The T-Rex Wasn't The Largest Cretaceous Carnivore...This Was

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The T. rex is often painted as the king of dinosaurs and the cretaceous. And thanks to this title, it is sometimes regarded as being the largest predator of its era. However, despite being the largest carnivorous dinosaur, it was not actually the biggest predator to live during the cretaceous or even during its own existence, as that honor went to something much more sinister, the Mosasaurus.
0:00 Intro
0:55 Discovery & Misclassification
1:34 Naming
2:04 Early Reconstructions
2:36 The 5 Known Mosasaurus Species
3:00 Classification
5:35 Size
7:19 Massive Skull & Killer Teeth
8:01 Bite Force
8:46 Diet
8:54 Mosasaurus Bite Marks & Stomach Contents
9:33 Hunting Large Reptiles
9:50 Speed
10:54 Vision & Smell
11:36 Mosasaurus Vs. Mosasaurus
12:32 Cannibalism
12:54 Disease & Infections
13:18 Range & Habitat
14:21 Animals It Lived With
15:26 Competition With Other Giant Mosasaurs
16:01 Tylosaurus Attack On A Mosasaurus
16:29 Extinction And Possible Survival (for a bit)
Artwork in thumbnail by Gaëlle Seguillon
"Spacial Harvest" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
creativecommons.org/licenses/b...
Copyright Disclaimer under Section 107 of the copyright act 1976, allowance is made for fair use for purposes such as criticism, comment, news reporting, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favour of fair use.

[@ExtinctZoo]

✅ Support my channel by getting Fishing Clash on your iOS/Android device for free fishingclash.link/ExtinctZoo ! Use my gift code EXTINCTZOO to get a $20 reward, and share your biggest catch in the pinned comment!

[@mudfossiluniversity]

My biggest catch is Typhon in the desert in Morocco....recorded by Hesiod and Appolodorus. I have a vid on my Channel about him. "[1.6.3] When the gods had overcome the giants, Earth, still more enraged, had intercourse with Tartarus and brought forth Typhon in Cilicia,95 a hybrid between man and beast. In size and strength he surpassed all the offspring of Earth. As far as the thighs he was of human shape and of such prodigious bulk that he out-topped all the mountains, and his head often brushed the stars." The vid is called "The Truth about Dragons and Giant Serpents Far Exceeds the Myths". Thank you.

[@HassanMohamed-rm1cb]

Why don’t you get to think and make a suggestion creating another KZbin Videos Shows that’s all about the Extinct Prehistoric Amphicyons (Bear Dogs) on the next Extinct Zoo coming up next?!⭐️⭐️⭐️⭐️⭐️👍👍👍👍👍

[@a-lambo-boi]

The segment of Penza and the quadrant's size are based on the outdated belief that the mosasaurus possessed a 1:10 skull to body length ratio, based off of tylosaurus, but a 2014 study, along with finding the mosasaurus to be more robust than previously believed, reevaluated this down to a 1:7 ratio, although the ratio is now believed to be around 1:7.4. Penza under these ratios, would be around 12.5 metres long and 10.3 tonnes, while the quadrant, after a gdi analysis by faedino, would measure 14.5 metres and 15.9 tonnes. Also, the paper did confirm tylosaurus have the 1:10 skull to body ratio, and a specimen called bunker was estimated at 17 metres and a mass of over 17 tonnes, again from a gdi from faedino, although this mass estimate is still a work in progress. (I think)

[@rogerouellet2434]

😊😊😊

[@BrotherWulfe]

Y tutti___ty_yyyyyyytt5

[@Squirrelmind66]

When I was a kid, I used to think that Mosasaurus was named that way because it used to part the waters… like Moses

[@oucyan]

lol. Actually, River is in the meaning of the Mosasaurus' name, and Moses means: "[She] brought [him] out of the water". So Moses and the Mosasaur might have similar linguistic origins in the meanings of their name

[@WangNurMouth]

Fight fight fight!

[@oucyan]

@@twinturboray RIP

[@rupeeslang5121]

@@twinturboray This is correct, I live next to the Maas in Maastricht and this is also the place where Mosa saurus skeletons are found now and then. We have one displayed in the local museum. My dad was part of the crew that found it.

[@davidanderson_surrey_bc]

Curiously, just a few hundred yards behind the Mosasaurus skeleton were found the remains of a whole school of Egyptosaurs. Seems they'd been caught in some kind of marine disaster.

