Tyrannosaurus vs Spinosaurus

 

This is probably the question that all Paleontologists get asked at some point. Who would win in a fight between Tyrannosaurus Rex and Spinosaurus.

T-Rex and Spinosaurus were among the two most ferocious predators ever to live on the planet. Both were the undisputed kings of the world’s they lived in, but sadly both lived many millions of years and several continents apart from each other and thus we will never know for sure who would win in a fight.

Still in this article I will be taking a look at all of the monsters strengths and weaknesses and try and decide who would be more likely to win in a death match between these two kings of the Dinosaur world.

This article will try and look at things in a fair and balanced way. I freely admit I am more of a T-Rex fan than a Spinosaurus fan, but still this will be looking at cold hard facts and determining who would have a better chance of killing the other.

The Tyrant

VS

The Pharoh

First up lets take a look at both beasts.

Tyrannosaurus Rex is by far and away the most famous Dinosaur. It was also among the last Dinosaurs to have ever existed. It lived at the tail end of the Cretaceous period 65 million years ago.

For over 90 years it was believed to be the largest land based predator of all time, but we now know that there were three meat eating Dinosaurs bigger than it, Giganotosaurus, Carcharodontosaurus and finally Spinosaurus itself now thought to be the biggest.

Still Tyrannosaurus Rex was the largest predator in its environment. It was over 40 feet long, 18 feet tall at the hips and could weigh anywhere between 9 long tons and 21 short tons.

It would have preyed upon Hadrosaurs, Ceratopsians and sauropods such as Edmontosaurus, Triceratops and Alamosaurus.

Whilst T-Rex may no longer be considered the largest land based predator in terms of raw power it is still utterly unrivalled.

It had the strongest bite force of possibly any animal ever to live on the planet.

In 2005 the  BBC documentary the Truth About Killer Dinosaurs built a reconstruction of a T-Rex head called Steely Dan.  Steely Dan revealed a number of interesting things about the power of a Tyrannosaurus.

First of all its bite was believed to have been a little over 4 tonnes. This would have given T- Rex a stronger bite than any animal alive today and a stronger bite than any other meat eating dinosaur (including Spinosaurus). With a bite of 4 tons Tyrannosaurus could have easily crushed a small car in its mouth no problem, it also would have been able to rip off more than 500 pounds of flesh in one bite.

T-Rex could fit a whole lion in its mouth easy!

Furthermore due to having such a powerful bite Tyrannosaurus Rex’s entire skeleton would have been stronger than reinforced steel and that’s just its skeleton, think how powerful it would have been when you add the muscles and thick skin over that!

Whilst this documentary was ground breaking at the time in the ten plus years since further studies have been conducted and it is now accepted that Tyrannosaurus Rex actually would have had a bite force of over 9 tons well over twice that of Steely Dan’s.

Other studies meanwhile by Gregory M Erikson who worked on both Steely Dan and the Dino’s vs Mammal’s series as well as by Mason B Meers showed that Tyrannosaurus would have had a bite force exceeding 23 tons.

If this estimate were true then it means Tyrannosaurus would have had the strongest bite force of any animal ever to live on the.earth.

The Megalodon shark has a bit force of just over 20 tons, Deinosuchus a prehistoric crocodile had a bite force of just over 11 tons, Spinosaurus’s bite force was over three tones, a Great White Shark’s is 1 ton, and a Tiger which has the largest bite of any land mammalian carnivore has a bite force of just over half a ton.

Thus T-Rex could bite over twice as hard as Deinosuchus, 8 times as hard as Spinosaurus and close to 50 times as hard as a tiger.

As if that wasn’t enough Tyrannosuarus’s teeth were also designed in such a way that if its prey tried to escape the little meat hooks on the inside of every tooth would pull more and more meat from its victims into its throat. The hooks on its teeth would also have caused meat to become stuck between them which would have meant that bacteria from the rotting meat in its mouth would have built up and effectively given it a poison bite.

If the force of Tyrannosaur bite didn’t kill its victim, or the blood loss from losing over 500 pounds of flesh didn’t kill them, then the poison from its mouth would have killed them in a very nasty, painful and disgusting way over a short space of time.

Tyrannosaurus could also lift a tremendous amount of weight off of the ground in its jaws too. Close to 5 tons which is about the weight of an African Elephant.

