When Sea Monsters Became River Monsters

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If any of you have seen WWD Sea Monsters, you would know to never enter the oceans and seas during the age of Dinosaurs. However, in true Mesozoic fashion, not even freshwater was safe back then as every so often, one of those ancient sea monsters would figure out how to make the 'leap' to freshwater, turning themselves into River Monsters!
Artwork in thumbnail by Joschua Knüppe
2:11 image was done by Tibor Pecsics
Music:
Intuit256 by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. creativecommons.org/licenses/...
Source: incompetech.com/music/royalty-...
Artist: incompetech.com/
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.

Опубликовано:

10 ноя 2023

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Комментарии : 303

@mrcomino6028 7 месяцев назад

I still cannot belive that prehistoric waters were full of creatures a sailor would find extremely close to those in legend, its a weird coincidence

@TYKZY.BRANX._TEEK.SEE.BRANCH. 7 месяцев назад

i KAN BELiEVE iT JUZT FiNE MAN [NOT YELLiNG, JUZT LiKE TYPiNG iN CAPZ]

@midgetydeath 7 месяцев назад

Historians: “Cameras didn’t exist then, so none of the tales could be true.” With video evidence: “I said these are extinct, so this must be a hoax because I’m God and so what I say miraculously is automatically true.” Public: “See? He said it, so it must be true you stupid conspiracy theorists!”

@mrcomino6028 7 месяцев назад

@@midgetydeath what are you on about

@melanimatejak6821 7 месяцев назад

Not quite. Giving the incredible array of shapes and sizes of aquatic reptiles, it is rather remarkable that no fossil of true sea serpent has ever been found. I am talking about a water snake that would be at least 20 meters long, to accurately mirror the sea monster of legend. Or any other serpentine-like non-reptile creature (whale Basilosaur, regardless what some folk claim, was anything but serpentine!). This monster remains a legend.

@mrcomino6028 7 месяцев назад

@@MrFirefox sure buddy

@DYXAnims69 7 месяцев назад

This is a River Monster Guy moment, he'll be having a field day with this if they are still alive today

@paleoph6168 7 месяцев назад

Jeremy Wade

@dario9793 7 месяцев назад

Just chilling in a deep pool with mosasaurus

@giagarex 7 месяцев назад

@@paleoph6168He's still alive

@OrganMcGorkan 7 месяцев назад

River Monsters will come back when commercial time machines are possible. The only reason Jeremy stopped was because he caught all of the noteable monstrous freshwater fish

@jasonpeacock9735 7 месяцев назад

@@giagarexthat’s what the Illuminati wants you to believe

@ToaOfFusion 7 месяцев назад

The waters of the Mesozoic make Subnautica look tame

@Kevintherhea188 7 месяцев назад

underated comment

@FerrexShelby-ed9hg 7 месяцев назад

mosaviathen

@DireNemesis 7 месяцев назад

Tbh subnautica IS tame

@the_roman_emperor_fisheater 5 месяцев назад

@@DireNemesisbro don't look behind you...

@CannibalisticWendigoGuy 3 месяца назад

fr lol

@CAWCarcharo34 7 месяцев назад

There are actually a few records of freshwater mosasaurs throughout their existence, from the Turonian to the Campanian. Most seem to belong to Tethysaurinae and all seem to be under 6 meters in length. It’s possible that competition with larger, more derived mosasaurs forced the Tethysaurinae to retreat into freshwater environments and retain their plesiopedal-plesiopelvic morphology far longer than their oceanic brethren

@karlakirkpatrick2214 7 месяцев назад

Back in the early 80's they discovered one of these in Hayden Alabama and they were still digging it up the last time I read about it and it made the world weekly news a tabloid that was in black and white print and pictures and it was owned by the National Enquirer back then by a former boss I knew that it was a real story because it made the television stations that we got by antenna and then by cable. And the Birmingham news as well.😮

@godzillacc5 7 месяцев назад

A friend of mine once said "we pretend they're not monsters anymore just because we gave em a name" and honestly, yeah.

@JediDrPepper049 7 месяцев назад

You should look up the definition of "monster".

@marzipancutter8144 7 месяцев назад

@@JediDrPepper049 He's got a point though. Since we fear what we don't understand, naming and classifying "monstrous" looking beasts will actively colour our perception to make them appear less fantastically dangerous. Of course, someone who has gone face to face with one would quickly disagree.

