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Spinosaurus aegyptiacus v Tyrannosaurus rex
Topic Started: Jan 7 2012, 02:16 AM (459,209 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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Carcharadon
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I dont really have such an enormous problem of what he thinks about t.rex............. but what i am really against him is the bullshit he said about allosaurus being a poor fighter, but it was not a poor fighter at all, i dont even need to explain why because its too obvious.
Edited by Carcharadon, Jul 1 2013, 10:26 PM.
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Big G
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Jun 23 2013, 11:20 AM
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Jun 20 2013, 11:11 AM
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Tyrannosaurus weighs up to 7 tons. But some exceed 9 tons
Spino is 10-12 tons. Max 14 tons.

Tyrannosaurus has a better bite and sharp foot claws sharper and longer than spino's, His head has lots of muscle too. Spino has a vulnerable area other than the neck, the spines!
Lets see what of this post is true/relevant:

1: T.rex has a better bite.
2: Weight, mostly.
3: How about nothing else?

9 tons for T.rex is kinda pushing it, especially seeing as most of the "Bigger than Sue" Rexes where overestimated.
Maximum of 14 tons for Spino is quite light for a Theropod that large. An 18 meter Spino would probably be around 16 tons.
Footclaws? Please. First of all, Spino's footclaws haven't been found. And if we find them, they'll probably be larger than T.rex's. Second, These are multi-ton Theropods. They're not gonna be kicking each other. The only way the footclaws can be used is if one knocks the other on the ground, in which case it would already be pretty much over for the Dinosaur now on the ground, whether it's opponent has footclaws or not. Not to mention, we both know who is most likely to knock it's opponent on the ground. If you don't, here's a hint: It's really frickin huge.
A more muscular head? Yes, due to it's larger jaw muscles, which is also covered by the better bite thing.
Lastly, the spines are not a weakness. T.rex can hit them all it likes, Spino isn't gonna die from breaking them. The only thing that will happen is it getting hurt in a similar way you'd get hurt if you broke your tailbone. Not to mention, how on earth is T.rex going to reach the spines? The only way that would happen is if it got Spino on the ground (Which will be really difficult), or if the Spinosaurus is so stupid it basically presents itself as a tasty snack (Which is not gonna happen.).

16 tons seems to be too for a biped.
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Godzillasaurus
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Scipionyx
Jul 1 2013, 10:36 PM
DarkGricer
Jun 23 2013, 11:20 AM
Super Kaizer Ghidorah
Jun 20 2013, 11:11 AM
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Here's your winner!



Tyrannosaurus weighs up to 7 tons. But some exceed 9 tons
Spino is 10-12 tons. Max 14 tons.

Tyrannosaurus has a better bite and sharp foot claws sharper and longer than spino's, His head has lots of muscle too. Spino has a vulnerable area other than the neck, the spines!
Lets see what of this post is true/relevant:

1: T.rex has a better bite.
2: Weight, mostly.
3: How about nothing else?

9 tons for T.rex is kinda pushing it, especially seeing as most of the "Bigger than Sue" Rexes where overestimated.
Maximum of 14 tons for Spino is quite light for a Theropod that large. An 18 meter Spino would probably be around 16 tons.
Footclaws? Please. First of all, Spino's footclaws haven't been found. And if we find them, they'll probably be larger than T.rex's. Second, These are multi-ton Theropods. They're not gonna be kicking each other. The only way the footclaws can be used is if one knocks the other on the ground, in which case it would already be pretty much over for the Dinosaur now on the ground, whether it's opponent has footclaws or not. Not to mention, we both know who is most likely to knock it's opponent on the ground. If you don't, here's a hint: It's really frickin huge.
A more muscular head? Yes, due to it's larger jaw muscles, which is also covered by the better bite thing.
Lastly, the spines are not a weakness. T.rex can hit them all it likes, Spino isn't gonna die from breaking them. The only thing that will happen is it getting hurt in a similar way you'd get hurt if you broke your tailbone. Not to mention, how on earth is T.rex going to reach the spines? The only way that would happen is if it got Spino on the ground (Which will be really difficult), or if the Spinosaurus is so stupid it basically presents itself as a tasty snack (Which is not gonna happen.).