[@THETRIVIALTHINGS]

Terminonatator. "I'll never be back".

[@davidanderson_surrey_bc]

"Hasta la vista, brachiosaur."

[@davidanderson_surrey_bc]

"Everybody back to the Cretaceous!"

[@davidanderson_surrey_bc]

"Consider this a diplodocus."

[@davidanderson_surrey_bc]

"To crush your enemies, see them driven before you, and to hear the lamentations of their hatchlings."

[@davidanderson_surrey_bc]

"Come with me if you want to go extinct."

[@dillon26]

I love coming across channels like this that dive deep into prehistoric life and ecology while still making everything engaging to watch. Awesome content dude.

[@AncientAnimalAtlas]

Yeah very interesting indeed!

[@Karl_Jayce]

I love his videos

[@saladinbob]

This thing brings a whole new meaning to the line "we're going to need a bigger boat".

[@d0nKsTaH]

Everyone knows Godzilla was the largest....

[@GiDiGaD000]

We found him 2 here in NL

[@Crakinator]

Pretty funny how Stastasaurus is SO BIG that you can fit the entire “not a Cretaceous animal” text right on top of it 😂

[@pyrotron22]

What about Cretaceous Pliosaurs such as Sachichasaurus or Monquiasaurus? They were similar in length (probably a bit shorter), but way bulkier than any mosasaur. And btw, Mosasaurs didn't rule during the entire Cretaceous, instead, they dominated the oceans during the last 20 million years of the cretaceous. Nevertheless, great video

[@maxwelledison03]

Akshually😂😂😂

[@pyrotron22]

@@maxwelledison03 ☝🤓

[@elmochomo8218]

What is this lil dude wafflin about

[@mikes5637]

*pushes glasses up on nose "What about..." 😅

[@pyrotron22]

@@elmochomo8218 I'm very sorry if I expressed myself wrong, but English is not my native language. I just wanted to point out a couple of mistakes made in this video.😕

[@pablojose4890]

I wish dinosaurs had easier names to remember

[@syedmuhammaddaniyalhasansh2276]

We know dinosaurs from their genus names only. Animals living today although we know them by their common names, have hard to remember genus and sub genus names too. The African Elephant is named Loxodonta and the European Rabbits are called Oryctolagus

[@rsuriyop]

That’s the problem. Most extinct prehistoric animals, especially dinosaurs, aren’t given common names. Although there are a few select extinct mammals that are more known by their common name given to them than their scientific name (like saber toothed tigers, wooly mammoths, and dodo birds).

[@travisdelafuente1150]

The Mosasaurus has been getting a lot of fame recently thanks to Jurassic World and rivals that of the Megalodon and the more I learn about this prehistoric predator of the seas, the more it becomes crucial that we all need to except the fact that the world was full of amazing and equally terrifying animals of the past. Bravo!

[@Bearded_Ham75]

It's terrifying to think of a Monitor the size of a Mosasaurus, i used to have a Nile Monitor back in my early 20's that I took from a friend who wanted to get rid of it, it was maybe 2 feet long with it's tail and mean as hell, handling it was not fun

[@chrislomax8667]

I was given a 5 foot Nile monitor, wicked creature! If it got out, I had to throw a blanket over it. Not only did it have a vicious bite, but it would whip you with the tail!

[@victory8928]

Water monitors: precious beans who will attack when stressed Nile monitors: attack cause always stress/ out for blood.

[@epiceducation867]

How are you pronouncing all those names so easily

[@John-nf7ug]

Practice

[@Djentle-Rain]

When you are spitting Dino names as a full time job it gets easy lol how do you know it didn't take him 1939472 takes to say one of the names lmao

[@Adam-tu1qx]

I like how he was rapid firing sea creature latin names flawlessly then just randomly in the middle "sand sharks"

[@dylano7242]

It's ai bot voice

[@Zhasper]

​@dylano7242 it's not. What is your proof?

[@jurassicroom7673]

Love that Caiman Lizard color scheme for the Mosasaur in the thumbnail.

[@AntoniusTyas]

That's artwork from Gaelle Seguillon, one of the artist in Prehistoric Planet project. That art piece was used as the concept for the _Mosasaurus_ spa scene in episode 1 season 1 of Prehistoric Planet.

[@syedmuhammaddaniyalhasansh2276]

It's common trait in marine predators

[@windtalker4191]

Isn't it argued that snakes also evolved from monitor lizards? I believe snakes by then had already lost their feet; Mosasaurus probably evolved directly from monitor lizards and their feet evolved into fins.

