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Spinosaurus aegyptiacus v Tyrannosaurus rex
Topic Started: Jan 7 2012, 02:16 AM (459,227 Views)
Wolf Eagle
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M E G A P H Y S E T E R
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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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Shark Toothed Reptile
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dinosaur
Mar 22 2013, 06:06 AM
Dark allosaurus
Mar 22 2013, 05:46 AM
dinosaur
Mar 21 2013, 01:47 AM
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Look at this skull!!! Really wimpy and means Nothing! It's all dumb stuff! A host, a con!!! A FRONT!!!
Now thats just hipposhit.
Can't u say anything else but shit?
Yes i definetly can.

Your arguments against spinosaurus are fucking retarded, spino's skull is so much stronger than what you think, your just another fucktard who beloves t.rex/hates spinosaurus.
Edited by Carcharadon, Mar 22 2013, 07:30 AM.
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dinosaur
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Dog
Mar 22 2013, 06:18 AM
dinosaur
Mar 22 2013, 04:10 AM
Dog
Mar 21 2013, 05:25 AM
dinosaur
Mar 21 2013, 01:47 AM
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Look at this skull!!! Really wimpy and means Nothing! It's all dumb stuff! A host, a con!!! A FRONT!!!
I see nothing wrong with that skull, like Dinopithecus said. But spinosaurus on the other hand, is bigger and can knock the tyrannosaurus over.
I highly doubt that. Tyrannosaurus will knock spino first, causing spino to roll over, breaking its back and die.
Tyrannosaurus is the more skilled and experienced fighter.
Um, excuse me. But the spino is twice the rex's size and is more likely to knock the tyrannosaurus over, then step on the rex.
No no no no.

T.rex 9t
Spinosaurus 15t

It is not twice the size at all. I do not consider it. Besides t.rex has a bulkier body, better weapons, and it is the more skilled and experienced fighter.
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Jinfengopteryx
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Both weights (9 and 15 t) are probably too much, at least in my opinion. As for 9 t, I have said this enough times and I don't believe Spinosaurus reached the needed length for 15 t, as Suchomimus seems to have a proportionally larger skull than I tought, but I will not discuss with you.
Edited by Jinfengopteryx, Mar 22 2013, 07:36 AM.
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Carcharadon
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A 9 ton t.rex is fat
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dinosaur
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Dark allosaurus
Mar 22 2013, 07:35 AM
A 9 ton t.rex is fat
2 ton Allosaurus is fat.

Conservative

Allosaurus 1.5 tons
T.rex 7 tons

Max

Allosaurus 2
Tyrannosaurus 9
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DarkGricer
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Allosaurus is 9 meters long, if not more. A 2 ton individual isn't fat. Also, T.rex was more like 6-7 tons, while Spino was more like 12-14 tons.


Also, if you use the largest estimated for T.rex, why don't you use the 21 ton estimate for Spino? Who doesn't want a "Clash of the obese"?

Also, you seem to think that Spino is all about biting. Spinosaurus has claws and weight as well. Would you like the have a 13 ton animal smash into you?
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Archipithecus
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I think that most huge theropods would stay away from each other, and when they clashed, theyed display instead of fight. They could just cause to much damage to each other
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Ausar
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Bandog
Mar 22 2013, 07:12 AM
Lord of the Allosaurs
Mar 22 2013, 12:25 AM
Bandog
Mar 21 2013, 05:38 AM
Dinopithecus
Mar 21 2013, 04:39 AM
dinosaur
Mar 21 2013, 01:47 AM
Posted Image

