The Spinosaurus Had An Evil Twin...

Giant theropod, large sail, big bulky arms with giant claws, and is always debated about? Sounds like Spinosaurus right? WRONG! This is Oxalaia, the Spino's Brazilian Twin.
If you want more ExtinctZoo 🦖:
Facebook: / extinctzoo
Extra videos on our HeroHero: herohero.co/extinctzoo/join (check it out for free)
TikTok: / extinctzoo.official
Podcast: open.spotify.com/show/0KvuZJg...
0:00 Intro
0:50 Discovery & Naming
1:43 Size
2:33 Similarities/Differences With Spinosaurus
4:35 Sail Or No Sail?
5:23 Giant Jaw and Claws
5:57 A Fishy Diet (What It Ate)
7:01 A Dinosaur Killer Too?
8:14 How Well It Swam and Ran
9:21 Habitat
10:03 What It Lived Alongside
11:11 A Curious Extinction…
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.
Firesong by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. creativecommons.org/licenses/...
Source: incompetech.com/music/royalty-...
Artist: incompetech.com/

[@Chrismas815]

Man spinosaur fossils have bad luck not being destroyed in museums

[@selfiekroos1777]

Thank the german thieves

[@GenghisDon1970]

no kidding! Almost like a deity is seeking to make sure this secret will always remain in doubt

[@HeinrichJean-h8o]

Brazilians Lost both Fossils of Irritator and Oxalaia. Oxalaia was destroyed, and Irritator was stolen by Germans.

[@metal87power]

ALIENS

[@Firestar-TV]

Not getting destroyed in Museum Challenge: Impossible

[@lewycraft]

It is kind of ironic, that even their finding history is simmilar. Both got their only fossils destroyed shortly after discovering, due to destruction of the museum they were held in.

[@Robert53area]

True, the original fossils were both destroyed. But because of the original spino fossils destroyed it intrigued people to go find a full skeleton. This is how researchers found out more about spino as their was a whole market where it's fossils were being sold and finally a almost complete fossil found in morroco.

[@itpugil]

@@Robert53area amazing

[@MarineTeen]

It's almost like a curse because the whole reason why Irritator challengeri was given its name was because of the frustration the founders went through of its discovery.

[@Godzilla2000X]

I find that suspicious

[@Minerlover666]

What makes it evil though

[@rl9217]

If I had a nickel for every time spinosaur fossils stored in a museum were destroyed, I’d have two nickels. Which isn’t a lot, but it’s weird that it happened twice, right?

[@4124V4TA-SNPCA-x]

Lightning never strikes the same place twice... Unless you are the fossilized remains of a Spinosaurid.

[@o_o8203]

Aliens are trying to protect us from forbidden knowledge

[@ArielMurrayDrakonslayer777]

@@4124V4TA-SNPCA-xand the lightning is probably bombs

[@4124V4TA-SNPCA-x]

@@ArielMurrayDrakonslayer777 That can also be a kind of light. But when asking for some light you probably don't want an incendiary bomb or a Molotov thrown at you. 😁

[@ArielMurrayDrakonslayer777]

@@4124V4TA-SNPCA-x true da

[@mgg1244]

bro, they found two bones and were like: Yup it was a master fisherman, had a bite force 20x that of a wolf, went to college in 1982, and had a crush on his gym teacher.

[@sitafuller497]

LOL😂

[@franciscoxavier7398]

humm not buying the 20x bite force, how could they possibly know!

Wait til you find out about Quetzalcoatlus

[@IllustriousCrocoduck]

I'm not a palentologist or biologist, but I think it's reasonable to say that bite force is one of the ONLY things you CAN infer from just jaw fragments...

[@franciscoxavier7398]

@@IllustriousCrocoduck yeah but we're fooling around ;)

[@DeinosDinos]

Tragically analogous that Spinosaurus for the longest time was also known from very little fossil evidence. The holotype was destroyed by allied bombing during WW2. Wasn't until Paul Sereno much, much later that we got a better idea of what Spinosaurus was like. So if someone rich is watching or reading this, fund an expedition to the Alcantara formation!

[@khub5660]

They wouldn't get any money back. At all. Unless it's subsidized by a university

[@astralb.2647]

The burning of a museum of that size is just so unimaginably tragic for us nerds... we want answers damnit!

[@kentl7228]

I wonder if 3d scanning and ct scanning to solid models of rare fossils should be mandatory to prevent the complete loss of precious specimens to history.