[@birbdad1842]

No. They all had a common ancestor but are seperate groups

[@SarastistheSerpent]

This phylogenetic theory has been discredited. Snakes are today believed to be part of a different lineage of lizards (Ophidia) than varanids (anguimorpha). Interestingly, many studies indicate that mosasaurs are within Ophidia and that they represent a sister clade to Serpentes, however this has not been proven.

[@Sun-God2]

​@@birbdad1842hey what does Anagenesis mean

[@Redbeardblondie]

I think my favorite part of your videos, something I never see in other similar channels, is how you cover such a wide array of contemporary species in the area! It paints so much more of a complete and vivid picture of the ecosystem!

[@davidanderson_surrey_bc]

Steven Spielberg: My next movie will be called "Mosasaur". Bruce the shark: You're gonna need a MUCH bigger boat.

[@seabass1428]

Love the long form videos! Excited for more. Also congrats on 100k.

[@Misp7423]

I definetly prefer the new thumbnail! Even though these animals were ferocious, they still were animals which this thumbnail shows really well.

[@archosaur_enjoyer824]

*Tylosaurus proriger left the chat*

[@thehairywoodsman5644]

“Never get out of the boat…never get out of the boat…I got to remember: never get out of the boat,” Chef

[@reviolkande6155]

wont help u unless ur boat is at leat 100feet

[@thehairywoodsman5644]

@@reviolkande6155 always easy to figure which commenters are too young to get the reference ...

[@patricktracy1966]

@@thehairywoodsman5644 The horror.

[@thehairywoodsman5644]

@@patricktracy1966 finally somebody gets it

[@user-ly1dc5lt3o]

These videos are very well put tohether and are a fun and interesting watch! I love this content, can't wait for more!

[@RE4Merchant]

T Rex ruled the land. Mosasaurus, the seas.

[@prashantmishra9985]

Deinosuchus

[@prashantmishra9985]

And Megalodon

[@RE4Merchant]

@@prashantmishra9985 Megalodon ruled after Mosasaurus went extinct. Because Megalodon hadn't yet evolved when Mosasaurus was around. Deinosuchus wasn't a sea animal. It was a river animal.

[@MaximumPrime]

⁠@@prashantmishra9985 Deinosuchus is only around 35 feet long and would get squashed by a Trex

[@magicdomaingodzillaisfodder]

Deinosuchus is 14 tons while t-rex is 11 tons​@@MaximumPrime

[@davidbarringham7992]

Kudos for your naming it’s cohabitors in the latter part of this illuminating presentation. Thanks!

[@AncientAnimalAtlas]

Very interesting video! Learned a lot of information! Great video 😍

[@marssilver]

Dude, your videos are blowing up 🎉

[@abdellahiehreimo3402]

Very intriguing and well made Thanks.

[@Vindsvelle]

Besides your consistently great research and overview, it's refreshing to see sophisticated CGI animations of its speculated appearance and hunting behavior. Forgive me if I missed an included credit, but what's the provenance of the mososaur animations for this episode?

[@hordegaming4771]

To me their closest living relatives are probably monitor lizards, snakes could be a contemporary but the overall body plan of a Mosasaur isn't far from modern day monitors, especially water monitors. Just look at the skulls of both and you can tell they're linked and I wouldn't count out the possibility that Mosasaurs eventually over 65 million years slowly evolved to go back on land and become what would become the likes of Megalania a giant Komodo Dragon and a splinter group retained their water like tendencies to become water monitors like the Asian water monitor lizards today. That's my theory but they were probably the most formidable marine predators of their time and could probably rival most today if the Earth was warmer like it was back then.

[@FaeQueenCory]

Fun fact: there's a lot of debate on if snakes evolved losing their legs on land or in water. So it could easily be that snakes evolved from a mosasaur line directly.

[@victory8928]

@@FaeQueenCorysnakes already were losing their legs prior to the mosasaurs established themselves though

[@anzulem3752]

I really enjoy your videos !! Keep it up:) could you consider doing one about deep sea creatures ?

