрын

    @@Otodusmegalodon Probe the high estimates for me. 🙃☝️

  • @moolate127

    @moolate127

    19 күн бұрын

    Megalodon fanboy here, I think anyone who isn't a 12 year old boy doesn't care which creature is bigger or more ferocious. They are both amazing creatures that we will never get the chance to see in person.

  • @SpookyGrim
    @SpookyGrim13 күн бұрын

    Man am I glad these aren’t around anymore. The ocean is scary enough but the idea of having a possible 100+ ton 35m long creature floating around is terrifying. Gonna stay out of the water just in case 😂

  • @extraterrestrialhorse9722
    @extraterrestrialhorse97222 ай бұрын

    Yo! One question: are you calling it nature's final boss as a reference to The Rock? If so, what did you think of WM XL???

  • @Procrastinater
    @ProcrastinaterАй бұрын

    Why does nearly every blue whale comparison illustration have the blue curled up like an olympic diver, yet is scaled to 33 meters? (which is a false measurement in the first place) Props to this video for at least having one comparison shot where this isn't the case. You can sense the whale-lovers scrambling to deboonk this though, cannot have an animal bigger than the blue whale existing.

  • @tkermi
    @tkermi2 ай бұрын

    Their head shape on these drawings looks interesting and kind of funny. Has features reminding me of 3 types, fish, reptilian and mammal.

  • @Mikailodon
    @Mikailodon2 ай бұрын

    These ichthyosaurs were already the size of blue whales, I didn’t even know they were even still growing. That’s just ming-blowing. Also, Dean Lomax is such a great paleontologist who is knowledgeable about ichthyosaurs and his Locked in Time book that I got at TetZooCon 2023 inspired me to make a video about extraordinary fossils soon. Nice video

  • @steveirwin3594
    @steveirwin35942 ай бұрын

    I'm confused. I thought the Aust Colossus and Lilstock monster were from the same creature? Is the aust colossus NOT a specimen of Ichthyotitan? Edit: Woah and I'm excited to hear more about your book! Is there a place I can learn more about it?

  • @TheWigglergler

    @TheWigglergler

    2 ай бұрын

    They may or may not have been the same species. They were certainly very closely related, but there's a large temporal gap between the two, so we don't know for sure.

  • @Paralititan
    @Paralititan2 ай бұрын

    There is no evidence that it is still a juvenile. Ichthyosaur histology is very difficult to interpret; it is highly vascularized and almost never preserves any kind of growth marks. We therefore simply can't tell ontogenetic stage through histology. A major flaw in the paper.

  • @francissemyon7971

    @francissemyon7971

    2 ай бұрын

    Is there a source for this ?

  • @vikingskuld

    @vikingskuld

    2 ай бұрын

    Thank you for pointing this out. As far as a source for the information - personally I feel if it's that important to you then look it up. Either way it doesn't affect me.

  • @Paralititan

    @Paralititan

    2 ай бұрын

    @@francissemyon7971 I would read Anderson et al. 2019 on Stenopterygius, Kolb et al. 2011 on Mixosaurus and Houssaye et al. 2014 Ichthyosaur general

  • @Paralititan

    @Paralititan

    2 ай бұрын

    @@vikingskuld What frustrates me is that at least one author should have known this. I am unsure why they kept it in in this way. If I had reviewed, I would have asked for major revisions in the ontogeny discussion.

  • @vikingskuld

    @vikingskuld

    2 ай бұрын

    @@Paralititan as a lay person who is just into learning and studies genetics geology and fossils for fun, I seriously thank you. I argued against Clovis first when I was younger. So many times academics can get stuck in a huge story and not point out the facts. In the video I was laughing to myself thinking hey how do we know this isn't a bobble head ich. Lol Then not long later that very comment was made. That kind of blunt straightforward honesty is exactly what we need in the sciences. Just wanted to say thanks

  • @Cassave78
    @Cassave782 ай бұрын

    I have no clue what was in the water during the Triassic, bu goshdang Ichtyotitan is a unit! I hope we can find some proper postcranial material of the Titan Fish Lizard and learn more about the ecology of the Triassic oceans one day

  • @andrewdrednaught
    @andrewdrednaught2 ай бұрын

    So it turns out there could've been blue whale-sized marine predators just like Walking with dinosaurs proclaimed. Just not the liopleurodon.

  • @generallyupsetfetus
    @generallyupsetfetus2 ай бұрын

    These things would've/could've been quite close to the size of the first Godzilla, who stood at 50 meters. Horrific.

  • @polytropos1.1

    @polytropos1.1

    2 ай бұрын

    Fortunately, ichthyosaurs did not stand.

  • @mahasohona966
    @mahasohona9662 ай бұрын

    that "Where were they in the food chain>?" in the end made me wonder if there could have been another giant reptile who preyed on this one...

  • @fiery_gamerz
    @fiery_gamerzАй бұрын

    Nature's final boss when Human pulls out Torpedo

  • @heinrichharkonen2084
    @heinrichharkonen208423 күн бұрын

    25 m long Icthyotitan: This isn't even my final form

  • @raging_crocodile2081
    @raging_crocodile20812 ай бұрын

    We’re gonna need a bigger boat

  • @6thdayreptiles414
    @6thdayreptiles4142 ай бұрын

    Bro even at 32 meters it would be the same size as a blue whale if not bigger 💀, such an amazing animal

  • @josewayneoninguemd7740
    @josewayneoninguemd77402 ай бұрын

    I like to think that aust colossus and lilstock monster could be the same species from hector's ichtyosaur but growing, since they have VERY big sizes

  • @TheVividen

    @TheVividen

    2 ай бұрын

    They might be! More material may clear that up

  • @jesseorlofske2694
    @jesseorlofske269426 күн бұрын

    We need ichthyotitan in a chased by sea monsters sequel.