@JediDrPepper049 7 месяцев назад

@marzipancutter8144 no, he really doesn't. A monster is literally an imaginary creature. Words have definitions.

@marzipancutter8144 7 месяцев назад

@@JediDrPepper049 No, it isn't, like, at all? People have been calling real beasts monsters ever since the conception of the word. Imaginary beasts are a part of the definition, but it isn't an exclusive one. If some definitions limit themselves to imaginary creatures nowadays, those are neither universal nor very accurate. At best you can say monster *usually implies* imaginary, but excluding real monsters is disingenuous at best and horribly misinformed at worst. You can't just take the first definition that comes up on Google. The word monster can and will be used on real animals, and the only reason that trend may be in decline is precisely because of what godzillacc5 said. If you are in any way serious about the definition of things, you should recognize that linguistics are descriptive and you cannot force your homebrewn definition on people using the word correctly in everyday language. Now get outta here.

@JediDrPepper049 7 месяцев назад

@marzipancutter8144 and dumb people say trump won In 2020, does that make them right? Dumb asses misused words all the time. Tell you what, you got a smartphone, right? Got Google? Maybe then type in " Monster definition."" But that is just too big 🧠 for some people .

@des9930 7 месяцев назад

As a Florida man, I would 100% travel back in time to the period and place where Pannoniasaurus lived to wrestle it

@shorelinefishing9213 7 месяцев назад

As Florida man i would be the guy encouraging it

@genghiskhan6809 7 месяцев назад

As a Florida man, I would be trying to eat it.

@midgetydeath 7 месяцев назад

Remember to cover its eyes.

@piercemccauley7079 2 месяца назад

As a dude from Texas I’ll bring the beer and watch

@EwanCumia Месяц назад

We Floridians are a unique breed.

@ilikemorestuff 7 месяцев назад

I can only imagine how fertile and productive those environments would have been, in order to sustain multiple bloodlines of creatures so large.

@Crakinator 7 месяцев назад

It makes sense plesiosaurs would outcompete ichthyosaurs in a freshwater environment; ichthyosaurs are more specialized to swim the open seas, they’re literally built like torpedos. A world full of freshwater plesiosaurs would be terrifying, I wish I could see it.

@ExtremeMadnessX 6 месяцев назад

We actually don't know that there wasn't any freshwater ichthyosaurus.

@erichtomanek4739 7 месяцев назад

Sad Nessie noises. The genus name of the fresh water mosasaur comes from the Roman province Pannonia, which in time became Hungary. History repeats. Millions of years later, what's now Hungary, Black Sea and Caspian Sea was one large fresh water lake and had a fresh water species of Baleen Whale, or so I've read.

@REVOisMYname 7 месяцев назад

Mosasaurs are impressive since they didn’t rise following a mass extinction

@aff77141 7 месяцев назад

The level of ancestral, even instinctual memory that must be involved in so many legends taking the form of creatures that did once truly exist, but may have never even been seen by human eyes beyond fossils, is fascinating

@mortified776 7 месяцев назад

Very interesting that _P. inexpectatus_ might have had feet. Those would have been more useful for navigating an obstacle-ridden riverine environment than flippers. This is possibly one reason a certain lineage of lobe-finned fish evolved them in the first place!

@culture4519 6 месяцев назад

You could say it would be quite unexpected…

@jointcerulean3350 7 месяцев назад

It would be cool to see a video about quinkana the giant land crocodile of Pleistocene Australia that was around with megalania. Also it’s cool learning about these freshwater species that are generally known as marine apex carnivores. Wonder if any Cenozoic monitor lizards evolved similarly? There are reports in the Congo of a large semi aquatic varanoid of some kind reminiscent of the Borneo earless monitor lizard but a lot larger. Would be a cool discovery if there is some thing like that in the Congo.

@ryanhau1073 7 месяцев назад

An interesting note. The majority modern Marine Species that can thrive in Fresh Water just happens to be Air Breathers, so it's reasonable to say that almost all Prehistoric Marine Reptiles can make the transfer between Salt and Fresh Water

@DriftingStudent 6 месяцев назад

I cannot thank you enough for bringing people this content. Thanks for being awesome 🙏🏻

@BooTub3 7 месяцев назад

I LOVE your channel! Just found you guys today, more MORE!

@nosour107 7 месяцев назад

excellent video as always!