T-Rex’s were incredibly durable animals too. Tyrannosaurus skeletons have been shown to have healed from gruesome injuries that would have killed other animals such as a broken neck, bite marks from other Tyrannosaurus’s in their brain case, scratches from Triceratops horns, and whacks from Anklyosaur clubs (which could swing with a force of over 4 tonnes.)

Finally as if that wasn’t enough Tyrannosaurus Rex also was a highly intelligent animal, at least by Dinosaur standards. It was the most intelligent giant Dinosaur and its intelligence was most likely greater than that of Alligators and Crocodiles. Alligators and Crocodiles are more intelligent than some species of cats and dogs. Thus if you were brave enough you could even teach a T-Rex tricks!

Some experts believe that Tyrannosaurus Rex’s intelligence was greater than that of a Lion’s too.

A T-Rex couldn’t have hugged you as its arms were too small, but it could have loved you just as much.

T-Rex’s larger brain would have allowed its senses to be much more refined and advanced too. Its sense of vision was particularly strong and its sense of smell was according to Bob Bakker one of the worlds leading experts on Dinosaurs comparable to 100 blood hounds.

Spinosaurus meanwhile was a relatively obscure Dinosaur for decades until it shot to fame when it starred in Jurassic Park 3 in 2001.

Spinosaurus was the largest land based predator ever to live on the planet, though this was not conformed until 2006. Spinosaurus could reach a length of 59 feet long and weigh anywhere between 7 and 23 tons. It was also roughly about 20 feet tall at the hips.

Spinosaurus lived during the early to middle Cretaceous period 112 to 97 million years ago.

It was the apex predator in its environment though there is some evidence that it came into conflict with another giant meat eating dinosaur named Carcharodontosaurus which was larger than T-Rex. One Spinosaurus specimen had the bite mark of a Carcharodontosaurus on its sail.

Spinosaurus would have preyed on other large Dinosaurs, but there is evidence that its diet consisted of mostly marine life. It was a semi aquatic animal that spent a good deal of its time in the water. Don’t think this makes it any less impressive a hunter as the marine life it preyed on would have included massive predators far larger and stronger than the Great White Shark or the Giant Squid!

Spinosaurus’s teeth were better designed for gripping long slippery prey which is why they were thinner than the robust teeth of Tyrannosaurus Rex.

Spinosaurus had a considerably smaller bite than Tyrannosaurus at just 3 tons. Though that is still far greater than any animal alive today and would have been powerful enough to bite through a car door or bite a human being in half. Its still quite small for an animal of that size.

Spinosaurus also was not as intelligent as Tyrannosaurus or as fast.

Where it did have an advantage over Tyrannosaurus however aside from its greater size was in the massive claws on its arms.

Now we all know about Tyrannosaurus Rex’s little arms. They’ve been the punch line of many jokes and meme’s over the years. In reality those little arms were still surprisingly strong, and as we have seen Tyrannosaurus really wouldn’t have needed them due to its powerful bite.

Still just as T-Rex didn’t need big arms Spinosaurus it can be argued didn’t need a colossal bite either.

The claws on its fingers were as massive as the meat hooks you’d find in a slaughter house. The beast could also swing its arms with a force of over 6 tons.

This would have meant that being hit by the Spino’s claws would have been like getting hit by 3 cars (your average car weighs 2 tons) with massive meat hooks from a slaughter house on the front at a tremendous speed.

That would most certainly be enough to pierce the hide of a Tyrannosaurus Rex no problem.

So then which would win in a one on one fight? Well there are many factors to take into consideration.

Chief among them is the environment. If the two beasts are out in the wild well then it really could go either way.

There are so many things that could tip it in the other animals favour out in the wild. To start with one of the animals may be sick or old, or one may be alone going against a pack. Also it depends on where they are fighting.

If its in the jungle Tyrannosaurus is going to have the advantage. Not only will it be more familiar with the environment but it will also be more manoeuvrable too. Its also faster on the land and its not hindered by that big sail. Down by the water however Spino obviously has the clear advantage. In the water its faster, it can strike like lightening. It could easily leap out and grab a Tyrannosaurus and pull it into the water where the Rex would be helpless in no time.

Really trying to say who would win in a fight between Tyrannosaurus and Spinosaurus in the wild is like saying who would win in a fight between a Crocodile and a Lion.

Sometimes the Croc will win, sometimes the lion will kill the Croc for various reasons. You can never say who will win for sure.