[@silverthatrandomdragon5509]

This right here

[@Khan-rz8qi]

Spinosaurus: Hey twin!! Oxalaia: Yoo! 🤝🙏🤞

[@Intrusion498]

Spinosaurid fossils try not to be destroyed challenge difficulty:IMPOSSIBLE Edit:THE AMOUNT OF LIKES

[@siewpeisi9937]

Damn planes going bombs away

[@girlbuu9403]

The moral of the story is don't keep spinosaurid remains in your museum. This one caught fire, the Allies bombed Egyptius', are there any other instances of this? Fake Edit: I thumbed it down to help even things out. :)

[@siewpeisi9937]

@@Intrusion498 but also Malaysian spinosauradae even existing or not difficulty:negative infinity

[@frostbitetheannunakiiceind6574]

you ruined the comment with that likes edit. and it's not even that many, just 425

[@Intrusion498]

@@frostbitetheannunakiiceind6574 it’s more than I usually get

[@gustavoscalabrin5028]

I cried so hard of anger when the museum burned down. Unfortunately, Brazil and historical preservation and memory don't match well. Some improvements have been made, but very slowly

[@CeratsTheCrunch]

As a Brazilian,i can confirm the existence of these guys. I've seen them mostly in small,deep rivers. They get beautiful in the mating season. They seem to be scared of fire, don't know why tho.

[@unknown8844trig]

I'm more curious about the small deep river you mentioned..¿

[@Raphus_2001]

was that before you tended to your extremely venomous snake collection?

[@christines.5241]

Or maybe some of those magic plants potions and smokes ...

[@CeratsTheCrunch]

@@christines.5241 i don't know why You guys doubt my sanity. Aside from my dementia,autism and schizophrenia i am perfectly healthy.

[@md.mazedulhaquerefat8585]

​@@CeratsTheCrunchI am so sorry. People are too rude and judgemental nowadays.

[@MrPapamaci88]

Spinosaurids in my opinion were a mix between a crocodilian and a grizzly bear. Fisher or not, that's a terrifying combo!

[@maulikosuri8255]

Both eat fish so they would be adapted well to eat fish and would be big and strong

[@NM-ue8on]

Spinosaur fossils trying to not get destroyed challange : impossible

[@bossturner9540]

Lmao bros trying to like farm

[@veggieboyultimate]

Oxalaia and Sigilmassasaurus are very enigmatic dinosaurs, was it a new species, or just another Spinosaurus?

[@colekesten9596]

If the Jurassic franchise ever wanted to have a paleo-accurate spinosaurid they could introduce the oxalaia

[@GenghisDon1970]

great stuff, love the art you showcased

[@riddick7082]

How do they know Oxalaia was pretty much a Spinosaurus twin? The only fossils that have been found of Oxalaia are part of an upper jaw and some smaller parts of the snout.

[@sitafuller497]

Because its skeleton was almost the exact same. But I still don't understand why they thought it had a sail like Spino.

[@xergiok2322]

@@sitafuller497 Infered from the assumption of it being closely related to spinosaurus.

[@sagittariusneptune9330]

Thank you for mentioning this guy, I've seen it soo many times in paleo books but always wanted to see it in a documentary someday.

[@NewDealChief]

Ooh boy, another Extinct Zoo banger.

[@adriannegrete9586]

Every Saturdays.

[@oneshotme]

I very much enjoyed your video and I gave it a Thumbs Up

[@AxelTherion]

Random tip, the x is pronnounced as "sh" like, oshalaia! Great video mate!

[@jamesthelass6331]

I would have thought it would be an "h" sound like in Oaxaca or Mexico, but it makes sense that it's "sh" because Portuguese.

[@thelittleal1212]

What an odd coincidence that I’ve just published a stopmotion video on oxalaia today as well😅

[@sitafuller497]

Very good stop motion, I seen it!

[@thelittleal1212]

@@sitafuller497 thx

[@BinroWasRight]

This was an amazing watch. Among all dinosaurs, the spinosaurids are my favorites (I can so very much relate to being the odd and ungainly one with different abilities than most, heh) and now Oxalaia is a star in that constellation for me. So thanks!

