Rex vs Spino

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I was debating on weather or not to respond, but I got bored. @ penguinsaurusrex Bigger isn't always better. Spinosaurus may be larger (in terms of length and height, and probably weight), but it just wasn't built for combat, in my (and a few others) opinion. Sure, Spinosaurus lived with Charcarodontosaurus, but the difference in their diets allowed for them to co-exist. Rex on the other hand, while it didn't have competition from other large carnivores, it's prey was more than enough to fill that slot. I'm not going to get into facts, if you really want to see pretty much anyone's opinion on how it would go, please refer to previous discussions.

The statement that Tyrannosaurus did not have competition is actually not too truthful. While Nanotyrannus was probably not a problem, a large pack of raptors might at least present a mild problem. Not to mention T-rex had it's own version of Sarcosuchus aka Deinosuchus. Just a thought.

Didn't think of that. I meant more all the time threats, not just once in a while threats.

And that's why Oxalaia is the best Spinosaur. Jk, that is Sigilmassasaurus. I know that this really doesn't relate to Spino vs Oxalaia, but the Argentinian was the second biggest predator of the time, and not the deadliest either. It was a more land based Spinosaur, and was porprotionatly as heavy as Spinosaurus, if not heavier.

What get's me is that this is one of my first discussions ever and it's still kicking, haha My first discussion was about Tyrannosaurus. Nothing more. Just T-rex, haha

I saw that this post was active, so I thought I'd join in for fun. I do think that when it came down to Spino vs T. rex, it would, be very, very even. A little bit on Rex's favor though. If it was Oxalaia vs rex, then it would be different. Okay, its 1 ton less than Spino, and 10 feet shorter, but it lived in the most dangerous place in dinosaur history, and you can't deny that. Argentina was literally crawling with carnivores, and the only food to eat is Titanosaurs. You have to be tough or food.

Well, as I fight writer, I probably shouldn't get involved in this, but what the heck. Why not. Okay, so here are Spinosaurus' advantages Spinosaurus: long and powerful arms, long and sharp claws Longer skull and powerful neck Powerful bite (4-5 t) Heavier and taller Can get up if knocked on its side Stronger (when you have a giant muscular ridge on your back from neck to tail tip, you're strong as hell) Intimidating muscular ridge Possibly some sort of armor (dealt with crocodiles and sharks daily) Swimming ability Way more experience fighting large carnivores (Bahariasaurus, Sauroniops, Sarcosuchus, Carcharodontosaurus, etc.) Possibly reflexes (catching fish flying down a stream requires amazing precision and timing) Now T. Rex's advantages More powerful bite (6-6.5 vs 4-5 t) Deadlier teeth (thicker and serrated) Possibly agility (didn't have the sail, but it did have a restricting short body with wide hips, so this may not be an advantage) Better sense of smell (perhaps the best ever) Possibly better hearing Handled deadly prey (Triceratops, Ankylosaurus) Both had excellent depth perception and intelligence, so those X factors don't come into play. I won't voice my opinion on the outcome, I just stated unbiased and supportable advantages each has.

I must agree with a bite of around 4 tons. It is more than twice athe size of a saltwater crocodile, and they have a bite of around 2 tons. Scale the fact that size matters with bite in crocodile world, and you have a redonculusly strong bite force.

Well, even then, the saltwater crocodiles that had measured bite forces were only 8 feet or so... I imagine Lolong-sized animals would bite down with at least 3 or 3.5t, coming in to the lower range estimates for Tyrannosaurus. If it hit 4, I wouldn't be surprised. I don't know how to do square cube force scaling or whatever like my sister, but scaling from a false gharial, a crocodilian with a 6 foot skull (Sarcosuchus) could bite down with 4t psi. And Spinosaurus' skull was exceptionally more robust than its kin's. Suchomimus skull [img]http://farm3.staticflickr.com/2593/4007208136_bac3269dbf_z.jpg[/img] Gharial skull [img]http://farm1.static.flickr.com/184/423917273_d47d753af0.jpg[/img] Spinosaurus skull [img]http://img.timeinc.net/time/today_in_pictures/0907/tip_ny_0713_01.jpg[/img] False gharial skull [img]http://scienceblogs.com/tetrapodzoology/wp-content/blogs.dir/471/files/2012/04/i-b1c1e8ccd24e691def253b0847b2bb5e-TS_giant_skull_BMNH.jpg[/img] Spinosaurus is much closer to false gharial than gharial, giving it a bite of roughly 4t, though if its ridge muscles connected to its neck, giving more power to the skull, additional force would be provided.