16 tons seems to be too for a biped.
And yet 20 tons seems appropriate for the largest mosasaurs, animals that were not only shorter than spinosaurus in length, but also MUCH more slender. I think at least 16 tons seems reasonable.
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Spinodontosaurus
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So... basing theropod mass estimates on comparisons with completely unrelated taxa and weight estimates for said taxa that don't seem to have any sort of basis?

For the record I personally would estimate MSNM V4047 at 12-13 tonnes, at the size Scott Hartman has it scaled to, with Sue, MUCPv-95 etc. about 8 tonnes.
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theropod
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20t for the largest mosasaurs is extremely unlikely, especially since they were shorter, but even at the same lenght still doubtful. That based on extrapolation from a monitor lizard. Tough I have to note at least some derived mosasaurs probably developed a deep-bodied, tunniform shape.
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Godzillasaurus
Jul 2 2013, 03:09 AM
And yet 20 tons seems appropriate for the largest mosasaurs, animals that were not only shorter than spinosaurus in length, but also MUCH more slender. I think at least 16 tons seems reasonable.
20 t were proposed for 18 m long mosasaurs (which very likely didn't exist among the known Genera, except for freak specimen), these are by no means shorter.
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Godzillasaurus
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Quote:
 
So... basing theropod mass estimates on comparisons with completely unrelated taxa and weight estimates for said taxa that don't seem to have any sort of basis?


I was simply trying to give you my two cents. The size and weight of prehistoric animals varies, and quite a bit,

Quote:
 
Tough I have to note at least some derived mosasaurs probably developed a deep-bodied, tunniform shape.


Well I was referring to only animals like mosasaurus and tylosaurus. Obviously there were more robust mosasaurs out there, like globidens and platecarpus.

Quote:
 
20 t were proposed for 18 m long mosasaurs (which very likely didn't exist among the known Genera, except for freak specimen), these are by no means shorter.


Well 20 tons for an animal that was still very slender and snake-like in build is nonetheless ridiculous, even when it is 18 meters long.
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theropod
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^so what is your point if even you think it is ridiculous.

Besides, Mosasaurus itself is also a very late mosasaur and possibly also tunniform, like the shape that is presumed for Platecarpus and Prognathodon. Tough I must say deep-bodied is a bit exagerated looking at it: http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2010/9/1/1283345206264/Platecarpus-004.jpg

a 20t estimate would only make sense with such a body shape. For a serpentine, elongate mosasaur, no way it would be even close. And still, it would definitely be at a pretty liberal elnght figure, tough I wouldn't totally exclude this.
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Teratophoneus
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Jul 2 2013, 03:09 AM
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Jul 1 2013, 10:36 PM
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Jun 23 2013, 11:20 AM
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Jun 20 2013, 11:11 AM
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Here's your winner!



Tyrannosaurus weighs up to 7 tons. But some exceed 9 tons
Spino is 10-12 tons. Max 14 tons.

Tyrannosaurus has a better bite and sharp foot claws sharper and longer than spino's, His head has lots of muscle too. Spino has a vulnerable area other than the neck, the spines!
Lets see what of this post is true/relevant:

1: T.rex has a better bite.
2: Weight, mostly.
3: How about nothing else?

9 tons for T.rex is kinda pushing it, especially seeing as most of the "Bigger than Sue" Rexes where overestimated.
Maximum of 14 tons for Spino is quite light for a Theropod that large. An 18 meter Spino would probably be around 16 tons.
Footclaws? Please. First of all, Spino's footclaws haven't been found. And if we find them, they'll probably be larger than T.rex's. Second, These are multi-ton Theropods. They're not gonna be kicking each other. The only way the footclaws can be used is if one knocks the other on the ground, in which case it would already be pretty much over for the Dinosaur now on the ground, whether it's opponent has footclaws or not. Not to mention, we both know who is most likely to knock it's opponent on the ground. If you don't, here's a hint: It's really frickin huge.
A more muscular head? Yes, due to it's larger jaw muscles, which is also covered by the better bite thing.
Lastly, the spines are not a weakness. T.rex can hit them all it likes, Spino isn't gonna die from breaking them. The only thing that will happen is it getting hurt in a similar way you'd get hurt if you broke your tailbone. Not to mention, how on earth is T.rex going to reach the spines? The only way that would happen is if it got Spino on the ground (Which will be really difficult), or if the Spinosaurus is so stupid it basically presents itself as a tasty snack (Which is not gonna happen.).