If Tyrannosaurus and Spinosaurus did get brought back from extinction either through cloning or time travel and were forced to live on the same island then they most likely would never bother each other. Large carnivores like Crocodiles and Lions generally give each other a wide berth as a fight with another large predator could end very badly for them even if they win.

A Lion might kill a Crocodile, but the Croc could still break its leg in the fight in which case the Lion is fucked. It wont be able to hunt, fight off other Lions to defend its territory, it eventually won’t even be able to fight off a pack of Hyena’s.

Thus unless they are desperate most large predators will instead hunt herbivore’s who aren’t as big a threat to them.

Tyrannosaurus and Spinosaurus would most likely be the same. Rather than risk losing an eye or breaking a leg trying to take down the other big guy on the block, they’d probably have much rather gone after a helpless, hapless Hadrosaur.

So bearing this in mind a fight in the wild between Tyrannosaurus and Spinosaurus if they ever did live in the same habitat would be a very rare thing indeed and if ever it did happen it would be impossible to predict the outcome due to so many outside factors. Both have a good chance of killing the other that much is true, but things like the age of the Dinosaurs, whether they were alone or even where they were fighting would all have to be taken into account.

Thus I’d give Tyrannosaurus and Spinosaurus a 50/50 chance of killing each other in the wild.

What about in more controlled circumstances however?

Lets imagine its an alternate universe where the Dinosaurs were never driven to extinction.

Trodon’s, small intelligent meat eating Dinosaurs evolved into intelligent humanoids, Dinosauroids.

Believe it or not Richard Dawkins has said that this could have happened.

The Dinosauroids develop an advanced society like us and just as we used to capture Lions and Tigers and pit them against each other in death matches to see who was the king of the Jungle well then lets imagine the Dinosauroids start capturing Spinosaurus and Tyrannosaurus and start pitting them against each other in order to see who is the king of the beasts.

This is a fair fight two young, healthy males, in an arena that is a completely neutral environment. No jungle, no water, both are land animals (even if Spinosaurus spent a lot of time in the water) both are hungry, have no way of escape. Who wins this fight?

Well once again we have to take certain factors into account.

How big are the Tyrannosaurus and the Spinosaurus for instance?

If its a twenty three ton Spinosaurus against a 9 ton Tyrannosaurus then forget it. Its a curb stomp in favour of Spinosaurus. The size difference between the animals in that scenario is too big. Yes a 9 ton Tyrannosaurus would still have a bigger bite than a Spinosaurus, but sadly that wouldn’t do it any good.

Plenty of predators with massive bites are still killed by predators larger than they are.

Take a look at Lions vs Hyena’s or Killer Whales vs Great White Sharks. The White Shark and the Hyena have bigger bites than the Lion and the Killer Whale but they still always lose in one on one fights because the other predator is just too big to mess with.

The size difference between a 23 ton Spinosaurus and a 9 tone Tyrannosaurus is not quite the same as that between a Shark and a Whale but the Spino is still close to 3 times heavier than the Rex and thus I’d expect a similar result.

Still this is not exactly a fair fight. Taking the highest estimate for Spinosaurus and pitting it against the lowest for Tyrannosaurus. Remember that Tyrannosaurus was said to have gotten to 21 short tons in which case there is only a two ton difference between them.

Also remember that whilst most experts agree that Spinosaurus was longer than Tyrannosaurus many believe that it was not as heavy as it had a considerably lighter build and frame.

So with this in mind if we did have a Tyrannosaurus that was heaver even just by a ton against a Spinosaurus then I think it would be a curb stomp in favour of the Tyrannosaurus. Spino’s biggest advantage is its superior weight, and without that then Tyrannosaurus is its superior in every way. Faster, smarter, stronger, Spino is sadly outclassed and an angry bull Rex could rip it limb from limb. The same applies for two specimens the same size.

In order for this to be a fair fight for both lets have a 21 ton Tyrannosaurus go up against a 23 ton Spinosaurus or a 7 ton Tyrannosaurus go up against 9 ton Spinosaurus.

Lets also say that this is a two legged Spinosaurus. Some experts believe that Spinosaurus was a four legged animal, though there is not conclusive evidence for this. A four legged Spinosaurus would be at a real height disadvantage against a Tyrannosaurus. Its neck would be right open to a more fleet footed in comparison Tyrannosaurus and whilst it could rear up to use its claws it would be too awkward to use them against a Tyrannosaurus as those who believe Spinosaurus was a four legged animal believe that on land the creature would have been clumsy as its legs were small. Really I think this would be another fight that would be overwhelmingly in favour of Tyrannosaurus.

