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Spinosaurus aegyptiacus v Tyrannosaurus rex
Topic Started: Jan 7 2012, 02:16 AM (459,231 Views)
Wolf Eagle
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Tyrannosaurus rex
Tyrannosaurus is a genus of coelurosaurian theropod dinosaur. The species Tyrannosaurus rex (rex meaning "king" in Latin), commonly abbreviated to T. rex, is a fixture in popular culture. It lived throughout what is now western North America, with a much wider range than other tyrannosaurids. Fossils are found in a variety of rock formations dating to the Maastrichtian age of the upper Cretaceous Period, 67 to 65.5 million years ago.[1] It was among the last non-avian dinosaurs to exist before the Cretaceous–Paleogene extinction event. Like other tyrannosaurids, Tyrannosaurus was a bipedal carnivore with a massive skull balanced by a long, heavy tail. Relative to the large and powerful hindlimbs, Tyrannosaurus forelimbs were small, though unusually powerful for their size, and bore two clawed digits. Although other theropods rivaled or exceeded Tyrannosaurus rex in size, it was the largest known tyrannosaurid and one of the largest known land predators. By far the largest carnivore in its environment, Tyrannosaurus rex may have been an apex predator, preying upon hadrosaurs and ceratopsians, although some experts have suggested it was primarily a scavenger. The debate over Tyrannosaurus as apex predator or scavenger is among the longest running in paleontology. Tyrannosaurus rex was one of the largest land carnivores of all time; the largest complete specimen, FMNH PR2081 ("Sue"), measured 12.8 metres (42 ft) long, and was 4.0 metres (13.1 ft) tall at the hips. Mass estimates have varied widely over the years, from more than 7.2 metric tons (7.9 short tons), to less than 4.5 metric tons (5.0 short tons), with most modern estimates ranging between 5.4 and 6.8 metric tons (6.0 and 7.5 short tons). Packard et al. (2009) tested dinosaur mass estimation procedures on elephants and concluded that dinosaur estimations are flawed and produce over-estimations; thus, the weight of Tyrannosaurus could be much less than usually estimated. Other estimations have concluded that the largest known Tyrannosaurus specimens had a weight exceeding 9 tonnes.

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Spinosaurus aegyptiacus
Spinosaurus is a genus of theropod dinosaur which lived in what is now North Africa, from the lower Albian to lower Cenomanian stages of the Cretaceous period, about 112 to 97 million years ago. Spinosaurus may be the largest of all known carnivorous dinosaurs, even larger than Tyrannosaurus and Giganotosaurus. Estimates published in 2005 and 2007 suggest that it was 12.6 to 18 metres (41 to 59 ft) in length and 7 to 20.9 tonnes (7.7 to 23.0 short tons) in weight. The skull of Spinosaurus was long and narrow like that of a modern crocodilian. Spinosaurus is thought to have eaten fish; evidence suggests that it lived both on land and in water like a modern crocodilian. The distinctive spines of Spinosaurus, which were long extensions of the vertebrae, grew to at least 1.65 meters (5.4 ft) long and were likely to have had skin connecting them, forming a sail-like structure, although some authors have suggested that the spines were covered in fat and formed a hump. Multiple functions have been put forward for this structure, including thermoregulation and display. Dal Sasso et al. (2005) assumed that Spinosaurus and Suchomimus had the same body proportions in relation to their skull lengths, and thereby calculated that Spinosaurus was 16 to 18 meters (52 to 59 ft) in length and 7 to 9 tonnes (7.7 to 9.9 short tons) in weight. The Dal Sasso et al. estimates were criticized because the skull length estimate was uncertain, and (assuming that body mass increases as the cube of body length) scaling Suchomimus which was 11 meters (36 ft) long and 3.8 tonnes (4.2 short tons) in mass to the range of estimated lengths of Spinosaurus would produce an estimated body mass of 11.7 to 16.7 tonnes (12.9 to 18.4 short tons).

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Edited by Taipan, Apr 24 2015, 10:10 PM.
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Replies:
dino-ken
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Herbivore
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Quote:
 
T-Rex was the strongest of all Theropods.