[@gordonfernandes6873]

In Short.. The waters of the Cretaceous...Was pure HELL... For Humans ..🤔☠️

[@victory8928]

And some people think orcas will dominate for some reason as if there isn’t tons of predators that can repel orca pods and feast on calves when they have the chance. Doesn’t mean much when you lose tons of calves each year to predation and the stresses that come from that. It is hell from whatever isn’t adapted to live in it

[@rondareongaming9161]

That moment you mix up interspecific with Interspecies lol

[@ArtMares91]

**a platycarpus crashes into Doofenshmirtz Evil Inc** Doofenshmirtz: A platycarpus? **platycarpus puts on a fedora** Doofenschmirtz: Perry the Platycarpus?!

[@LarzGustafsson]

The mosasurus is fascinating!

[@peterashby-saracen3681]

I really find it incredibly tedious that TRex is constantly flaunted as the supreme predator of all time. Yes, it was an amazing apex predator but there are so many more in prehistory that were just as awesome if not far more so. The marine predators are definitely among those as must be the giant pterosaurs and indeed so many groups both pre and post dinosaur.

[@lewisdogdson416]

Supreme predator on land for sure.

[@animalsoundsreal]

Very interesting information on your channel👍💥🤝

[@TasimanaOG]

tylosaurus. P was larger than Mosasaurus. H - most recent estimates for the largest individuals are around 17-19 tons with a higher estimate of 22 tons being possible. By comparison Mosasaurus. H was around 10 tons with 15 being possible but unlikely.

[@francissemyon7971]

Source ?

[@victory8928]

Isn’t tylosaur also bulkier?

[@francissemyon7971]

@@victory8928 The contrary, Tylosaurus was lightly built.

[@theMenace985]

Love your channel, I hope to see a video on the Haast Eagle or the Megalania.

[@ryanfischer5011]

Really happy to see your channel, love your interpretations of extinct animals.

[@cadebritt8001]

Remarkable ! And thanks for the video.

[@Despond]

The largest lifeform on this planet that we know still currently exists. Amazing when you think about it and how old the Earth is.

[@PrehistoricMagazine]

Nice video as always. Mike from Prehistoric Magazine

[@trkowalski34]

I personally think you should make a video about the sauropods Seismosaurus, Barosaurus, Argentinosaurus, Patagotitan, Sauroposeidon, and Dreadnoughtus. I would love to see that! i love to find all of the fascinating facts about the prehistoric mysteries.

[@syedmuhammaddaniyalhasansh2276]

Since we're talking about the largest Cretaceous carnivore wouldn't that be Spinosaurus? Estimates for Spino are larger than T-Rex and Mossasaurus but T-Rex was more bulkier

[@markcobuzzi826]

Last time I heard, Spinosaurus is currently estimated to be longer than T. rex but not as heavy. It sounds similar to how the giant squid is generally considered longer than the colossal squid, but most of the verified evidence suggests colossal squid has the greater maximum weight, due in-part to its bulkier proportions. And since mass is usually the go-to metric for size, that would still make T. rex the record holder for largest land predator. That is, unless some new specimens/studies come out suggesting the Spinosaurus’ maximum size was greater then previously thought.

[@arijit3110]

Size is determined by weight not length.

[@MaximumPrime]

Trex is still heavier than Spinosaurus but not longer

[@eschaton5058]

MAAAAN THAT REFERENCE IN THE BEGINING!!

[@PolarBearFan24]

mosasaurus is my favorite marine reptile

[@hcpsmansdddeglm]

its also the most well known marine reptile

[@PolarBearFan24]

thats a cool fact@@hcpsmansdddeglm

[@markcobuzzi826]

Speaking for myself, I would go further and say that Mosasaurus is my favorite prehistoric marine beast in general. To me, it strikes this uncanny balance between being familiar (like Megalodon, Livyatan, etc.) yet also looking more otherworldly/mythical (like the ichthyosaurs, plesiosaurs, etc.). Plus, it is not very common to see a top niche in the Mesozoic ruled by an animal so closely related to the smaller animals of our modern age.

[@rosenmary5353]

cool, my favourite prehistoric sea creature is the dunkleosteus :)

[@countchompula1896]

Imagine a Deinosuchus and a Mosasaurus getting into a tug of war with a Archelon

[@BlastedMaster]

I'm cleaning coffee off of my desk right now. Terminonator is indeed too hilarious for a sip of joe.

[@AussieRider20]

I love the deadliest seas show! Its something i love to go back and watch

[@cursedseagullgames]

I know this is about mosasaurs, but I lost it at 7:16 seeing Shastasaurus Pacificus. Look at them, they're so round and rotund! Another predator that is friend shaped to perfection. ; w ;

[@nobodyspecial115]

😂 that beginning quote sounds like something my buddy would say, been trying to get him out on a boat forever now.