So lets make this fight between a two legged 59 foot long Spinosaurus that weighs 23 tons and a 42 foot long Tyrannosaurus that weighs about 21 tons.

Who wins this fight?

Well again I’d give this to Tyrannosaurus Rex. It wouldn’t be a curb stomp. I’d say Tyrannosaurus would win 60 percent of the time.

Fact is as ferocious as Spinosaurus is, its simply outclassed in too many ways by old Rexy.

To start with T-Rex is faster which is very important in a fight. Also T-Rex is smarter. Now you might not think that matters with two animals but it does. For instance in fights between Lions and Tigers, the Tigers greater intelligence is a huge advantage as the Tiger is smart enough to rear on its back legs unlike the Lion who only strikes with one paw. Thus the Tiger can strike the Lion in the face with both paws and overwhelm it. Likewise killer whales when fighting Great Whites will often flip them on their belly and hold them there until they pass out.

Whose to say in a similar confrontation Tyrannosaurus wouldn’t be able to figure out any weaknesses Spinosaurus had? It certainly would be more likely too than Spinosaurus.

Also in terms of weapons Tyrannosaurus has the advantage. To start with its jaws are much more deadly than Spinosaurus claws and it can use them a lot more easily.

When the two animals faced one another Tyrannosaurus could reach out and bite Spinosaurus on the neck much more easily than Spino could use its claws.

When the two predators faced the weapons they would both be more likely to use would bee their jaws. Spinosaurus’s arms would have been too short to reach out and grab the Tyrannosaurus. Its not like King Kong whose arms can reach out and hold the Tyrannosaur at bay before it can bite him.

See how Kongs arms are useful weapons because they are long. Spino’s though bigger than Tyrannosaurus’s could not reach out past its face.

So if Tyrannosaurus and Spinosaurus faced each other then they would rely on their jaws, as in order to use its claws then Spinosaurus would have to get too near to Tyrannosaurus and leave itself open to a bite.

In a biting match well its obvious who’s going to win isn’t it? Tyrannosaurus Rex’s were known to bite each other in the face regularly and since their bites were possibly almost 8 times that of a Spinosaurus then its safe to say T. Rex could take a bite from a Spinosaurus to the face whilst Spinosaurus most certainly could not take a bite from a Tyrannosaurus.

All Tyrannosaurus would need would be one bite and the Spinosaurus would be finished. If it bit it on the neck it would crush the bones in its neck effortlessly. Even the lowest estimates of a Tyrannosaurus bite which are now thought to be inaccurate could crush an entire car and rip off over 500 pounds of flesh. Thus a Spinosaurus’s neck would be no problem whatsoever.

Even if Tyrannosaurus bit it on the arm it would have been strong enough to rip the animals entire arm off. Even if it just bit it on the side then it would have ripped off 500 pounds of flesh in one bite and the wound would have become infected too.

The fact that Tyrannosaurus Rex was faster and had better vision would have given it a much better chance of striking a deadly blow against the Spinosaurus.

Spinosaurus’s claws though deadly weapons could not have killed Tyrannosaurus instantly. I think it would need a few slashes to bring it down. Remember Tyrannosaurus’s are animals that could withstand injuries like a bite to the brain case or a broken neck so it would take  a while for Spinosaurus’s claws which would be very difficult for it to use anyway to bring the Rex down.

Spinosaurus also could not use its claws to twist Tyrannosaurus’s neck like in Jurassic Park 3 as Spinosaurus’s hands could only face each other as though they were clapping. If they tried to bend round then they would have broken, the same is also true of other meat eating dinosaurs such as Tyrannosaurus itself.

This would not have been possible without Spinosaurus breaking both of its hands. Thus all it could use its claws for would be to slash Tyrannosaurus from side to side across the face.

I could see Spinosaurus kill Tyrannosaurus two different ways in this scenario. It could quickly ram Tyrannosaurus and knock the monster off its feet which its superior weight would allow it to do. When Tyrannosaurus was on the floor it would be easier for Spinosaurus to slash at Tyrannosaurus with its claws. Provided it went for the Rex’s throat it could get a quick kill if it cut its jugular.

Another scenario where Spinosaurus could win against the Rex would be if it bit it on the neck and pulled it towards its arms which its superior body mass might allow it to do. It would then uses its claws to repeatedly slash at Tyrannosaurus’s face and its eyes over and over again until the pain and blood loss weakened Tyrannosaurus to the point where it couldn’t fight back.