16 tons seems to be too for a biped.
And yet 20 tons seems appropriate for the largest mosasaurs, animals that were not only shorter than spinosaurus in length, but also MUCH more slender. I think at least 16 tons seems reasonable.
You can not compare the two animals. The mosasaurs lived in water, where it is easier to support its own weight. By the same reasoning, Supersaurus is slighty less than 200 tons, since it was longer than the blue whale. I think that Spinosaurus is around 12 tons.
Edited by Teratophoneus, Jul 4 2013, 04:02 AM.
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SpinoInWonderland
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Not even the largest mosasaurs were close to 20 tonnes. ~5-7 tonnes(similar to Tyrannosaurus in mass) sounds more palatable for Hainosaurus, the largest known mosasaur.
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Shaochilong
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Jul 4 2013, 04:01 AM
Godzillasaurus
Jul 2 2013, 03:09 AM
Scipionyx
Jul 1 2013, 10:36 PM
DarkGricer
Jun 23 2013, 11:20 AM
Super Kaizer Ghidorah
Jun 20 2013, 11:11 AM
Posted Image

Here's your winner!



Tyrannosaurus weighs up to 7 tons. But some exceed 9 tons
Spino is 10-12 tons. Max 14 tons.

Tyrannosaurus has a better bite and sharp foot claws sharper and longer than spino's, His head has lots of muscle too. Spino has a vulnerable area other than the neck, the spines!
Lets see what of this post is true/relevant:

1: T.rex has a better bite.
2: Weight, mostly.
3: How about nothing else?

9 tons for T.rex is kinda pushing it, especially seeing as most of the "Bigger than Sue" Rexes where overestimated.
Maximum of 14 tons for Spino is quite light for a Theropod that large. An 18 meter Spino would probably be around 16 tons.
Footclaws? Please. First of all, Spino's footclaws haven't been found. And if we find them, they'll probably be larger than T.rex's. Second, These are multi-ton Theropods. They're not gonna be kicking each other. The only way the footclaws can be used is if one knocks the other on the ground, in which case it would already be pretty much over for the Dinosaur now on the ground, whether it's opponent has footclaws or not. Not to mention, we both know who is most likely to knock it's opponent on the ground. If you don't, here's a hint: It's really frickin huge.
A more muscular head? Yes, due to it's larger jaw muscles, which is also covered by the better bite thing.
Lastly, the spines are not a weakness. T.rex can hit them all it likes, Spino isn't gonna die from breaking them. The only thing that will happen is it getting hurt in a similar way you'd get hurt if you broke your tailbone. Not to mention, how on earth is T.rex going to reach the spines? The only way that would happen is if it got Spino on the ground (Which will be really difficult), or if the Spinosaurus is so stupid it basically presents itself as a tasty snack (Which is not gonna happen.).

16 tons seems to be too for a biped.
And yet 20 tons seems appropriate for the largest mosasaurs, animals that were not only shorter than spinosaurus in length, but also MUCH more slender. I think at least 16 tons seems reasonable.
You can not compare the two animals. The mosasaurs lived in water, where it is easier to support its own weight. By the same reasoning, Supersaurus is slighty less than 200 tons, since it was longer than the blue whale. I think that Spinosaurus is around 12 tons.
What? Spinosaurus is about 16 m-17 m long and blue whales are around 25-30 m long.
Additionally they don't average anywhere near 200 tons. The largest specimen on record weighed around 190 t, but she was approximately 40 t heavier than what is considered to be a "typical" large individual.
Edited by Shaochilong, Jul 4 2013, 04:08 AM.
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Teratophoneus
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Jul 4 2013, 04:08 AM
Dinosaur Planet
Jul 4 2013, 04:01 AM
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Jul 2 2013, 03:09 AM
Scipionyx
Jul 1 2013, 10:36 PM
DarkGricer
Jun 23 2013, 11:20 AM
Super Kaizer Ghidorah
Jun 20 2013, 11:11 AM
Posted Image

Here's your winner!



Tyrannosaurus weighs up to 7 tons. But some exceed 9 tons
Spino is 10-12 tons. Max 14 tons.

Tyrannosaurus has a better bite and sharp foot claws sharper and longer than spino's, His head has lots of muscle too. Spino has a vulnerable area other than the neck, the spines!
Lets see what of this post is true/relevant:

1: T.rex has a better bite.
2: Weight, mostly.
3: How about nothing else?