Look at this skull!!! Really wimpy and means Nothing! It's all dumb stuff! A host, a con!!! A FRONT!!!
I don't know about you, but I don't see what's so bad about the skull of Spinosaurus.
Minimal area for muscle attachment, teeth ill designed to kill large prey, comparably gracile and flimsy structure?
The skull of spinosaurus is not adapted to take on anything close to the size of trex. If spinosaurus is too win it should keep its skull away from the head of Rex because I seriously doubt its skull could withstand trex' bite.
No modern felid has serrated teeth, and they are perfectly adapted for killing prey bigger than themselves. What is more, a few including lynx kill with bites to the neck.
Its skull is very crocodile-like, and it isn't really how broad the jaws are that determines bite force so much as it is proportionate length. Spinosaurus has a stronger bite force than any carcharodontosaurid, and those conical teeth are deeply rooted and well-adapted for stabbing and puncturing flesh. Tyrannosaurus undeniably has a far stronger bite, but to call Spinosaurus' skull a "bad joke" in comparrison is quite fanboyish.
Hence why I didn't call it a bad joke. It's teeth aren't even comparable to cats. The short, broad skull of a cat aids its enlarged canine teeth to dispatch prey. The long, thin snout of spinosaurus aids its mobility and the uniformly sized teeth (compared to cats) are suited to catch swift moving prey. As far as inter-theropod fights are concerned, its all but useless.
I think he was referring to bone crusher's post saying Spinosaurus' skull was a bad joke.
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dinosaur
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DarkGricer
Mar 22 2013, 08:07 AM
Allosaurus is 9 meters long, if not more. A 2 ton individual isn't fat. Also, T.rex was more like 6-7 tons, while Spino was more like 12-14 tons.


Also, if you use the largest estimated for T.rex, why don't you use the 21 ton estimate for Spino? Who doesn't want a "Clash of the obese"?

Also, you seem to think that Spino is all about biting. Spinosaurus has claws and weight as well. Would you like the have a 13 ton animal smash into you?
Well, if I were t.rex, I would use my bone crunching teeth, my battering RAM head, my Sharp and longer foot claws, my tail, and my skills and fighting experience
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Carcharadon
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dinosaur
Mar 22 2013, 07:42 AM
2 ton Allosaurus is fat.

Conservative

Allosaurus 1.5 tons

A 2 ton allosaurus is not fat at all
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DarkGricer
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dinosaur
Mar 22 2013, 10:34 AM
DarkGricer
Mar 22 2013, 08:07 AM
Allosaurus is 9 meters long, if not more. A 2 ton individual isn't fat. Also, T.rex was more like 6-7 tons, while Spino was more like 12-14 tons.


Also, if you use the largest estimated for T.rex, why don't you use the 21 ton estimate for Spino? Who doesn't want a "Clash of the obese"?

Also, you seem to think that Spino is all about biting. Spinosaurus has claws and weight as well. Would you like the have a 13 ton animal smash into you?
Well, if I were t.rex, I would use my bone crunching teeth, my battering RAM head, my Sharp and longer foot claws, my tail, and my skills and fighting experience
Let's see. Bone crushing teeth? Sure. Battering ram head? Since when is T.rex known to ram things? Foot claws? It cannot kick. If it did, it would fall over and probably break not only a few bones, but also a couple of laws of physics. Tail? T.rex's tail wan't made to swat things. It was made to be a counter balance. Skills and experience? Bones do not tell you if an animal has great fighting experience or not. Maybe Spinosaurs picked more fights that Tyrannosaurs.

So out of the 5 weapons you said T.rex had, it had only really had one of them.
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dinosaur
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DarkGricer
Mar 22 2013, 11:31 AM
dinosaur
Mar 22 2013, 10:34 AM
DarkGricer
Mar 22 2013, 08:07 AM
Allosaurus is 9 meters long, if not more. A 2 ton individual isn't fat. Also, T.rex was more like 6-7 tons, while Spino was more like 12-14 tons.


Also, if you use the largest estimated for T.rex, why don't you use the 21 ton estimate for Spino? Who doesn't want a "Clash of the obese"?