Whilst it most certainly would be possible for the Spinosaurus to kill the Tyrannosaurus these ways, at the same time Spinosaurus would be putting itself in danger. When Tyrannosaurus fell on the ground and Spinosaurus tried to slash it Tyrannosaurus could reach up and bite its arm crushing it. Or similarly when Spinosaurus bit Tyrannosaurus by the neck T. Rex could reach up and bit it on the neck in which case once again it would be over for the Spinosaurus or it could bite at its arms too.

Tyrannosaurus on the other hand I can see winning more easily. The two would face each other and charge at each other instinctively using their jaws, Tyrannosaurus who is a lot faster would be able to dodge it a lot more easily and then strike at the Spino’s neck. One bite would either kill it or disable it so much that it would be too weak to fight and then a few more bites from T-Rex would enough to finish the Spinosaurus.

Thus whilst the Spino could certainly kill T.Rex then I simply see T. Rex being able to kill the Spino much more easily and therefore I am going to have say that Tyrannosaurus would be the more likely winner.

So then in conclusion as to who would win in a fight with Tyrannosaurus and Spinosaurus well I see it like this

In the wild Tyrannosaurus and Spinosaurus would have a 50/50 chance of killing each other.

In a Dinosauroid arena match however

23 ton Spinosaurus vs 9 ton Tyrannosaurus 100 percent in favour of the Spinosaurus.

Tyrannosaurus that is slightly heavier or the same size in weight as Spinosaurus 80 percent in favour of the Tyrannosaurus.

4 legged 23 ton Spinosaurus against a 21 ton Tyrannosaurus 70 percent in favour of the Tyrannosaurus.

21 ton Tyrannosaurus against a 23 ton Spinosaurus 60 percent in favour of the Tyrannosaurus.

Thus the Tyrannosaurus wins in more scenario’s but Spinosaurus is a worthy foe at least and it would most certainly be capable of killing a T. Rex and hey the only time that I feel there would ever be an absolute 100 percent chance of one animal killing the other would be in Spinosaurus’s favour.

Ultimately however Tyrannosaurus I simply feel at the end of the day was a superior predator and thus in most scenario’s would kill its rival.

 

 

 

2 thoughts on “Tyrannosaurus vs Spinosaurus

  1. Fucking fanboy lmao… 21 ton Rex? Are you fucking mental?
    *ADVANTAGES*

    Spinosaurus : “Longer,stronger hands with killer claws,Long jaw for gripping and connical teeth,longer,heavier,taller,faster,could shift between quadrupedal and bypedal in a fight but 95% stays bypedal,more fighting experience”
    Tyrannosaurus : “Only 1,4 tonnes stronger bite force,smarter *NOT PROVEN*,Had a better sight *NOT PROVEN*, had a better hearing and smell *NOT PROVEN*..
    Because they never had a documentary of the Spinosaurus brain,sight and sense of smell..