[@akselbentsen3683]

So we’re not gonna talk about the terminonator???

[@firexeno7922]

This video nonfiction what 💀

[@JuanPiece.]

💀💀💀

[@steveshoemaker6347]

AMAZING CHANNEL.....Thanks

[@nickjonaz3710]

Great content 🔥

[@johntillman6068]

Mosasaurs did not live throughout the Cretaceous Period. So far, they've been found only in rocks from the Late Cretaceous Epoch.

[@victory8928]

It appears that they might have but were relatively few in numbers and smaller less of the ocean kings and more in the back were they there the entire period? Most likely not but they may have started off as fresh water animals before moving into the sea

[@user-xe3mj9kb2x]

Biggest, most dangerous, yadda yadda yadda. All hail the magical liopleurodon. Nothing trumps magical liopleurodon.

[@robwalsh9843]

I wonder about mosasaur intelligence. Monitors are pretty smart as far as lizards go, who knows what mosasaurs were capable of.

[@Lightman0359]

Surprising seeing the first 2 things they thought it was that the Genus didn't become Suchocetus or "Whale-Croc"

[@LonelyWolf-ij4xz]

Dang that list of competition put a spell on me 😂

[@jaysonspears464]

Thanks to the OP for also including the imperial measuring system. Not everyone knows the metric system.

[@tylercoombs1]

Man, who needs Pokemon.

[@LexJpFan14]

Me

[@YnseSchaap]

The first Mosasaurus Hoffmannii is currently in France that stole it in 1795 during the French occupation of Holland, it's still there 😁I think we would like to have it back

[@Amesang]

_"There's a fell voice in the sea!"_ _"It's Saurodon!"_

[@Misterguy187]

Love ur content👍

[@slappy8941]

Ur? You can't write out your words like a big boy? 😂😂😂

[@boxboxer4183]

​@@slappy8941.....it doesn't really matter tho...😐

[@Misterguy187]

​@@slappy8941does it matter?

[@Misterguy187]

I wasnt Sure if "your" was how you write it so I just said "ur"

[@user-fy8zz7xh2m]

Do you not think that these seperate dinosaurs could be the same dinosaur at a different age aka Jack Horner TED presentation?

[@whydoyougottahavthis]

WAY AWESOME BRO!!!!!!

[@storiedstrength]

14:44 At this point you’re just naming Pokémon

[@nealkelly9757]

Lol at the scene with the mosasaur swimming with a TRex in it's mouth

[@gimmeyourrights8292]

There's always a bigger fish.

[@beatboxinjonny]

9:07 I read it as hard boiled & was extremely confused for a split-second

[@hornetrage4365]

If anyone is interested in some amazing marine fossils, Morden Manitoba's Canadian Fossil Discovery Centre has an amazing collection. They have a vastly complete specimen of a Tylosaurus pembinensis named Bruce. There's also statues around the city of other prehistoric marine creatures.

[@glitterytrinket6246]

Great show

[@KrispyAimAssist]

Carnage count for this vid: 0:45 'first blood' 1:44 'Its behind me isn't it ahh death' 2:11 honorable mention 3:07 'bro thought his shell could protect him' 3:43 'Bro done ate chocolate' 6:16 'Where do u think ur going ahh death' 7:25 'blud thought his wings could save him and got caught lacking' 7:54 'too slow grasshopper ahh death' 7:57 'two is better than one ahh death' 8:03 'humans feed monster' 8:19 'leave my family alone ahh death' 8:24 'bros long neck was his downfall' 8:26 'blud done got killed while napping' 8:38 'bro rly thought land was safe' 8:44 'u stole my food ahh death' 8:57 'nah blud got abandoned by his friends' 9:15 'this snack kinda crunchy ahh death' 9:30 'Jeffery Dahmer ahh death' 9:33 'bros opps done took his place as king of the dinos' 10:19 'watch your jet bro, watch your jet! ahh death' 10:37 'You owe me money, that loan you took, its payday ahh death' 10:45 'blud rly thought that since he the lockness monster he safe' 10:48 'RKO' 11:06 'Great white shark king of the ocean I think not ahh death' 11:23 'Not on the first date ahh death' 11:28 'fish school shooting crustacean period edition' 11:34 'blud done got jumped for hogging the O2' 11:47 'gimme that back meat boy ahh death' 12:08 'bro rly thought he looking cute in this pic by walking on land' 12:20 'bro done forgot about skin cancer and died from sunburn' 12:58 'all you can eat buffet ahh death' 14:05 'bro ate chocolate part 7' 14:23 'fetch me theyre souls ahh death' 15:48 'honorable mention' 16:55 'Bro its just a prank'