Also, you seem to think that Spino is all about biting. Spinosaurus has claws and weight as well. Would you like the have a 13 ton animal smash into you?
Well, if I were t.rex, I would use my bone crunching teeth, my battering RAM head, my Sharp and longer foot claws, my tail, and my skills and fighting experience
Let's see. Bone crushing teeth? Sure. Battering ram head? Since when is T.rex known to ram things? Foot claws? It cannot kick. If it did, it would fall over and probably break not only a few bones, but also a couple of laws of physics. Tail? T.rex's tail wan't made to swat things. It was made to be a counter balance. Skills and experience? Bones do not tell you if an animal has great fighting experience or not. Maybe Spinosaurs picked more fights that Tyrannosaurs.

So out of the 5 weapons you said T.rex had, it had only really had one of them.
Tyrannosaurus had a skull to ram. spino doesn't
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Jinfengopteryx
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DarkGricer
Mar 22 2013, 08:07 AM
Also, if you use the largest estimated for T.rex, why don't you use the 21 ton estimate for Spino? Who doesn't want a "Clash of the obese"?
I know that 9 t is a lot, but it is by far not as ridiculous as 21 t. That estimate is based on the assumption that Spinosaurus had the same built as a 9 t T-rex, as the method was to find an allometric skull relationship, what applies to all theropods.
Therefore 9 t for T-rex can't be compared with that, as it is far less ridiculous than 21 t for Spinosaurus. The really most ridiculous estimate for Tyrannosaurus is actually 18 t, that was a super fat version in that study. 9 t was the minimum, filling the outline of an incorrectly mounted skeleton, where the ribs have increased the trunk volume. The 1,5 t estimate for Big Al has a similar error.
I can give you my opinion on the weight of Sue, if you want.

DarkGricer
(time=1363905427
Also, you seem to think that Spino is all about biting. Spinosaurus has claws and weight as well. Would you like the have a 13 ton animal smash into you?
1. Spinosaurus' length is still unknown (that's why I would like to wait to summer, until we can continue that, because there the new material is described) therefore it's weight too is.
2. The arms of Spinosaurus are too unknown, so we don't know how long they are, or how useful.
3. Theropod arms are generally placed quite low on the torso, so I don't think they were used in fights with other theropods (exept for maybe in Dromaeosaurs, as they seemingly had the widest range of movement, judging from the picture Verdugo has shown and what was often shown in the feline vs drom debates).
Edited by Jinfengopteryx, Mar 23 2013, 02:12 AM.
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Ausar
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dinosaur
Mar 22 2013, 01:22 PM
DarkGricer
Mar 22 2013, 11:31 AM
dinosaur
Mar 22 2013, 10:34 AM
DarkGricer
Mar 22 2013, 08:07 AM
Allosaurus is 9 meters long, if not more. A 2 ton individual isn't fat. Also, T.rex was more like 6-7 tons, while Spino was more like 12-14 tons.


Also, if you use the largest estimated for T.rex, why don't you use the 21 ton estimate for Spino? Who doesn't want a "Clash of the obese"?

Also, you seem to think that Spino is all about biting. Spinosaurus has claws and weight as well. Would you like the have a 13 ton animal smash into you?
Well, if I were t.rex, I would use my bone crunching teeth, my battering RAM head, my Sharp and longer foot claws, my tail, and my skills and fighting experience
Let's see. Bone crushing teeth? Sure. Battering ram head? Since when is T.rex known to ram things? Foot claws? It cannot kick. If it did, it would fall over and probably break not only a few bones, but also a couple of laws of physics. Tail? T.rex's tail wan't made to swat things. It was made to be a counter balance. Skills and experience? Bones do not tell you if an animal has great fighting experience or not. Maybe Spinosaurs picked more fights that Tyrannosaurs.

So out of the 5 weapons you said T.rex had, it had only really had one of them.
Tyrannosaurus had a skull to ram. spino doesn't
IMO, if it tried ramming an opponent with its skull, it would be an inefficient attack. If anything, I think it might be more harmful to the tyrannosaur because it could be potentially disoriented for a good amount of time.
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Jinfengopteryx
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Actually, Tyrannosaurus skull could absorb a lot of stress, due to it's built (the bones aren't very well connected).
http://rspb.royalsocietypublishing.org/content/271/1547/1451.full.pdf
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