  • @FireWolfGamingYT
    @FireWolfGamingYT16 күн бұрын

    As an ark player, I can confirm this is bigger then the itchys in the game

  • @vikingskuld
    @vikingskuld2 ай бұрын

    Hey i wanted to say thank you so much for the up front honesty. Academia has gotten so bad at extrapolating a huge story from such little information these days. Even the evolution mechanisms are debatable and in doubt. I truly appreciate just the facts grea job on this video.

  • @rileyernst9086
    @rileyernst90862 ай бұрын

    Jeez. That orca looks snack sized.

  • @lawrenegummy4736
    @lawrenegummy47364 күн бұрын

    imagine seeing the front of this 25 meter monster swimming toward you in the deep darkness .

  • @bozoboysinc8287
    @bozoboysinc82872 ай бұрын

    Imagine going on a boat in ARK when a fully grown giant sea lizard shows up.

  • @rsuriyop
    @rsuriyop2 ай бұрын

    Lilstock... Lilstock of horrors! 🎵

  • @janakipremaratne953
    @janakipremaratne9532 ай бұрын

    Hi, I was just wondering what the most likely mass from the Aust colossus is?

  • @TheVividen

    @TheVividen

    2 ай бұрын

    Minimum mass scaling from Shastasaurus is about 170 tonnes. Other ichthyosaurs can get higher or lower

  • @janakipremaratne953

    @janakipremaratne953

    2 ай бұрын

    @@TheVividen oh ok thanks.

  • @janakipremaratne953

    @janakipremaratne953

    2 ай бұрын

    @@TheVividen Also, what is the most likely estimate for a fully grown individual of the aust colossus's species?

  • @TheVividen

    @TheVividen

    2 ай бұрын

    ​@@janakipremaratne953That unfortunately we don't have enough information to tell. We have no idea how much more growth it had left--it could have been quite minimal

  • @janakipremaratne953

    @janakipremaratne953

    2 ай бұрын

    @@TheVividen oh, ok thanks

  • @urick15
    @urick152 ай бұрын

    So is the aust specimen and icthyotitan the same animal?

  • @psalmerperena4120
    @psalmerperena4120Ай бұрын

    As a Megalodon fan, I have to admit that Meg will lose against this beast.

  • @TheDinoNerd
    @TheDinoNerd26 күн бұрын

    JW mosasaurus: MWAHAHA, I ALONE CAN DEFY NATURE! Icthyotitan: Yes, but actually no.

  • @danielrobinson7872
    @danielrobinson7872Ай бұрын

    I’ve always figured there were bigger animals in the past than the blue whale. It’s cool, but not shocking. I’m just upset knowing there are millions if not billions of creatures we’ll never know because they never fossilized. Thinking about all of the soft bodied creatures that will never be discovered kind of makes me sad, because they haven’t even left behind a legacy for us to find.

  • @charnjeetsharma5368
    @charnjeetsharma53682 ай бұрын

    Aust is simaliar to the Gargantuan Levithan from Subnatica.

  • @heinrichharkonen2084
    @heinrichharkonen208423 күн бұрын

    Perucetus colossus: Pathetic

  • @danilocastro3109
    @danilocastro3109Ай бұрын

    We got ichthyosaurus glow up before gta 6 😭🙏

  • @blackking7512
    @blackking75122 ай бұрын

    Ummm. Wouldn't this mean that might have also been eating things that were bigger than itself? That's scary to think about. The ocean is ridiculous.

  • @tyrannotherium7873
    @tyrannotherium78732 ай бұрын

    4:32 I interviewed this KZreadr

  • @darusnelson2620
    @darusnelson262022 күн бұрын

    This planet has had amazing animals

  • @KyoryuDiabolos
    @KyoryuDiabolosАй бұрын

    Makes you wonder how bigger or smaller they would have gotten had they not gone extinct and survived past the late Cretaceous

  • @lightman3581
    @lightman35812 ай бұрын

    Did you know that Hector Ichthyosaurs from New Zeeland has been confirmed as real?

  • @TheVividen

    @TheVividen

    2 ай бұрын

    I'll be covering it soon!

  • @seatspud
    @seatspudАй бұрын

    It was only a juvenile... (Someone had to use the Subnautica Garg meme)

  • @marcuscallaghan2238
    @marcuscallaghan2238Ай бұрын

    imagine how much food mustve been around then 😮

  • @michaelblevins1651
    @michaelblevins1651Ай бұрын

    There’s a chance that these animals might have Grown through their entire life (like Crocodilians or just had a long period of time before they stopped “Growing”

  • @dreadblock7592
    @dreadblock75922 ай бұрын

    Ark did this guy dirty

  • @bubbly9990
    @bubbly99902 ай бұрын

    So big we have to re-label it as: Kaiju……. Bruh 😆

  • @bestuan
    @bestuan2 ай бұрын

    Edging to this 😂🎉

  • @WASPINATOR-TERRORIZEEEEE
    @WASPINATOR-TERRORIZEEEEE2 ай бұрын

    Aust colossus mogs megalodon and livyatan

  • @shinplayzproductions8107
    @shinplayzproductions8107Ай бұрын

    "The largest carnivore the world has ever seen.."

  • @AND-od5jt
    @AND-od5jt2 ай бұрын

    6:16 Since lizards and snakes (among others) are indeterminate growers, are we SURE that the same isn't true for (some species) of dinosaurs?

  • @prehistorichero2755
    @prehistorichero27552 ай бұрын

    I would’ve imagine these giant icthyosaurids are more of like filter feeders or school fish suckers (basically) than opportunistic apex predators. What do you think?

  • @saengpharn3054

    @saengpharn3054

    2 ай бұрын

    That would depend on the teeth

Келесі