He had a jaw pressure of 4 tonnes, while the Spinosaurus had pressure from the jaws of 2.5 t.


Actually T.rex's maximum bit force has been estimated at nearly 6 metric tons, not 4 tons.

But to call it the strongest of all Theropods is ... a baseless assumption.

Yes - it is the most powerful member of the Tyrannosaur, and the coelurosaurs - but that's because it is the largest species of both. And it may have the most powerful bite force of any known theropod. But that doesn't mean it's the strongest or largest theropod.










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Ausar
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MrGiganotosaurus
Mar 11 2013, 07:07 AM
7Alx
Mar 10 2013, 07:29 AM
MrGiganotosaurus
Give me evidence about why you think T. rex was stronger?
DarkAllosaurus
We don't know how much Spinosaurus was bigger than T. rex? So saying It is much bigger is wrong. Ok. Spinosaurus might be that big, but not evidence that it is/must be.
T-Rex was the strongest of all Theropods.

He had a jaw pressure of 4 tonnes, while the Spinosaurus had pressure from the jaws of 2.5 t.
Spino's bite MAY have come close to T.rex's minimum bite force. So don't think Spinosaurus couldn't give off a nasty bite as well.
Edited by Ausar, Mar 11 2013, 10:37 AM.
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dinosaur
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MrGiganotosaurus
Mar 11 2013, 07:07 AM
7Alx
Mar 10 2013, 07:29 AM
MrGiganotosaurus
Give me evidence about why you think T. rex was stronger?
DarkAllosaurus
We don't know how much Spinosaurus was bigger than T. rex? So saying It is much bigger is wrong. Ok. Spinosaurus might be that big, but not evidence that it is/must be.
T-Rex was the strongest of all Theropods.

He had a jaw pressure of 4 tonnes, while the Spinosaurus had pressure from the jaws of 2.5 t.
That's a fact right there :)
But all these people are very ignorant. I told them the same thing, but they wanna have it their way.
Also, they should ask themselves this, if spinosaurus only hunted fish and small dinos, why do they think a spinosaurus would win against a powerful, better armed, and better skilled tyrannosaurus?
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SpinoInWonderland
The madness has come back...
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MrGiganotosaurus
Mar 11 2013, 07:07 AM
T-Rex was the strongest of all Theropods.
So theropods are synonymous with Tyrannosauroidea then? Really now?
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mega t.rex the magnificent
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I will favor t.rex on this one.
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Shaochilong
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dinosaur
Mar 11 2013, 03:05 PM
MrGiganotosaurus
Mar 11 2013, 07:07 AM
7Alx
Mar 10 2013, 07:29 AM
MrGiganotosaurus
Give me evidence about why you think T. rex was stronger?
DarkAllosaurus
We don't know how much Spinosaurus was bigger than T. rex? So saying It is much bigger is wrong. Ok. Spinosaurus might be that big, but not evidence that it is/must be.
T-Rex was the strongest of all Theropods.

He had a jaw pressure of 4 tonnes, while the Spinosaurus had pressure from the jaws of 2.5 t.
That's a fact right there :)
But all these people are very ignorant. I told them the same thing, but they wanna have it their way.
Also, they should ask themselves this, if spinosaurus only hunted fish and small dinos, why do they think a spinosaurus would win against a powerful, better armed, and better skilled tyrannosaurus?
Yeah, we're the ignorant ones when we constantly post supporting evidence, while you rely on your imagination and what is arguably the worst dinosaur documentary of all time. Makes perfect sense, right?
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SpinoInWonderland
The madness has come back...
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Lord of the Allosaurs
Mar 12 2013, 12:32 PM
dinosaur
Mar 11 2013, 03:05 PM
MrGiganotosaurus
Mar 11 2013, 07:07 AM
7Alx
Mar 10 2013, 07:29 AM
MrGiganotosaurus
Give me evidence about why you think T. rex was stronger?
DarkAllosaurus
We don't know how much Spinosaurus was bigger than T. rex? So saying It is much bigger is wrong. Ok. Spinosaurus might be that big, but not evidence that it is/must be.
T-Rex was the strongest of all Theropods.