@Shx148 7 месяцев назад

Fresh water mosasaurus would definitely make me shit bricks. Lol

@NOOBTOOB587 7 месяцев назад

Thank you for the content you make. It helps me get through my troubles. My dad left to go get mental help because he was quick to anger. I just want him to come hone

@valentinfejes 7 месяцев назад

At 2:11 - it's my good friend's artwork, his name is Tibor Pecsics (you can see his name at the right bottom corner).

@ExtinctZoo 7 месяцев назад

Thank you! Added to description.

@valentinfejes 7 месяцев назад

@@ExtinctZoo Many thanks, much appreciated! ☺

@steven3517 6 месяцев назад

First time seeing this channel,subscribed!.

@Usernameisthree23_1 7 месяцев назад

I love your channel ❤❤

@revanius2213 7 месяцев назад

If half those creatures were alive today its possible Humanity would have never learned to swim and just avoided the water all together.

@ByTheStorm 7 месяцев назад

Similarly could be said about the terror birds or most of the ice age megafauna. But considering how many creatures were and are being wiped out in one way or another? Humanity could probably find a way to kill or eat them. If not? It dramatically shifts culture entirely. Sinocentric cultures would probably cast the Dragon in a far less benevolent light if there were serpentine like creatures swimming up rivers to kill early man. Much like how snakes evolved into a negative idea of dragons in the west. Water is just extremely essential to life and civilisation it would mean many unless they adopted more martial cultures and upbringing would likely always be at the mercy of these creatures. Then again? The Nile has hippos and alligators.

@peterweinmann3722 7 месяцев назад

Nicht unbedingt orcas und pottwale fressen auch keine Menschen obwohl sie es könnten.

@tm43977 7 месяцев назад

Prehistoric sea monsters

@ShowTimeTim 7 месяцев назад

I need more videos like this in my feed

@atticusleeds3957 7 месяцев назад

It's called a Paniniosaurus because that's what you would be to it.

@posticusmaximus1739 7 месяцев назад

Awesome!!!

@CambrianCole 5 месяцев назад

i love the paleoart you use!!!

@jessicooper8540 4 месяца назад

me to

@wogelson 7 месяцев назад

Ayo I'm calling Jeremy Wade

@deathhimself4676 6 месяцев назад

Great video.

@MrLolguy93 7 месяцев назад

Even Steve Irwin wouldn't want to be near it

@BBLeviathan-Gaming 7 месяцев назад

LIES!! He’d be one of the first to try to pet it

@thesagepilgrim4441 7 месяцев назад

Awesome

@ThrillerXero Месяц назад

They be finding competition with crocodiles 😂

@jackdarby2168 7 месяцев назад

River Monsters: Prehistoric Nightmares

@nunamacuna330 7 месяцев назад

I thank the algorithm for finding you

@toonrex2806 7 месяцев назад

8:10 unless you count Nessie and other aquatic cryptids.

@wintersakiller 7 месяцев назад

Jeremy Wade hyped rn

@pavlovsdogman 7 месяцев назад

Besides the Meg and the Lyvatin these guys were the scariest beasts to ever swim in water!

@riteshjadhav1382 7 месяцев назад

Can you make a video on megalania ? It was a monstrous monitor lizard from Australia

@des9930 7 месяцев назад

megalania isnt a valid genus anymore, its been reassigned to Veranus

@jointcerulean3350 7 месяцев назад

@des9930 It’s still valid to call varanus priscus megalania.

@des9930 7 месяцев назад

@@jointcerulean3350 ah my bad just thought I'd say it since I don't know if many know about the reassignment again my bad for not knowing that

@SpaceGTyrion528 7 месяцев назад

Cool video, but no one talks about how handsome this man's voice is

@heretyk_1337 7 месяцев назад

Hm. It would be lovely- if you'd make some video about fresh water sharks of prehistory- i have to say, that information for a casual fan of prehistory on that topic is rather hard to find

@Bandersnatch41 7 месяцев назад

The one thing we have yet to find is a flightless pterosaur. They had to have existed. We have flightless birds and even a flightless bat.

@lucasb9285 7 месяцев назад

If it flightless is not one…

@labangrankvist2993 7 месяцев назад

@@lucasb9285that's like saying a penguin isn't a bird.

@Sebastianator01 5 месяцев назад

⁠@@lucasb9285the dodo and I are rolling in it’s extinct grave after reading your comment

@bencejuhasz6459 7 месяцев назад

Greetings from Hungary! The picture at 2:11 was created by Tibor Pecsics,not by UA. You can see his signature in the lower right corner.