    *BONUS REX FACTS*

    T-Rex couldn’t actually do anything too much to the sail if it bit it.. Because each spinos spine was attached to vertebra if it broke it the damage would be minimal.. And even if it wasn’t minimal trex goes for the neck because of it’s instincts..
    T-Rex was “more” muscular so .. I guess that helps a bit..
    T-Rex as well known fought/hunted : Triceratops,Other T-rexes,Ankylosaurus,Some raptors,etc…
    T-rex did indeed have a big brain but its thinking part of it was the size of a wallnut he was in fact a 7 ton dummy he only had good instincts…
    T-rex had amazing eyes better 8x than a eagle and 16x times than a human [actually this is not accurate its simillar im just to lazy to go look]
    T-rex had a type of teeth when eating could hold food and had a infected bite.. But because the infection is the same with animals it Spino would stil enter the water and wash it off and weakening the infection even more..
    As I said in my previous statement trex does have an infected bite.. But every animal in the world has an infected bite.. For example if a cat bit me it would infect me but wouldn’t do serious infection damage because its infection isn’t that strong because I am way more powerfull in the internal and outernal system.. Spinosaurus too had an infected bite.. So both of their bites couldn’t hurt eachother..
    Cuz of rexes small arms rexes balance was all in their feet and tail.. Which wasn’t good at all.. Rex was clumsy and big.. Spino was bulky and balanced.. With all the support on its arms and legs plus the tail.. If it rushed the rex the rex would go down..
    The posterior part of the skull that housed the muscles was particularly large. Rare juvenile T. rex skeletons indicate that these dinosaurs were leggy speed walkers with relatively shallow skulls incapable of anchoring muscles that would generate a bite proportional to the adults. In Bates and Falkingham’s tests, juvenile T. rex bites topped out at about 880 pounds. But as the animal matured, its jaw-closing muscles grew exponentially, to the point where they were huge “even for an animal of its colossal size.”
    Unlike most other theropod dinosaurs, Spinosaurus possessed a long, narrow, crocodile-like snout that would have been extremely dangerous in close combat, more like a tapered sword than a blunt hatchet. Also, there’s some speculation that Spinosaurus may have been an occasional quadruped–that is, it spent most of its time on its two hind legs, but was also able to get down on all fours when circumstances demanded–giving it a low center of gravity in a fight. And did we mention that this theropod was an agile swimmer?
    While T-Rex known for having the “strongest” bite force on land.. If you actually count Sarchosuchus (Super Croc) as a land predator it had more than 5000 pounds a stronger bite force : http://news.nationalgeographic.com/news/2002/04/0404_020408_supercrocbite.html , http://www.smithsonianmag.com/science-nature/the-tyrannosaurus-rexs-dangerous-and-deadly-bite-37252918/
    You may know the rex as a big scaly fast theropod.. But in all reality.. Rex was a scavenging slow big chicken.. Yes.. Recent studies discover that Tyrannosaurus Rex was actually very slow.. A human in good shape could outrun it.. It was covered in feathers and hunted only if the hunt was easy enough or the prey was slow enough..
    While Rex is believed to have exceeded maximum bite force of around 12,800 pounds.. 8000-9000 pounds was probably the case.. http://www.npr.org/sections/thetwo-way/2017/05/17/528677883/tyrannosaurus-rexs-bite-force-measured-8-000-pounds-scientists-say And as this thread said Crocs were the lands strongest biters.. Not Tyrannosaurus Rex..
    New research says that Rex could not run at all.. That if it even wanted too it couldn’t or it would break its bones..https://www.usatoday.com/story/news/nation-now/2017/07/19/t-rex-couldnt-run-new-research-says/491122001/ https://www.washingtonpost.com/news/speaking-of-science/wp/2017/07/19/tyrannosaurus-rex-couldnt-run-but-it-was-a-speedy-walker/?utm_term=.45e648f0f38b
    So it was most likely a speed walker.. Max estimate was 12 mph..

    *Giga Carcha and T-rex size and weight :*
    Giganotosaurus Carolinii – Size 12 to 13 m (39 to 43 ft) , Weight 6.5 to 13.3t.. (My beliefs / 4.2 to 6-7)
    Tyrannosaurus Rex – Size 11.8 to 12.3 m (40 ft) 3.66 meters (12 ft) [Hips] , Weight 8.4 to 14 t.. (My beliefs / 6 to 10 t)
    Carcharadontosaurus Saharicus – Size 12 to 13 m (39 to 44ft) , Weight 6.2 to 15.1 t.. (My beliefs / 6 to 8-7 t)
    Carcharadontosaurus Iguindensis – Size 10 m (33 ft) , Weight 4 t (Sub species of C. Saharicus)

    (The weights are different everywhere.. But they all have something in common.. I’ve compilled all the weights and done the maths.. These are the end results and is probably what the creatures would weigh.. No one knows for sure because obvious reasons..)

