Actually, there IS proof that Spino was LONGER than Giganto...but not LARGER. Saurophaganax could of very well been both.

Spino was featured in JP 3 because real paleonotologists were technical advisers and asked what carnivorous dinos was bigger, and could possible have killed a T-Rex. And the real paleonotologists said the spino. And after 10 years, there is even more evidence to prove they made the best possible choice.

No paleontologist can make a believeable claim based on only one vertebrae. If the dinosaur with the supposedly larger vertebrate was more compact/stouter than similar species, it may not have been any larger at all.

There are not many remains of Spino either...The only remains were detroyed in a WWII bombing raid in Germany..

Yes, but now the biggest Carnivorous Dinosaur skull in the world is a Spino, and over six feet long. That is like one third bigger than any other known. A bit more substantial fossil than a single vertebrae.

And just because the first spino skeleton was destroyed in WWII, doesn't make it any less real. This one was a "juvenile" and still ranked as big or bigger than any other carn. dinosaur.

And as far as the lame, "only a fish eater" nonsense, there is actually as much or more evidence that it hunted other dinosaurs and agile pterosaurs, than there is for T-Rex, as we know from their teeth imbedded in other fossil dinos and pteros. That is as silly as saying the Salt Water Crocodile "is only a fish eater", when in truth they can prey on everything in their habitat except elephants, and are the most dangerous land predator in the world.

Even though the Spino is lighter built than some other theropods, the new, 65 foot plus spino still probably outweighed any other known theropod, as it is at one third larger than any other.

How do you know the Saurophaganax specimen was not a juvenile?


and Hippos...But they are made to eat fish.


So an extra 15 feet would add 3 tons? I don't think so.

Sure it would, just look how much weight is added to crocs as they get bigger by just a few feet.

I still don't think an extra 15 feet would add 3 tons.

I don't know why it matters which is the biggest. They all have their reasons for existing. Getting into a pissing contest over which prehistoric carnivore was the biggest is just sort of pointless, if you get my drift. I'd think the winner would be the animal that was best adapted to it's environment. They all went extinct, remember.

Maybe I'm wrong but isn't a Salt Water Crocodile Australain? Since when do elephants live in Australia? Maybe you meant Nile Crocodile

They also live in Indonesia and India India has the biggest crocs currently.

Nile Crocs have never known to attack Elephants...Salties have attacked great whites out in the ocean.

Wicked, you learn something new everyday. I didn't know they would attack sharks. I guess an elephant would just stomp it to death, even the big ones

Nile crocs take on Hippos...but lose...

I think maximum size should go by weight before length or height, but spino is pretty sick for sure. I do happen to really like allosaurus maximus, he's pretty sweet. As many have said who's to say that one was bigger than the other. what if these fossils were just juveniles, maybe some were adults? Looking at the fossil record i think you can throw quite a few of dinosaur species in the top, but its hard to say which would reach maximum lenght and weight. According to the very little evidence on spinosaurus he was long but possibly lanky compared to dinosaurs such as Giganotosaurus or Saurophagnax. This new Mapusaurus and species like carcharodontosaurus were also large predatory animals. Looking at what scientists have said, the higher credited ones, i would have to say, going by weight that allosaurus maximus, giganotosaurus, mapusaurus and spinosaurus are all way up there. I really cant pick, although i'd like to see allosaurus maximus and spinosaurus take the cake as heaviest and longest.

what puzzles me is this: if the carniverous Dinosaurs attained such unbelievable sizes then it is obvious that they had access to a great quantity of easily available food. The Dinosaurs upon which the carniverous Dinosaurs depended must have, themselves, existed in vast numbers - which does not make sense. Even if all the Earth's surface comprised one land mass in the form of Gondwanaland the fact that the higher temperatures that prevailed during the Jurassic stopped the formation of ice in the form of Glaciers and perhaps even at the poles so sea levels would have been at least 120 metres higher than they are today which means that even if all the Earth's land existed in one mass,much of that land would have been submerged.
The land mass available to the Dinosaurs may have been less than what is available to us today so how could the land available to the Dinosaurs have possibly supported them in such apparently gigantic numbers?

"Asian elephants are grazers (Africans are browsers). A full-grown Asian elephant eats approximately 150-200 pounds of food and drinks 30-50 gallons of water every day. Both Asian and African elephants will walk 30 to 50 miles daily in search of food, water, and preferred climate. "
We are talking here of an animal that reaches a maximum weight of around 13 tons but averages 6-8 tons fully grown. Asian Elephants are smaller.
But if we start making a comparison with the larger non- meat eating Dinosaurs which apparently achieved weights of up to 100 tons and,again, apparently herded in large groups (they must have done in order to protect themselves from other Dinosaurs and they were egg laying dont forget which means they would have been vulnerable to attack from a large variety of scavengers) then the quantity of food they would have required to sustain them in one day must have been quite staggering.
For instance - a herd of say 50, 70 ton vegetarian Dinosaurs would have required at least 82,500 LBS of vegetable matter per day in order to sustain them and would have cleared an estimated 5 square miles of food bearing land every day!!!!!!!!!!
Now, I would accept these figures if perhaps only a few herds of the larger Dinosaurs existed, but they must have in reality existed in very large numbers as they had 150 million years to evolve so we may be looking at herds numbering tens of thousands!!!!!!
And another factor has to be worked into this - the largest Dinosaurs must have been very restricted as to the type of land they could cross. A creature weighing 70-100 tons would have been denied access to mountainous or very soft ground which again. restricts the amount of food available to them.Swampy regions would have been entirely denied to them as would lake shores and river beds.