[@yodatrucker420]

Dunk is my favorite fish meg is cool but dunk was just insane

[@LiMacBrazyy]

If it were possible I’d love too see all these animals alive in person it would be crazy seeing predators like these wit their crazy size

[@coledavidson5630]

8:59 uncanny valley skull

[@chheinrich8486]

Mosasaurs is quite literally the largest lizard ever😂

[@srobeck77]

literally or figuratively?

[@quakethedoombringer]

Triassic Icthiyosaurus: "Lol"

[@Danny-mg1hu]

its the largest Lizard??

[@billyherrington5112]

​@@quakethedoombringer they are not lizards. They are primitive zaurognats or last remnants of parareptilia

[@chheinrich8486]

@@srobeck77 literally, because their squamates(lizards)

[@valkerie2809]

I loved walking with dinosaurs as a kid. I still love it. It’s amazing

[@Weberkooks]

Love the name Terminonator for a sea monster

[@kieba2207]

Do you tought about publishing your videos on spotify as podcast??

[@Titantr0n]

Awesome video as always. And something for your consideration: I've found myself skipping over the promo "teaser" and missing content because I thought it was the promo, which came later. I dunno, obviously you know better but I'm not sure about the promo teaser thing :)

[@caramelpancakes2]

what is blud saying

[@yusavelli0448]

Terminonatator, I had to pause loool

[@meeverybody8826]

Does anyone know what TV show the very first clip is from? I saw it many years ago when I was a kid and have been looking for it for a while.

[@ExtremeMadnessX]

Walking with dinosaurs: Sea Monsters.

[@deathhimself4676]

Great video.

[@Karl_Jayce]

I love your videos

[@xsjadoridersc]

Cool video and pronouncing those names 😳😳😳😳

[@dominno2000]

Yaaaay! New video!

[@Tundraviper41]

The Mosasaur probably swam very similarly to Mondern day Monitor lizards and Crocodilians, which use their flattened tails like an Oar moving it from side to side which makes even the Largest Montior lizards like the Komodo Dragon swim at a Quick 12 MPH in water. although the Mosasaur would have been faster and more maneuverable .

[@victory8928]

Makes me wonder how good it was at burst movement

[@VFella]

I don't think that a mosasaur could stand a chance against a pack of orcas. Potwales are as big or bigger than the largest sea reptiles, and they can hurt at a distance with ultrasound. And modern day crocs are not much smaller than the cetacean ones. I think we miss appreciating how magnificent modern day sea animals are. Not to dis ancient creatures, but it is easey for us to feel a sense of awe and wonder when thinking of a plesiosaur or one of these large ichthyosaurs, while we don't realize that our modern companions on planet earth deserve just the same respect. Awesome video, BTW.

[@ricardoalbrechte6193]

There's no way a mosasaur could take a pod of killer whales!!! Killer whales hunt in packs. Come to think of it, a single bull sperm whale would take out a mosasaur no problem 9:30 !! Think about it.....

[@123darkpassenger]

How I’d love to be a fly on the wall during these times, To see all these animals interact with eachother

[@adriannegrete9586]

You forgot to mentioned about Cretoxyrhina whose the largest shark of its time. Even it rivals Mosasaurus as well as Tylosaurus.

[@El-Rico]

I'm sure that the teeth weren't designed, but evolved.

[@Jdne199311]

I cant wait till get a Mosasaur in Prehistoric Kingodm, have Nigel revoice that line in the game would be amazing.

[@Sanderly1820]

The head shape reminds me of a moray eel

[@wheelmanstan]

Seems pretty big, not Jurassic World level big though, but how's it stack up against a Megladon?

[@FaeQueenCory]

Whales: long, elegant, massive... Mosasaurs: chonk

[@tm43977]

Mosasaurus

[@nanonano.8025]

beautiful fairy tale

[@nigersaurusrex]

whats the name of the mosasaur speciemen that was 18 meters?

[@panoskarydis7947]

Penza specimen or the new one in 6:47-6:53.

[@healdiseasenow]

Holy crap that things big

[@00monkeydude001]

I thought it was gonna be a relative to the orca