[@PrehistoricMagazine]

Great video sometimes I wonder if the same type of Dino’s were wondering around Brazil roughly 95mya meaning another spino, a similar carcharodontosaurus etc. Mike

[@Anonymous-ul4xt]

Oxalaia could be a subspecies of spinosaurus due to the small evolutionary differences like the sale and more tightly packed teeth and a straighter snout 3:51 my theory is that oxalaia and spinosaurus had a very close ancestor but split off very recently so one is more suited for a semi-aquatic/hippo life style and oxalaia is somewhat more of a land based spinosaurid with it’s more straightened snout or it hunted like spinosaurus and eating fish but that’s just my theory

[@Cainb23]

you should consider doing a video looking at the dinos in the game Ark and seeing how close they are to realistic . i know everyone in our game's community would LOVE it :-)

[@raudhbansi2887]

Nice video

[@OX_3102]

SOMEONE HAS FINALLY GIVEN ME ATTENTION!!!!!!!

[@rabbitwars001]

Ayyyy

[@dredhead117]

"Babe, wake up. Extinct Zoo just dropped another video, and this one's about Spinosaurids!"

[@builderdog3875]

_KZbinr simulator bot_ comment

[@xergiok2322]

What's the punch line?

[@victorevaristo8494]

I am from Brazil and i love spinosaurs. My favorite spinosaur of my country is irritator.

[@gabriel-bl4ckh4wk-6]

Another awesome video ! Please tell me where I can find the image in 2:19

[@kevinquinonez838]

The first Spinosaurus fossils found: got blown up when a bomb fell on the museum during World War II The first Oxalaia fossils found: got burn down when the museum caught fire

[@sethnaffziger1402]

i think Baryonix is my favorite dino in that family (pretty sure Barry is a spinosauridae) When I was little I had a toy for him and it's name is cool! He's missing his sail but the midweight version is certainly a terror in its own right

[@LucyLucy69]

they probably moved along the bottom of a body of water similar to modern day hippos explaining its heavy bone structure

[@joaovitorrabelllo9523]

well,i am from brasil,more especifically from rio,where the museum caught fire in 2018,feeling represented

[@stevenfunderburg1623]

Thank you, Extinct Zoo, for making sure we understood that the creature in the thumbnail did not represent an photograph of a living Spinosaurus ! That was close, man! Dude, I was so captivated, initially,by what I thought to be photographic evidence for the discovery of an extant example of that species, and just before the first tear of horrified wonder could drop from my astounded eyes, I saw the caption. Whheeeeewwww! Can you imagine my relief! There was absolutely zero sarcasm in the preceding remark👍

[@Darkgeran7]

10:19 cursed but besides that I have always been curious about this spinosaurid thanks for making this

[@solowingborders3239]

Fate has it out for Palaeontologists regarding Spinosaur fossils.

[@liltaytjakid26]

This channel so dope. Never knew about this dinosaur

[@trezor-yt3047]

Hey extinctzoo just a question why are you starting to delete some of your older videos now?

[@tadecker82]

Considering the sheer size of fossilized fish found in the same period, in areas where shallow seas existed, it's really no surprise that there were a number of large Spinosaurids. If 4' - 8' fish were somewhat commonplace, a Spino could wade in shallow water all day (much like a modern Gharial crocodile), and snatch fish.

[@rlycervano8934]

Everytime that this kind of fossils gets found, it will be destroyed Man, i think that is a canon event & there's no way for us to change it

[@barryauguste9734]

Fascinating!

[@natthekiwi7074]

I imagine that due to its general body shape and weight distribution plus the nose location, it spent a ton of the time in water and probably ate a lot of fish. Due to the legs being awkwardly placed in relation to its body weight distribution, I can’t imagine it was doing a ton of land travel. That being said it could definitely get a decent speed if it needed to charge at something so I imagine it was like a much more adept alligator. Imagine an alligator that could actually be extremely adept on land! Terrifying

[@aby110]

Spinosaurids are so majestic

[@andrewstrongman305]

The simplest explanation is that the Spinosaurus parent species was present when South America and Africa split apart. It's recreation with a sail is a perhaps a stretch though as only 2 other species featured large ventral structures.

[@frankiek_1]

2:28 I would argue that Carcharodontosaurus would’ve been the apex predator of Northern Africa rather than Spinosaurus but that’s just my opinion. Being longer and possibly heavier does not necessarily mean it would be the apex predator of its environment. For example Allosaurus is pretty universally considered to be the apex predator of the Morrison Formation despite being smaller than Saurophaganax and Torvosaurus (though to be fair Allosaurus is far more common than them). Diet likely plays a role in food web hierarchy because a Spinosaurus is clearly evolved to take on aquatic prey but probably would not be above taking on smaller terrestrial animals but certainly nothing as large as itself. Carcharodontosaurus on the other hand being a large Allosauroid likely feeds on anything it can get like ornithopods, smaller theropods, young sauropods, and even large old or sick sauropods through mobbing/pack hunting behavior similar to what is theorized for Mapusaurus

[@renanotoch668]

Fortaleza mentioned!! 🇧🇷🫡

[@MatheusCayresdeMello]

James Gurney art is gold!