    *BONUS SPINO FACTS*

    Spinosaurus was between 12.6-18 metres (41-60ft) in length and 7 to 20.9 tonnes in weight. (Even though that’s the weight they present 12-16t I believe is the magic number.. My opinion though..)
    Spinosaurus is know to have eaten fish, and most scientists believe that it hunted both terrestrial and aquatic prey; evidence suggests that it lived both on land and in water as a modern crocodilian does.
    Two species of Spinosaurus have been named: Spinosaurus aegyptiacus (meaning “Egyptian spine lizard”) and Spinosaurus maroccanus (meaning “Moroccan spine lizard”)
    Therefore, though some have retained the species as valid without much comment, most researchers regard S. maroccanus as a nomen dubium or as a junior synonym of S. aegyptiacus.
    Even if the other species existed .. One of them would be bipedal 100% and other 50% quadrupedal scientist are not so sure.. Its a possibility that the Aegyptiacus spino was the normal spino with long legs and the other one is the same with just shorter legs and other noticable features.
    An idea of what the sizes would look like side by side : http://orig13.deviantart.net/5b5d/f/2013/157/7/5/giant_cretaceous_theropods_size_comparison_by_brolyeuphyfusion9500-d67wdmf.png , Or you could look at this thread.. These sizes have the biggest skeletons found from every dinosaur.. http://www.dinosaurhome.com/what-was-the-largest-carnivorous-dinosaur-754.html
    Even though many people believe Spinosaurus did lose from the Sarcosuchus just look at this right here..
    *Sarcosuchus is an impressive predator and took down massive sauropods and other predatorian dinosaurus.. But in all reality Spinosaurus could win this.. Spinosaurus fought them on a daily basis like I said in my other previous statements..
    Did it fight them for food.. territory.. or something completely different.. Sarcosuchus dwarfed the Spinosaurus.. Spinosaurus because it fought it on a daily basis had evolved extreme reflexes and could probably even see it or hear it.. https://www.youtube.com/watch?v=F4gUKVCIrOs / Like it did in this documentary.. Maybe it even had the intelligence to know if it was there from past experiences.. Which makes the Spinosaurus very smart ..
    It could kill it in 3 ways : When Sarcosuchus ambushes it uses all of its stamina.. So Spinosaurus could easily dodge and stomp it killing it instantly.. It can even pick it up with its mouth and roll it around so it can claw its belly..
    It can throw it around with its arms like a toy and kill it that way… Or maybe he can just avoid it .. Like it did in this video.. (Suggest you watch the whole documentary on youtube.. Its easy to find.. You might learn something)
    Spinosaurus biteforce is around 1.9-5t
    I’m guessing that because Spinosaurus’s sail is connected to it’s spine it can’t fall on it’s back without breaking it. Guess what each spine is attached to a VERTEBRA which can rotate allowing the sail to bend.
    Spinosaurus habitat was .. Flood plains, forests and mangroves..
    Spino could shift between states but in quadruped for me could leen just a bit to look for something etc.. He could not 100% leen on his front that would be impossible for him
    Spino in his region fought/hunted : Supercrocs,Charcaradontosaurus,Rugops,Bahariasaurus,Ouranosaurus,Pterosaurs,large and i mean LARGE fish (Example : Prehistoric SawFish bigger than the great white shark.. Topping off 8 meteres and 2 metres in its saw..),and some sauropods which it would try to kill but they are too big..(Aegyptosaurus,Paralititan…) Although it could sometimes get lucky and kill a sub-adult or a wounded/sick adult..
    Spino could easily dominate carcharadontosaurus and was the king of its region no one was even close to him..Remember that carcharadontosaurus were bigger and faster and had bigger arms than giganotosaurus and t-rexes and carcharadontosaurus had a stronger bite than giganotosaurus
    Spinosaurus killed its fish prey by shaking it..
    One of the most accurate spinosaurus was this one “https://www.youtube.com/watch?v=Wv6hEuODrLg” and even though you may say “Oh well that’s outdated spino looks like *this* and *this*” Spinosaurus in this video has a lined body..A long neck.. Its arms are like 4-8 feet off the GROUND.. Which means short legs compared to its arms.. Slender snout and big sail (Which maybe was shorter at the middle it might just have been bitten off by other predators scientists are still debating the shape of its sail).. All which Spinosaurus presents today.. Even from a game that I play “http://the-isle-dinosaur-game.wikia.com/wiki/File:Type_B_Spinosaurus_Rex_Killer.png” Has a very accurate and simillar Spino if not the same as from the BBC’S documentary..While JP3 had a shorter neck..a way smaller sail.. massive legs and a broader and more robust snout.. If JP3 spino existed it would literally end every carnivorous dinosaur that went its way.. Spinosaurus that existed although may “represent” to be weaker is actually very simillar.. And could probably do the same things if not just a little bit weaker..
    While Spinosaurus speed isn’t certain it was in fact faster than a trex.. But the exact speed isn’t sure (13-30mph)(24.85mph is the most accurate result)
    Spino was more agile,faster as i said and could claw the t-rex before it even got the bite.. And because of its big body it could dodge the possible bite to its neck
    Spino because of its long hooky jaw and connical teeth could grip the t-rex and overpower him easily..
    Spinosaurus had holes in its snout like the modern day crocodile does which act like a sensor.. It used that to catch prey without even seeing it..
    Because of Spinos massive size it would probably scare the T-rex away. Because of t-rexes good instincts it would not go fight the spino because it would likely die or manage to come out alive badly injured.. Only if it really needed food and for protection of its baby/territory
    Spinosaurus wasn’t nimble.. It was hydrodynamic.. There’s a difference there.. While Sarchosuchus if ambushed the Rex it would kill it instantly and drag it in the water.. While Spino fought it on a regular basis.. So reflexes are better on the Spino
    We discovered 35% of Spino’s skeleton.. I think i can stick with the long legged Spino – *Proof Below*