Yeah these larger sauropods would of really "mowed" the planets vegetation, but its hard to really say how much vegetation there was then.

I always though Spinosaurus was a really cool looking dino.

It was like a crocodile grew a sail, and learned to walk on its hind legs.

yah, this isn't confirmed. moose is right in that you are simply going by legth, well snkes are long but not dig. gigantosaurus is the largest but in a decade, or five years or 2 who knows this argument could have yet another candidate. frankly anyone sayong that tyrannosaurus is the biggest is plain wrong. as well as being over rated and outdated T. rex's name should be changed to has-been king. jone rivers rex, or maby britney spears rex. oh the possibilities. i am off the subject agian. i leave with this last statemant: there is no way that one could compair a huge saurapod to a freakin chicken!!!! the dinosaurs that survived are the ones that shrunk and learned to fly leaving spino and big al britney rex and the previously claimed mouse eating appatosaurus to die with the rest. darwins theary of evolution fits in like a missing peice of a jigsaw puzzle that you found under the coutch cushion stuch to a sucher and an unidentifiable. eeewwww. gigantosaurus is the biggest hands down and spino is the longest. different things easily confused.

i like dilophosaurus i like things not in the norm like T rex. and that i like the oddities.

obviously animals will eat food not in there normal idet but that is out of desperation hippo's sometimes eat carion. the "lame" statemants of fish eating are based on the crocodilian shaped head of the spinosauridae family, wich includes baryonyx and suchomimus (discoverd by my faveraite paleantologist, Paul Sereno and did i mention that spinosaridae is my favorit group) all in all spinosauridae is one of the most mysterious groups other than the theriznosaurs.

The spino wasnt the biggest and im far too tired to tell you why its dumb and annoying cause hes a dumby head!no but really it wasnt the biggesta nd newver will be

Sorry guy. This is now common knowledge in the paleontological community and no real scientist is disputing it........ just kids like you who like their T-Rex action figure more than their Spino action figure. I guess it comes from your growing up watching "Barney".

Sorry guy. Not only is Spino by far the longest, but it also has the largest skull. It would also be the tallest carnosaur by default, and of the "biggies" it would also have the largest fore arms. And being a third bigger than all the others will also make it by far the heaviest. But true, if a spino and a t rex were the same length, the Rex would normally be a heavier bodied animal.

This is not to say a bigger carnosaur may someday turn up, but consider this. Only two spinos have been found so far. The first one was only a juvenile, and was still slightly larger than the rest. And now an adult has been found and it is a third bigger than all the rest.

Aw whats wrong,Are you sad caus eyou know your fav dino isnt the largest?Aw its ok ill change your diaper,No really you talk about barney and yet you get all your dino info from him.Cause let me tell you something,You arnt proveing anything but the fact that you cant stand to be wrong.Looks like somebody didnt watch teletubbies today.

The facts are all on my side guy, Go back through the thread if you like and see the links to real scientific sites that confirm this.

I stand corrected.....Soryy for the uh,Insults and all

Actually not only are the carnivores huge, but you must also consider that we have dug up quite a number of them. Fossilization is normally a rare event, were it not for the Le Bria Tar Pits we would not have nearly as much data on early mammalian carnivores.

Clearly, to support such carnivores, the herds and the plants to support the herbivores had to exist on a whole different scale. And this seems to be what we are finding. The sad truth is, today's world is almost a desert compared to the age of dinosaurs.

o.k this is Realy starting to bug the crap out of me draconic chronicler i dont hate you or nothing But your Quote " Go back through the thread if you like and see the links to real scientific sites that confirm this" hello are you 5 or somthing this is the internet Nothing is scientific on the internet i love spino dont get me wrong but its the longest 100% hands down and gigantosaurs is still the Biggest by the mass of it you dont compare a snake and a Rino and say the snake is bigger dude if you want to give Proof of your Clam YOU get a scientific Video Proof of spino is bigger not Wikki half of Wikki says is BS Like Globle Warm is BS

So are you saying the latest Spino fossil cited in numerous websites is just a fantasy? If the "internet doesn't count", I am sure the very next published dino book will document it. For your information, a spino approximately one third longer than every other theropod would in all liklihood also be the heaviest.

Actually, the large carnivores are not particularly common. I didn't think there more than a dozen or so T Rexes ever found, and although many spino teeth are found, only two more or less identifiable animals.

If dinos had a mammalian metablolism, then yes, the amount of food they must intake would be almost impossible, but the large ones at least were probably ectotherms. I seem to recall one model that proved it would have been impossible for the large sauropods to be endotherms, for even if they fed 24 hours a day, their relatively tiny heads could not intake enough food to sustain such huge bodies. And we see the largest of all theropods (Spino), with a sail, which seems to be an ectothermic strategy to raise and lower body temperature. And if Spino was cold blood, all of the other large carnosaurs probably were also.

Good point with the sail. While there is still controversy about whether they were warm or cold blooded, the sail makes a strong argument to a cold blooded biology. Still, with all of the giant animals and plants, it looks like the earth never really recovered fully, that this world just has less life to it.