9 tons for T.rex is kinda pushing it, especially seeing as most of the "Bigger than Sue" Rexes where overestimated.
Maximum of 14 tons for Spino is quite light for a Theropod that large. An 18 meter Spino would probably be around 16 tons.
Footclaws? Please. First of all, Spino's footclaws haven't been found. And if we find them, they'll probably be larger than T.rex's. Second, These are multi-ton Theropods. They're not gonna be kicking each other. The only way the footclaws can be used is if one knocks the other on the ground, in which case it would already be pretty much over for the Dinosaur now on the ground, whether it's opponent has footclaws or not. Not to mention, we both know who is most likely to knock it's opponent on the ground. If you don't, here's a hint: It's really frickin huge.
A more muscular head? Yes, due to it's larger jaw muscles, which is also covered by the better bite thing.
Lastly, the spines are not a weakness. T.rex can hit them all it likes, Spino isn't gonna die from breaking them. The only thing that will happen is it getting hurt in a similar way you'd get hurt if you broke your tailbone. Not to mention, how on earth is T.rex going to reach the spines? The only way that would happen is if it got Spino on the ground (Which will be really difficult), or if the Spinosaurus is so stupid it basically presents itself as a tasty snack (Which is not gonna happen.).

16 tons seems to be too for a biped.
And yet 20 tons seems appropriate for the largest mosasaurs, animals that were not only shorter than spinosaurus in length, but also MUCH more slender. I think at least 16 tons seems reasonable.
You can not compare the two animals. The mosasaurs lived in water, where it is easier to support its own weight. By the same reasoning, Supersaurus is slighty less than 200 tons, since it was longer than the blue whale. I think that Spinosaurus is around 12 tons.
What? Spinosaurus is about 16 m-17 m long and blue whales are around 25-30 m long.
Additionally they don't average anywhere near 200 tons. The largest specimen on record weighed around 190 t, but she was approximately 40 t heavier than what is considered to be a "typical" large individual.
I said Supersaurus not Spinosaurus. Supersaurus was 35m long, even more than Blue Whale, wich is 30m. I don't mean the average, but the max weigth.
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SpinoInWonderland
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Dinosaur Planet
Jul 4 2013, 04:14 AM
Toxic Frog
Jul 4 2013, 04:08 AM
Dinosaur Planet
Jul 4 2013, 04:01 AM
Godzillasaurus
Jul 2 2013, 03:09 AM
Scipionyx
Jul 1 2013, 10:36 PM
DarkGricer
Jun 23 2013, 11:20 AM
Super Kaizer Ghidorah
Jun 20 2013, 11:11 AM
Posted Image

Here's your winner!



Tyrannosaurus weighs up to 7 tons. But some exceed 9 tons
Spino is 10-12 tons. Max 14 tons.

Tyrannosaurus has a better bite and sharp foot claws sharper and longer than spino's, His head has lots of muscle too. Spino has a vulnerable area other than the neck, the spines!
Lets see what of this post is true/relevant:

1: T.rex has a better bite.
2: Weight, mostly.
3: How about nothing else?

9 tons for T.rex is kinda pushing it, especially seeing as most of the "Bigger than Sue" Rexes where overestimated.
Maximum of 14 tons for Spino is quite light for a Theropod that large. An 18 meter Spino would probably be around 16 tons.
Footclaws? Please. First of all, Spino's footclaws haven't been found. And if we find them, they'll probably be larger than T.rex's. Second, These are multi-ton Theropods. They're not gonna be kicking each other. The only way the footclaws can be used is if one knocks the other on the ground, in which case it would already be pretty much over for the Dinosaur now on the ground, whether it's opponent has footclaws or not. Not to mention, we both know who is most likely to knock it's opponent on the ground. If you don't, here's a hint: It's really frickin huge.
A more muscular head? Yes, due to it's larger jaw muscles, which is also covered by the better bite thing.
Lastly, the spines are not a weakness. T.rex can hit them all it likes, Spino isn't gonna die from breaking them. The only thing that will happen is it getting hurt in a similar way you'd get hurt if you broke your tailbone. Not to mention, how on earth is T.rex going to reach the spines? The only way that would happen is if it got Spino on the ground (Which will be really difficult), or if the Spinosaurus is so stupid it basically presents itself as a tasty snack (Which is not gonna happen.).