    *Why Spinosaurus is in fact 95% bypedal :*

    Spino’s first phalanges( front finger bones) were not thick enough
    Spinosaurus had the shoulders of a bipedal animal. It’s shoulder was axe shaped were a quadrupedal animal has a thicker cylinder shaped scalpea.
    Spino’s wrist were too flexible to hold up it’s body. Knuckle walking animals had thick and stiff wrist for stability.
    Spino’s shoulders were aligned across the ribs and it’s arms were inwards moving, witch would limit over all movement
    The legs of the new spino were from a young indivisual
    Spino, being of a reptilian lineage, would not be able to stay in the water for too long(about 15 minutes) and if we follow this body type, spino would be helpless on land.?

    How i know Spinosaurus can stay ’bout 15 minutes under water ? :
    Semi aquatic crocodiles and alligators(semi aquatic animals in general can’t stay in the water for to long. Crocs can only stay in water for 15 minutes(30 if the absolutely need to) Iguanas stay in the water only for 30 minutes as well at the most. Semi aquatic birds also can’t stay for too long either. Ducks stay for only about 1-3 minutes. Since Spinosaur is a very distant relative to all birds and Crocs. You know all, of them being archosaurs. I would assume Spino is the same. ?

    *Why Spinosaurus has better fighting experience : *

    See most people would argue with my fact right here.. And I already said which animals Spinosaurus made contact with but just look at this..Tyrannosaurus is a highly specialized animal, it has a couple assets that are extremely well maintained and refined. In comparison the Spinosaurus is a generalist, It does many things well rather than a couple amazingly. Tyrannosaurus is a better land hunter than Spinosaurus, hands down.With its better sight and a couple of other things like being able to ambush prey easily because it didn’t have a huge spine bulging out of its back and maybe some other better senses.. Even though it may have been more of a scavanger as I said in my previous statements.. But Spinosaurus is the better fighter because of its enviornment. Spinosaurus has a body made to survive against any opponent, observable due to all of its possible weapons being well developed (Arms, Jaws, Muscles, Natural Armor, Size). The reason for this is because Spinosaurus lived amongst apex predators like Charcharadontosaurus and Sarcosuchus, and hunted fast herbivores like Ouranosaurus and deadly fish like Onchopristis. Spinosaurus may have a weaker bite than Tyrannosaurus but it is nowhere near weak and is meant for grasping hold of its prey while the Spinosaur tears it apart with its incredibly strong arms and claws. Spinosaurus could also conserve massive amounts of energy being semi-quadrupedal (Sitting and resting) and allowing it to be bipedal to fight and hunt, as well as quadruped to conserve energy by supporting its weight easier. In a realistic fight between a wild Spinosaur and a wild Tyrannosaur (which would never occur due to time placement, space placement, and the actual nature of the creatures) Spinosaurus would have a very good chance because it lives with carnivores that are larger and in my opinion more dangerous than any Tyrannosaurus. This gives it not only experience over Tyrannosaurus, as Tyrannosaurus was the only apex predator in its environment, but also Spinosaurus has a range, size, and energy advantage. Being able to keep Tyrannosaurus at a distance, tower over one, and even output more energy into the fight. This is not to say that every time that the two fought the Spinosaur would win, but it is nowhere near a false reality to assume that the Spinosaurus is a stronger and better creature despite its lesser bite force and owning less natural armor than Tyrannosaurus, especially in some areas where the Tyrannosaur is obviously lacking.?

    Links!!! :

    T-rex was not that smart :

    Spino documentary : (Which is still very accurate)

    You’re judging an animal by it’s diet, but just look at modern animals for example. How about the Grizzly bear? Their diet mostly consists of fish, berries, nuts, and the matter. Then you look at a cheetah. Equipped with weapons to take down animals such as gazelle and antelope in the savannahs of Africa. It’s no question that if you were to pit the bear against the feline, the Grizzly would come out the victor, so please think again before assuming things, bro. Thanks.?

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