He had a jaw pressure of 4 tonnes, while the Spinosaurus had pressure from the jaws of 2.5 t.
That's a fact right there :)
But all these people are very ignorant. I told them the same thing, but they wanna have it their way.
Also, they should ask themselves this, if spinosaurus only hunted fish and small dinos, why do they think a spinosaurus would win against a powerful, better armed, and better skilled tyrannosaurus?
Yeah, we're the ignorant ones when we constantly post supporting evidence, while you rely on your imagination and what is arguably the worst dinosaur documentary of all time. Makes perfect sense, right?
It would be better if everyone put that dinosaur guy on ignore...he's completely hopeless, he places baseless child imagination and cherry-picked inaccuracies over evidence...
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dinosaur
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@ brolyeuphyfusion

Why is this forum letting u Do this?
I also saw one of ur videos called tyrannosaurus vs spinosaurus the truth. And most of the youtubers disagreed with u and offended u somehow. U tried ur best to show the people ur truth, but it didn't work! see?
u ain't got Nothing on me!
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theropod
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dino-ken
Mar 11 2013, 08:48 AM
Quote:
 
T-Rex was the strongest of all Theropods.

He had a jaw pressure of 4 tonnes, while the Spinosaurus had pressure from the jaws of 2.5 t.


Actually T.rex's maximum bit force has been estimated at nearly 6 metric tons, not 4 tons.

But to call it the strongest of all Theropods is ... a baseless assumption.

Yes - it is the most powerful member of the Tyrannosaur, and the coelurosaurs - but that's because it is the largest species of both. And it may have the most powerful bite force of any known theropod. But that doesn't mean it's the strongest or largest theropod.










totally agreed.


Is it just me or does this debate become more and more absurd? T. rex a shapeless lump of muscles...

please, where lies the problem with banning Dinosaur? After all Taipan doesn't have problems banning people who do not post BS in every post, so why not this dinosaur guy?
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theropod
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So to make this clear: T. rex was not the strongest of all theropods. t. rex was not the largest. It is possible it had the strongest bite, and the bulkiest built. That's all.

Several other theropods surpass it in size, including weight, which means muscle mass and thus strenght. Several other theropods have bites that are equally formidable tough not by the means of a tremendous pressure that is generated by the adductor muscles.
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Temnospondyl
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I disagree with many people who belive in 9.5 ton Sue.
A 9 ton T-Rex would look like this:
Posted Image

Tyrannosaurus Sue was more likely 6 tons. And 12 tons is a bit too much for Spino. According to PD, it was 11 t.
Edited by Temnospondyl, Mar 12 2013, 09:21 PM.
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Spinodontosaurus
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theropod
Mar 12 2013, 09:10 PM
So to make this clear: T. rex was not the strongest of all theropods. t. rex was not the largest. It is possible it had the strongest bite, and the bulkiest built. That's all.

Several other theropods surpass it in size, including weight, which means muscle mass and thus strenght. Several other theropods have bites that are equally formidable tough not by the means of a tremendous pressure that is generated by the adductor muscles.
Well, several theropods roughly matched it in size, that's for sure. Not sure if I agree with several being larger, but whatever.
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SpinoInWonderland
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theropod
Mar 12 2013, 09:10 PM
So to make this clear: T. rex was not the strongest of all theropods. t. rex was not the largest. It is possible it had the strongest bite, and the bulkiest built. That's all.
Actually even the bulkiest build of theropods doesn't belong to Tyrannosaurus. It goes to Therizinosaurus instead...
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MysteryMeat
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Temnospondyl
Mar 12 2013, 09:19 PM

Posted Image

That would be a 30 ton t. rex.
Have you even checked out the paper?
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TheROC
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Temnospondyl
Mar 12 2013, 09:19 PM
I disagree with many people who belive in 9.5 ton Sue.
A 9 ton T-Rex would look like this:
Posted Image

Tyrannosaurus Sue was more likely 6 tons. And 12 tons is a bit too much for Spino. According to PD, it was 11 t.
PD said 11 tonnes. Which is 12 tons.

Either way, its actually conservative if you scale it down to smaller sizes to see what the weight would be.

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