16 tons seems to be too for a biped.
And yet 20 tons seems appropriate for the largest mosasaurs, animals that were not only shorter than spinosaurus in length, but also MUCH more slender. I think at least 16 tons seems reasonable.
You can not compare the two animals. The mosasaurs lived in water, where it is easier to support its own weight. By the same reasoning, Supersaurus is slighty less than 200 tons, since it was longer than the blue whale. I think that Spinosaurus is around 12 tons.
What? Spinosaurus is about 16 m-17 m long and blue whales are around 25-30 m long.
Additionally they don't average anywhere near 200 tons. The largest specimen on record weighed around 190 t, but she was approximately 40 t heavier than what is considered to be a "typical" large individual.
I said Supersaurus not Spinosaurus. Supersaurus was 35m long, even more than Blue Whale, wich is 30m. I don't mean the average, but the max weigth.
Your reasoning is flawed. Blue whales are much bulkier than Supersaurus. Spinosaurus is much bulkier than any mosasaur.
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Shaochilong
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Dinosaur Planet
Jul 4 2013, 04:14 AM
Toxic Frog
Jul 4 2013, 04:08 AM
Dinosaur Planet
Jul 4 2013, 04:01 AM
Godzillasaurus
Jul 2 2013, 03:09 AM
Scipionyx
Jul 1 2013, 10:36 PM
DarkGricer
Jun 23 2013, 11:20 AM
Super Kaizer Ghidorah
Jun 20 2013, 11:11 AM
Posted Image

Here's your winner!



Tyrannosaurus weighs up to 7 tons. But some exceed 9 tons
Spino is 10-12 tons. Max 14 tons.

Tyrannosaurus has a better bite and sharp foot claws sharper and longer than spino's, His head has lots of muscle too. Spino has a vulnerable area other than the neck, the spines!
Lets see what of this post is true/relevant:

1: T.rex has a better bite.
2: Weight, mostly.
3: How about nothing else?

9 tons for T.rex is kinda pushing it, especially seeing as most of the "Bigger than Sue" Rexes where overestimated.
Maximum of 14 tons for Spino is quite light for a Theropod that large. An 18 meter Spino would probably be around 16 tons.
Footclaws? Please. First of all, Spino's footclaws haven't been found. And if we find them, they'll probably be larger than T.rex's. Second, These are multi-ton Theropods. They're not gonna be kicking each other. The only way the footclaws can be used is if one knocks the other on the ground, in which case it would already be pretty much over for the Dinosaur now on the ground, whether it's opponent has footclaws or not. Not to mention, we both know who is most likely to knock it's opponent on the ground. If you don't, here's a hint: It's really frickin huge.
A more muscular head? Yes, due to it's larger jaw muscles, which is also covered by the better bite thing.
Lastly, the spines are not a weakness. T.rex can hit them all it likes, Spino isn't gonna die from breaking them. The only thing that will happen is it getting hurt in a similar way you'd get hurt if you broke your tailbone. Not to mention, how on earth is T.rex going to reach the spines? The only way that would happen is if it got Spino on the ground (Which will be really difficult), or if the Spinosaurus is so stupid it basically presents itself as a tasty snack (Which is not gonna happen.).

16 tons seems to be too for a biped.
And yet 20 tons seems appropriate for the largest mosasaurs, animals that were not only shorter than spinosaurus in length, but also MUCH more slender. I think at least 16 tons seems reasonable.
You can not compare the two animals. The mosasaurs lived in water, where it is easier to support its own weight. By the same reasoning, Supersaurus is slighty less than 200 tons, since it was longer than the blue whale. I think that Spinosaurus is around 12 tons.
What? Spinosaurus is about 16 m-17 m long and blue whales are around 25-30 m long.
Additionally they don't average anywhere near 200 tons. The largest specimen on record weighed around 190 t, but she was approximately 40 t heavier than what is considered to be a "typical" large individual.
I said Supersaurus not Spinosaurus. Supersaurus was 35m long, even more than Blue Whale, wich is 30m. I don't mean the average, but the max weigth.
Oh, my mistake lol
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Jinfengopteryx
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Toxic Frog
Jul 4 2013, 04:08 AM
The largest specimen on record weighed around 190 t, but she was approximately 40 t heavier than what is considered to be a "typical" large individual.
Typical blue whales don't weigh 150 t.
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