[@Tyrannosauroidea]

I think we should classify it as Spinosaurus quimbensis because it resembles Spinosaurus Aegypticus a lot even though they live in different continents but like Panthers and lions live in different places but are still considered to be in the genus panthera even though their mouths are different most species in the same genus of corse has different features

[@HollowEarthBuddies]

3:17 all imma say is THAT angle from THAT pose git me feelin like imma do smthn to that spino

[@ikabajif8157]

What the fk lol

[@Meme-penguin69]

Extinct zoo will you ever do science videos of movie dinosaurs?

[@sitafuller497]

Movie dinosaurs aint real how can bro research them? The only thing he can research about them is their behavior shown on screen. So that video would be very useless.

[@TheWarchiefZekeJaeger]

I remember like yesterday when they found him. I quickly ran to the museum to see the bones, I was 12 and I lived in the capital of that state (São Luís), not very long they made a event with many things, and one of them was him in full size (bones only), but of course it was based on the old Spino body (the JP3 body type). Now a sad fact: The museum where his bones were, was hardly a museum, the museum it's located in the "historical" part of the capital, and was pretty much a room with some fossils and some paintings (one of them was Oxalaia), I bet the living room of some of you is bigger than the museum. A fun fact: His name comes from a Deity from Africa, and alot of the culture of Maranhão shares from Africa.

[@eliletts8149]

Dang, I have never heard of this dinosaur until I watched this video!

[@cdkw2]

nice!!

[@MikoLanthierFrechette]

Oxalaia is literally the spinosaurus's own equivalent of the tarbosaurus, cause they both look very similar (besides some differences), Spinosaurus is larger than Oxalaia, they both live in different continents that used to make Gondwana (Like NA and Asia (exluding indian subcontinent) that used to make Laurasia), Oxalaia was considered a synonym of spinosaurus (like Tarbosaurus was just another species of the genus tyrannosaurus) and occupied the same niche.

[@Deadfishyboi]

It reminds me a lot of modern crocodiles. Being opportunistic hunter and being primarily aquatic but also hunting on land

[@Marrow175]

Spinosaurus: bombed Oxalaia: burned Irritator: stolen

[@zipperstriker]

Wish I could time travel to see this magnificent creatures 😍

[@Forewarned76]

I love that there's a dino called Irritator

[@znail4675]

Another use or benefit for the sail that I rarely see mentioned involves hunting fish. There are other ways to hunt fish then pursuit hunting and one such way is to use reach or bursts of speed to ambush prey and is used by both fish and crocodilians today. Reach can be accomplished by making a U-shape of the body towards one side. This will give a quick and long reach attack that can catch prey unawares of them being in danger. The sail would help with this tactic as it would act as a stop to prevent the center of the U to move in other direction too much. The main thing is that I can't imagine an animal group this successful and spread out with this many aquatic adaptations not being able to hunt in the water.

[@redsonic2265]

Can we have a video on all the spinosurid family

[@jessehutchings]

I'm sure a fish and small animals diet was probably one of the best food niches in this era. Full of energy and vitamins

[@franciscoxavier7398]

I'm sure you're a fish as well xD

[@vasilijrappana2335]

I am starting to think that spinosaurid bones are cursed, since every museum they are brought into gets destroyed.

[@eliscanfield3913]

that fire must've been devastating to so many, even if no living being was hurt. there weren't any casts sent to other museums?

[@niharg2011]

I thought this was about Sigilmassasaurus, Although yeah Oxalaia content is welcome too. explains why this guy wasn't anywhere to be seen when I was doing school projects, It was discovered in 2011... I graduated from School in 2013...

[@jacobthompson3673]

One of the most iconic and as well as the most confusing dinosaur to science. 😂

[@MysteryDryo]

Spinosaurus after Oxalaia's fossils were destroyed: My true successor

[@elizabethbirnie6662]

Irrigator by like Damm I thought it was gonna by me.