@Fruduz 3 месяца назад

0:51 what is this clip from? Would love to watch the full segment/episode/film

@tinytitanmc1276 5 месяцев назад

I HAVENT WATCHED THE VIDEO YET BUT THATS THE NAME OF A SHOW

@BrUh-nu6vz 7 месяцев назад

Please can someone tell me the spino vs mosa clip is just before a minute into the vid

@dario9793 7 месяцев назад

I hope some crazy scientific just clone a bunch of these monsters and release them into the rivers without anyone knowing

@ThrillerXero Месяц назад

River mosasaurs are underrated

@Firm-Tofu-King 2 месяца назад

So the plesiosaurus in the river in Turok was historically accurate. How quaint

@midgetydeath 7 месяцев назад

The long neck would be useful when approaching prey head-on as prey probably wouldn’t realize the head was far closer than the body.

@outinthesticks1035 7 месяцев назад

I would think a large , stocky body would make it hard to hunt , being hard to change directions. But add a long , flexible neck that can whip off in any direction would negate that disadvantage

@chronicanimosity1139 7 месяцев назад

Plot twist they adapted and still live in lake illiamna

@CancelHappiness 2 месяца назад

This is why I believe in cryptids. After all, the kangaroo began as a cryptid.

@danthewatcher9681 7 месяцев назад

imagine if Nessy was actually real and thus one of these guys :D

@JA-ru3il 5 месяцев назад

I don't see how you debate against it, it's completely possible there were or are prehistoric creatures still living within our timeline

@raphlvlogs271 7 месяцев назад

same reason why there are fresh water dolphins in the Amazon basin

@moonstonepearl21 7 месяцев назад

Those brawn and white stripped fish look like precursors to dolphins. They look like fish but have that dolphin shape.

@terrionrhodes7704 7 месяцев назад

Can you make a entire video of archeopteryx

@terrionrhodes7704 7 месяцев назад

Seeing how many subspecies of archaeopteryx are there because I heard it was two A lithographica A seimensii

@terrionrhodes7704 7 месяцев назад

And also I was wondering did archaeopteryx practice parental care because I saw a picture of a embryo from a archeopteryx lithographica

@watcher6286 7 месяцев назад

So basically was just another crocodile species until they actually know what it's limbs looked like.

@budjetriderz6858 7 месяцев назад

Titanoboa video coming?

@speemus6223 4 месяца назад

i thought it was bigger but aight its cool anyways

@Boglorio 7 месяцев назад

What is that spinosaurus getting mauled from?

@cosmiccryptid263 5 месяцев назад

If the fresh waters where the least affected by KT extinction then how come none of these large freshwater marine reptiles survived but the crocodiles and alligators did?

@PackHunter117 7 месяцев назад

If anyone plays Path of Titans it’s so much fun to play as a Mosasaur and swim upstream and fight Sachicasaurus and Sarcos in the river

@sharondornhoff7563 6 месяцев назад

Mosasaurs adapting to fresh water isn't that surprising, given that they're suspected to have evolved from either monitor lizards or limbed proto-snakes. Both varanids and snakes include multiple freshwater-swimming species.

@phoboskittym8500 2 месяца назад

Ogopogo, and the Loch Ness Monster....hmm??

@user-dk5vj2br1o 7 месяцев назад

Wait, are you saying that Nessie, Champ..n every other lake doesn't have a sea monster?!😂

@jac6548 7 месяцев назад

maybe the real monsters were the friends we made along the way

@SunnyIlha 3 месяца назад

Not sure about wanting to be around back then with river swimming carnivore Komodos. 😬

@arpadungvari7160 Месяц назад

Mossasaurus lived in Hungary??? Iam from Hungary, what the hell??? Hell yeah...

@hera7884 7 месяцев назад

Teeth started out as armored plating on ancient fish. Armored Plating on armored fish moved towards their mouth where they became extra useful, like dual utility. This is the origin of teeth

@joshispro345 5 месяцев назад

@user-qt3ku7ge3k 7 месяцев назад

I like pannoniasaurus

@hydrosharkjira 6 месяцев назад

Bruh a fully grown adult is smaller than an average adult whale shark!! Boy am I happy whale sharks are filter feeders

@aleccope1320 7 месяцев назад

Hey just letting you know RU-vid unsubscribed me from your channel. Not really sure why.

