Why T-Rex is better

Eh. Tyrannosaurus was big and powerful. Doesn't really make him better. That, and the skin probably couldn't protect a bite very well. I also believe that Tyrannosaurus Rexes weren't very good hunters. The leg had a bigger femur than the tibia, the exact opposite of what we see in fast dinosaurs like Dromeasauridae. Also, look at the olbary lobe in the brain. What hunter needs smell like that? Terrible eyesight and great smell. That doesn't make a hunter. Plus, if the thing tripped, it could kill itself. The bones aren't adding up, and neither is the brain. I think it may be big, nasty and a great fighter, but neither Rex or spino was better

I guess what I meant was that this is what T-Rex had over Spino. T-Rex was probably and ambush hunter, and what do you mean poor eyesight? It had binocular vision, so it could judge distance. What scavenger needs to judge distance?the skin could probably gave a little protection (maybe not much, but some).

CAT Scans of the brain and the position of the eyes in the skull all support binocular vision. Besides, a good sense of smell can be useful in hunting. It helps the predator track prey that's out of earshot or too far to see. Also helps in times when the lighting is poor.

It's just so hard to tell which dinosaur is actually BETTER. Both predators were on such different turfs and lived such different lifestyles. I have to disagree (respectfully) with several of you on several different points: @futurepaleantologist - Since T-rex most likely did most of his hunting in open Cretaceous plains, he would not have needed acute eyesight to spot prey such as Anatotitan or Edmontosaurus, both hadrosaurs from the late Cretaceous. Rex might have made ambush attacks from the cover of a thicket, but his size and stature would make it unlikely that he would be hunting in dense jungles and therefore need more acute eyesight like that of a dromeosaur. The large olbary lobes would simply be a useful tool for sensing prey nearby or perhaps detecting an opposing predator like another rex. @MrHappy - You can't just look at Rex's advantages. You also have to look at Spino's. If we are weighing the two dinosaurs on the same scale, putting them against each other in a fight, I agree that rex has the clear advantage and, environmental forces excluded, would most likely beat Spino. However, I do not believe this makes rex the "better" predator. Like I said before, both dinos had skills to dominate their own turfs. Rex's nasty bite force, Spino's long arms and claws. Maybe T-rex is more powerful, but at least give Spino the due respect of a ferocious and awesome dinosaur.

I know Dinosaur.Fanatic. Did you read the first bit of the description? I said I would do a why Spinosaurus is better in a few days. I was focusing more on the advantages that Rex had over Spino. Hope this clears thing up.

I get it. I just wanted to voice that I am generally against the "Which Dinosaur is Better" discussions in the first place. I'm glad you are going to do one about Spino as well. Hopefully nothing I said offended you or anything.

That's fine. If I do one for Rex, odds are I will do a follow up on Spino. I like both just fine (just Rex more), and I don't really like which one is better discussions either. If I do comment on those, I put advantages for both.

Àh, but @Dinosaur.Fanatic, just because an animal has binocular vision doesn't mean it can see well. Take Allosaurus for example

Spino is bigger and more impressive... but they would both die if a Predator X caught them on the beach. Going off on a tangent, but there's plenty of fan-written JP4 scripts that make the rex the villain again. Rex is in his grave. Spino's sun is setting. It's time for the marine reptiles to make it to the big screen.

I personally am against marine animals just because I don't see how they could fit the overall plot. I think that they are cool, but I just don't see anyway to have them in the story (except maybe sinking a ship or two. Nice plot idea though.

@futurepaleantologist I said nothing about binocular vision. As I stated, Rex wouldn't have required acute eyesight because he would be out in the open.

Oh, sorry. :(. Who was that then?... But, if I may follow up on your open plains thing: Tyrannosaurus still would need to look out for obstacles like large rocks, fallen trees etc. It didn't require great eyesight, but T. Rexes may not have been good enough. Btw I am NOT a spino fan. I don't think either Rex or Spino was better, I'm just bringing some stuff up.

That's fine. It's eyesight may not have been that good, but most likely it was. Notice that most animal's senses are usually attuned not only to get food, but also to their surroundings. I strongly believe that T-rex's eyesight would have been strong enough for it's surroundings. And again, large rocks and fallen trees would most likely not be found in the middle of plains. Well...maybe rocks, but you get the idea. Yes, I know you are neither Team Rex or Spino - you are Team Carchar. Don't let me get in the way of your opinion. :)

Tyrannosaurus almost certainly had good binocular vision. Futurepaleontologist1, you said earlier that Allosaurus' eyes were similar to Tyrannosaurus' and it had bad vision. Allo had eyes placed more to the side while Rex had forward facing eyes like a wolf or lion.

I thought Allo's were slightly closer. I didn't really say they were the same as Rexes eyes, they were just binocular.

Well, they did not have binocular vision. Their vision was similar to some tyrannosaurs like Albertosaurus, but not as good as T-rex's. The eyes faced forward and were closer than many herbivores, but were pretty standard when it came to the predators. Tyrannosaurus had unusually good vision for a big carnivore.

Tyrannosaurus Rex would win because of superior bite force. T. Rex's bite force was the largest in the animal kingdom (over 5000lbs, 2x more than a saltwater crocodile) and its teeth were specifically designed to crush through Triceratops horn and Ankylosaur armour. By comparison, the teeth of Spinosaurus and other large theropods like Giganotosaurus and Carcharodontosaurus were like giant meat hooks, great for holding the prey with its jaw, but the larger claws did most of the work. In addition, T. Rex possesed a mouthfull of bacteria which would infect bitemarks. So even if the bite from T. Rex didn't kill the prey, the biological weaponry would...

I don't think even the largest of T-Rex could bite through an Ankylosaurus's armour. A Trike's horn would be a battle, but it is possible. More than anything, the teeth could crush bone if it got a good bite in. What is going to help T-Rex against Ankylosaurus is intelligence. T-Rex would probably leave Ankylosaurus alone unless it was desperate.

Probably. If it was hungry enough, it would be smart enough to realize that if it flipped the ankylosaur, it would be an easy meal. That's where Tyrannosaurus' intelligence comes into play.

Probably. If it was hungry enough, it would be smart enough to realize that if it flipped the ankylosaur, it would be an easy meal. That's where Tyrannosaurus' intelligence comes into play.