[@mt_baldwin]

It's like the universe doesn't want us to know too much about these kind of dinosaurs.

[@meucantogames6952]

"Alcântara" please take your time to stress the "â" with a more grave pitch. You can also complete the "tara" in a single breath almost as if it was a single syllaba. The way you spelled sound more like "Alcantára" what is funny but it's like spelling "bear" while asking for a "beer" in a pub. Nice video by the way.

[@dragonpjb]

This is why research casts are important.

[@ICKYJOGGERYT]

The only way I actually figured out that Oxalaia existed was because of the ARK mod called Additional Creatures 2: Wild Ark 😅

[@borntowild480]

Isn't it an irony that both large spinosaurus' fossils are lost.

[@RealAaron317]

where did you get all this info from lol

[@Kargoneth]

The skeletons of these relatives look so similar to my eyes. I wonder how distinct their colourations and fleshy bits would be.

[@countchompula1896]

I wish someone would do Sauroposeidon, its 2 little bros Brachiosaurus and Giraffititan get all the attention. 🦕

[@gg_sam7847]

I swear the Spinosaurids all have just the WORST luck when it comes to fossil survivability

[@bsnhbksan]

Damn, I remember a time, way back when, when the no.2 was Allosaurus

[@khaiasaurus2595]

Was half expecting a spinofaarus video 🤦🏾🤦🏾

[@User69Bgameover799]

Oxalia be a prehistoric spino crocodile 💀

[@GuiAntonioli]

It's widely known here in Brazil not only they existed, but they never really went extinct. They evolved and adapted. Nowadays they are way smaller and are called "chupacabras", a common pet to us Brazilians.

[@maisamzeiad1421]

Short answer: it's oxalaia

[@adriannegrete9586]

Factor Trace made a video to explain about Spinosaurids and includes Oxalaia, 3 months ago. He says Oxalaia was the largest South American theropod known to science.

[@gigachadgoose]

Extinct zoo, how many more things have we gotten wrong about the spinosaurus

[@fauresfaures4314]

we changin the thumbnail with this one 🔥🔥🔊🔊

[@tm43977]

Oxalaia a Brazilian spino and An impressive Dinosaur

[@shadowarez1337]

So these were basically walking Alligators / Crocodiles but much scarier cant imagine coming up on these with stone spears 😱

[@adawnicusautocon]

Haha, shows that you know! I already knew about Oxalia 😌🙂‍↕️

[@user-um1xo9ed1x]

So looking at that creature, how does it not fall flat on its face when walking in the manner depicted in the video? I mean its body seems to have the same thickness from hip to chest. Its forelimbs appear to be almost the same size as its hindlimbs in thickness and density. Its tail does not appear to quite have the counter mass to balance it on its hips. And that head is enormous and must have been quite the weight on its own. By comparison with Tyrannosaurs where the forelimbs are significantly smaller and the chest tapers in from the hips this creature seems to be defying gravity and a centre of balance to achieve the posture depicted.

[@tigana]

Oml don't tell me we're about to have another Nanotyrannus vs baby T. Rex debate between these two💀

[@Famousfire97]

If i had a time machine there is one thing i want to do more then anything, and that is going back and getting a real look at what a spino acually looked like. So if a time traveler comes across this, help us out bud.

[@titolino73]

In 2018? I MEAN what they were thinking that they would make raining? Unbelievable loss!

[@TheMopomi]

Oh look a snouth! I bet this creature has a sail!

[@matheusfaustino1769]

BRASIL MENTIONED🗣️🇧🇷

[@ryokajimosensei2780]

The Spinosaurus Rabbit hole deepens

[@BufferThunder]

Babe! New Dinosaur just dropped!

[@Bugdawg-w3t]

new dinosaurs before gta 6

[@steveshoemaker6347]

THANK YOU....

[@truth09]

The evil spinosaurus brother. His name is Sam.

[@afrinaut3094]

I think its interesting that the Spino found in South-America is named after an African deity, but not the Spino found in Africa. The Spino found in Brazil could have been named after Indigenous Americans of Brazil. Though I understand why, AfoBrazilians ARE Brazil's dominant culture. But its fine. With that said, Obatala is a sex/gender fluid Orisha, an Irunmole to be exact, a type of deity of the Yoruba people of west-Africa. Obatala along with Yemonja-a female Irunmole, are the duo that are responsible for creating the first human-bodies as commanded by the God of the Yoruba people Olodumare aka Olorun-who is sexless/genderless.