Even still, Gregory Erikson conducted studies down in Florida pertaining to Tyrannosaurus' bite force. Based on the bite mark evidence, he concluded, minimally, T-rex had a bite force of 6,800 psi. These bite however were not made at full force. Therefore, based off of studies on alligators and the estimated muscle mass of Tyrannosaurus, he concluded that Tyrannosaurus was capable of biting down with over 18,000 psi. Alligator Skull [img]http://www.boneclones.com/images/bc-129-lg.jpg[/img] (The alligators used in the study were about 10 ft long and 450 lbs. They bit down with about 2,500 psi and the highest recorded for an alligator is about 3,000 psi. This can be seen in the documentary Mammals vs Dinos). Alligators have skulls that are more robust than false gharials and crocs. They also have higher bite forces on the average. [img]http://www.azdrybones.com/images/SaltWaterCroc.jpg[/img] (Crocodile) [img]http://www.valleyanatomical.com/catalog/images/R%20S499%20FALSE%20GAVIAL%20SKULL.%200002.jpg[/img] (False Gharial) [img]https://lh4.googleusercontent.com/-H2BoZ-YUohQ/T-y0D0G8VoI/AAAAAAAAAXg/Bh8wLNkGlm8/s302/Spinosaurus-falsegharialSkullDiagram.jpg[/img] (Spino skull compared to False Gharial) [img]http://www.amnh.org/var/ezflow_site/storage/images/media/amnh/images/permanent-exhibitions/fossil-halls/hall-of-saurischian-dinosaurs2/tyrannosaurus-rex/150313-1-eng-US/tyrannosaurus-rex_dynamic_lead_slide.jpg[/img] (Tyrannosaurus skull) Just figured since DinoFights did Spino I'd do Rex ;)

A Spinosaurus Tooth/Teeth we're hollow and brittle, meaning they couldn't grasp and hold something for long without breaking. A Spinosaurus also had a long snout/mouth which mean't it couldn't hold up a lot of pressure. A Spinosaurus hands we're faced inward and very close to each other, they would have to unnaturally bend sideways to even hit something. A Spinosaurus may have eaten fish but that doesn't make it smart, It didn't have to hunt Ankylosaurus or Triceratops on a daily basis so it didn't require a lot of intelligence. Tyrannosaurus Rex had teeth that we're the size of bananas and weren't hollow meaning that they wouldn't break easy, maybe lose though if struggle lasted.A Tyrannosaurus Rex also had Bacteria filled in it's mouth similar to a Komodo Dragon. A Tyrannosaurus Rex had a small mouth/snout but it was focused with a lot of muscles meaning that it had a considerable bite force. Hands don't really matter for Rexe's besides maybe grasping giant prey. A Rex usually hunted the so called Duck Billed Dinosaurs, but on rare occasions had to hunt Ankylosaurus and Triceratops, even fighting these animals most likely ended 50/50 with the Rex or Trike dying, since it required to hunt such dangerous prey, it had to develop a lot of intelligence, Most people say T.Rex, Raptor and then Troodon we're the most intelligence Dinos, probably we're. Now to the fight, If you guy's so kindly look back into the Spino vs Rex video, you see in the beginning of the fight the T.Rex put's his massive chompers with banana teeth, bacteria and thousands of pounds of bite force into the Neck of the Spino, that's instantly death for it, If you see the Plane hitting the Spino also, it hit the spine which would of immediately either weakened the Spino greatly or killed it, it did neither. Anyway, the Spinosaurus had the T.Rex neck in his mouth for a few seconds to long, it would have been hard to keep it in his mouth do to not a lot of pressure built to withstand in the mouth and break it's teeth. You also see the T.Rex manhandle the Spino into a tree, also hitting it's Spine. Now that I proved the Rex would of won, Let me also put in that, People who say that Rex wasn't a Super Predator and was a scavenger, It takes quite a lot of food to keep up that body weight and size for the Rex, Scavenging wouldn't be able to suffice the Rex to keep it that size, meaning it's a Super/Apex Predator.

Papa Rex. You didn't prove anything. And this discussion, and all other discussion like this, are now dead. The only time T. rex vs Spino is now allowed is FBR. We all have our own thoughts it doesn't mean you or me is right, but we just don't agree.

Let's not come back to these older discussions please :) If you wish to talk about the outcome between a T-rex and a Spino in a fight, you should use the personal messages ;)

Spinosaurus would totaley win. As it is taller, it had longer legs. If it had longer legs, then it's faster. Also, Spinosaurus was pretty agile. Because of the spine, it's entire body was encased in muscle. It could twist it's entire body very quickly, like an eel. Spinos also had big, clawed arms.

*facepalm* Rex vs Spino is dead, that has been stated countless times. If you want to see out opinions, refer to previous discussions. If you're going say something, say its your opinion. Otherwise it just sounds like, "this is what I think, so this is what it is". Thanks for stating your opinion on Rex, it's very helpful when people give their opinion on both in these thing. I'm not going to say anything, because everyone knows my opinions, and you can too by simply looking at previous discussions. BTW, Welcome to scified, please enjoy the forums.

Hey, Happy9097, I started a discussion about T-rex and Velociraptor. Waiting for it to be accepted. Could you comment on it when it's up?