Question?

actually i believe that spinosaurus was bulkier than giganotosaurus but lighter than tyrannosaurus because spinosaurus actually lived 55% of it's life in water so it is highly possible that it is bulkier than we think i perdonally give a 17.5 m long speciemen 12-13 tons :) ps. thanks for respecting people's opinion spinobro :)

Well, I actually think Spinosaurus was light-builded. Take in consideration all spinosaurids at this point. They all have pretty light bones, thin bodies and very short bellies. Also, they weren't practically built for being heavy, as they supported their weight in water most of the time and catched fish. Spinosaurus was still a huge and amazingly heavy animal, just not as heavy as an other theropod would be at its size.

I believe that Spino is just as bulky as Rex. Maybe people think Rex is more bulky because Rex is more compact; I don't know.

More than anything, because Spinosaurs in General were aquatic based predators, they wouldn't have to be as heavily built for taking on large prey. Rex on the other hand, was built to fight the large herbivores it hunted. Rex needed the extra muscle to fight them, so even if Rex was physically lighter than Spino, it would have been heavier at parity.

Well, look at the skulls. Tyrannosaurus skull [img]http://www.dailywhat.org.uk/media/108435/t%20rex%20skull.jpg[/img] Spinosaurus skull [img]http://img.timeinc.net/time/today_in_pictures/0907/tip_ny_0713_01.jpg[/img] Spino has a longer skull of course, but it's more lightly built. Why? Because of the prey it took. T-rex has a much heavier, more robust skull for taking on heavily defended prey. Spino has a long, "thin" skull, perfect for catching smaller prey. The same can be applied to the rest of the animal's body. In my book at least.

That about says it Rex Fan.

well i think you all know that my favorite is rex right but a new study into the skulls of spinosaurs show that both spinosaurus and suchomimius had impressive bites equivalent to those of large theropods such as giganotosaurus so considering that a 17 m long spino would be around 12 tons with an 8500 psi bite

Perhaps, I put Spinosaurus' bite force at about 4,000 psi. However, with a max estimate of 18,000 psi, T-rex's still much higher.

That's not too bad. I thought its bit would be 5 tons at the absolute most, so that's reasonable to me.

I get what you all mean but, whales are gigantic and live in water and are very bulky/heavy so spinosaurus probably was(but that's just my thought)also I'm sorry if this annoys anyone but I think spinosaurus was more like a killer whale.when possible he would take on large sauropods and crocodiles and hadrosaurs, and when big prey wasn't around he would go fishing but fish a lot so it would get the same amount of food.and I know that it had trouble dispatching prey but it could've used its long claws to slice open the prey like a fillet knife and stick his long snout into the gap and it could breath while doing this thanks to its snout.and if you look at the teeth pattern the front look like they were meant to grip but also rip with force and spinosaurus had a lot of force and could hold the carcass in place with its feet.To make it short I think spinosaurus was a heavy active predator that hunted mostly on land and also spent a lot of time in the water to fish but this is just my opinion and by the way:No problem Raptorrex

I also think spinosaurus were social animals and when needed ,would work together to take large prey like paralititan or drag a huge dead sea reptile onto the beach

Possible, but there are also slender and light weight marine animals as well. I see Spino hunting prey no larger than Ouranosaurus unless it had to. Your theory on it's weight is in line with your theory on how it hunts, while mine(and a few others) is in line with how we think it hunted.

We all have opinions on these things, and for the most part, I agree with Rex Fan. It's the difference in opinion that makes these forums the most fun. If we all had the same opinion, it would be kinda boring. Speaking of Rex Vs Spino, I have a confrontation in New World, but not a full out fight.

[quote]I'm sorry if this annoys anyone but I think spinosaurus was more like a killer whale[/quote] Some people see these creatures as crocodiles, and this is the first time I heard an analogy about whales. But sometimes I think that the spinosaurus was like a giant Brown bear, ie; a fish eater, a hunter of medium-sized animals and an opportunistic too.

Well I think that Spinosaurus was, due to his fat hump (the sail is unlikely) heavy guy, likely in the 9-12 t range. Spinosaurids are actually very heavily built animals.