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Spinosaurus aegyptiacus v Tyrannosaurus rex
Topic Started: Jan 7 2012, 02:16 AM (459,109 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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Lukose
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SpinosaurusKing
Aug 3 2015, 10:36 AM
FireEel
Jan 7 2012, 11:01 PM
With the recent revisions to the max size of T.rex(from 7 tonnes > 9.5 tonnes or more), I give T.rex a very high chance of winning now.
Hey some of these facts are totally wrong! And by the way T-Rex is a little girl compared to Spinosaurus. Spino is the new and forever reigning king of the dinosaurs!!!
And yet you add zero reasoning to your accusations?

People that hitch onto an animal and continue to deny science just because it is their "favorite" are pretty pathetic.
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FishFossil
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Lukose
Aug 9 2015, 01:55 PM
SpinosaurusKing
Aug 3 2015, 10:36 AM
FireEel
Jan 7 2012, 11:01 PM
With the recent revisions to the max size of T.rex(from 7 tonnes > 9.5 tonnes or more), I give T.rex a very high chance of winning now.
Hey some of these facts are totally wrong! And by the way T-Rex is a little girl compared to Spinosaurus. Spino is the new and forever reigning king of the dinosaurs!!!
And yet you add zero reasoning to your accusations?

People that hitch onto an animal and continue to deny science just because it is their "favorite" are pretty pathetic.
Yep. And even so, why does it not being able to beat a tyrannosaurus in a PURELY HYPOTHETICAL fight change anything? Both animals were well adapted to their ecological niches. Tyrannosaurus was simply hunting game much closer to its size than spinosaurus. I'm not saying spinosaurus didn't have to tackle larger prey, I'm just saying it was perfectly fine, and well adapted to eat fish. And as for the "tiny fish" thing earlier, I wouldn't call a 25 foot onchopristis "small". Just a lot easier to kill.
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Jaws
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now that spino is 7 tonnes t rex wins 55/45
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Jaws
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SpinosaurusKing
Aug 3 2015, 10:36 AM
FireEel
Jan 7 2012, 11:01 PM
With the recent revisions to the max size of T.rex(from 7 tonnes > 9.5 tonnes or more), I give T.rex a very high chance of winning now.
Hey some of these facts are totally wrong! And by the way T-Rex is a little girl compared to Spinosaurus. Spino is the new and forever reigning king of the dinosaurs!!!
patetic fanboy


you are probably ursus panthera

fanboys are so pathetic
carnegie v spino=spino 65/35
stan v spino=50/50
sue v spino=t rex 70/30
USMP v spino= t rex 90/10
Edited by Jaws, Sep 30 2015, 12:54 PM.
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Jaws
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why isn't there like 2000+ pages here
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The supersaurus
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that's a bit too much!
oh by the way i'm new
Edited by The supersaurus, Oct 20 2015, 01:55 PM.
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Jaws
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SamuelwithDinos
Oct 20 2015, 01:52 PM
that's a bit too much!
oh by the way i'm new
Who do you think wins oh and welcome to carnivora
And if anyone knows who is paleosaurus?
Edited by Jaws, Oct 22 2015, 10:15 AM.
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DarkGricer
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I don't really know much about the whole Paleosaurus thing, but from what I've gathered he was a huge T.rex fanboy who assumed T.rex was a 16 meter giant, whilst all the other theropods where pathetic weaklings that where 12 meters or less.
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zergthe
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They aren't nessecarily weak, but they pale in comparison to Rexy.

JK, rolleyes I am not a Rex fanboy. However, a Tyrannosaurus WOULD win this fight. As long as the two carnivores don't run away from eachother to avoid too much injury. The Tyrannosaurus had almost 12,800 lbs of bite force. Spinosaurus didn't have a strong enough bite to fatally or even mortally wound a Tyrannosaurus if it went for the neck; Rexy here had one of the thickest skin around its neck. Don't forget the banana sized teeth. The claws of the Spinosaurus would probably give it the most trouble.
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Ausar
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Quote:
 
Rexy here had one of the thickest skin around its neck
How do you know that?
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Ceratodromeus
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Never understood why the comments of a child made three years ago are still pertinent to people discussing this topic. Nor the over reliance on a movie 14years old for their argument, but I guess that's just the sensible part of me?

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zergthe
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It would kinda have to be thick, so as to keep that massive head steady. If it had the neck of, say, a sauropod, the head would require much more effort to lift. Maybe...? Think about it.
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Grimace
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zergthe
Oct 22 2015, 11:39 AM
It would kinda have to be thick, so as to keep that massive head steady.
That's not how anatomy works at all.
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zergthe
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Like I said, maybe. I don't know anatomy very well, but it does sound reasonable.
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Grimace
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Head weight has literally nothing whatsoever to do with skin thickness.
Obviously it didn't have this, but tyrannosaurus could have had silky tissue paper thickness skin and it's head would have been supported just as well as it having 6 inch thich skin and a foot of blubber.
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