@kitchengun1175 7 месяцев назад

living in the kem kem environment must've been crazy Like At least 2 of the largest predators the world has ever seen sawfish that actually weren't tiny plesiosaurs a 7 foot coelocanth a (possibly) 3 meter lungfish 15+ meter croc with a very round nose giant pterosaurs sauropods halfway between brachiosaurs and true titanosaurs the whole works

@HassanMohamed-rm1cb 7 месяцев назад

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

@GWEN.HESAIDTHATYOUAREABLEANDIC 5 месяцев назад

Guess he got braces 😬 🤪

@yukiakito3083 7 месяцев назад

These guys went extinct After they found out their fate. To be dominated by Jeremy Wade

@JuaneDosesII-wj6dd 5 месяцев назад

Mabey they aren’t extinct

@ivanmax3595 2 месяца назад

as i understand, mollusks and fish are not animals

@maxamilliandavies7741 7 месяцев назад

3:43 does anyone know the name of the painting? Like comment if u reply so i can get notification pls

@jakeoreilly9627 7 месяцев назад

Yikes

@robwalsh9843 7 месяцев назад

Nessie was real, and dangerous

@SD_Chosen 7 месяцев назад

I Wouldn't be surprised if there was under the Sediment like The meg if that Is True and they may have something still in the deep earth 🌎

@timlopez643 7 месяцев назад

What if science has the plesiosaur backwards? Meaning it had a long tail and a short neck.

@sheena1521 7 месяцев назад

They have skeletons lol...

@ExtremeMadnessX 6 месяцев назад

Actually, when they find fossils for the first time, they think exactly that, it was wrong reconstruction.

@asha_vere 5 месяцев назад

Loser weirdos: I don't swim in the ocean! There's sharks in there!! Me: (After watching this video) It could be worse...

@pontiacmaniac7772 7 месяцев назад

We got Earth after the nerf. Kind of lame tbh

@nomobjustice 6 месяцев назад

Dude sounds like Jame Gumb

@a_fuckin_spacemarine7514 7 месяцев назад

People didn't what plesiosaurus looked like back in the 1800s......at least not from fossils, yet they got paintings of em? Im sure its a coincidence and not at all real, just a lucky guess.

@melanimatejak6821 7 месяцев назад

Plesiosaurus fossils were already known in 1800s and scientists had general idea how they looked like, although of course their knowledge didn't go into every detail.

@a_fuckin_spacemarine7514 7 месяцев назад

@@melanimatejak6821 evidence please

@melanimatejak6821 6 месяцев назад

@@a_fuckin_spacemarine7514 ever heard of Wikipedia? Or if you have time go to some large library and look for paleontology books dealing with sea reptiles. The central for those discoveres was 19. century England with its coastal cliffs which are regularly eroding and releasing plenty of fossilated bones.

@notoriousbigmoai1125 7 месяцев назад

> Making it the largest predator in the water (You mean freshwater?) I'm sorry, but this creature will no chance against Deinosuchus if they came across each other.

@grahamstrouse1165 7 месяцев назад

Wrong time & place.

@FlarryFlats 7 месяцев назад

Dude... are you pitching down your voice? 🤔

@midgetydeath 7 месяцев назад

The dinosaurs were so incredibly violent and aggressive that when the ecosystems destabilized even a little, numerous species would go extinct rapidly. The reproduction and violent death rapid cycle could not survive any imbalance. Not surprising eventually they were worn down to modern animals, which require far less energy and usually developed warning systems such as colors and threatening gestures and sounds to avoid unnecessary fights. Among other such adaptations such as being able to go long periods without food.

@pteraptosaurus 7 месяцев назад

What the fuck are you talking about??

@DireNemesis 7 месяцев назад

Whats amazing is that they too more than likely had warning systems. I think they were a lot more developed than we still think, seeing as nodosaurs had counter shading.

@GWEN.HESAIDTHATYOUAREABLEANDIC 5 месяцев назад

Male play2us. 😂

@VoItmann 5 месяцев назад

I dont believe in “evolution” but i find these video’s interesting

@novathehedgehog90 5 месяцев назад

These videos are key examples of it though

@VoItmann 5 месяцев назад

@@novathehedgehog90 in what way?

@novathehedgehog90 5 месяцев назад

@@VoItmannShowing adaption to living in a freshwater environment. Millions of years beforehand when early reptiles split into the two lineages that become dinosaurs and marine reptiles respectively. Another important one in this video is convergent evolution, animals getting the same body plan because of it's success. Ichthyosaurs aren't related to sharks or dolphins at all but look similar because it was an open ocean animal and was adapted for that life.