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Spinosaurus aegyptiacus v Tyrannosaurus rex
Topic Started: Jan 7 2012, 02:16 AM (459,369 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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I thought Spinosaurus was only up to 17 m according to Planet Dinosaur...
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Deleted User
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Neither they never met but jurassic Park showed spino was stronger.
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Superpredator
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Pseudomys
Aug 23 2012, 09:59 AM
Neither they never met but jurassic Park showed spino was stronger.
Really, JP as a source?
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7Alx
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Herbivore
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This is reason why don't use JP 3 for reference.

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7Alx
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Herbivore
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Especially part in 1:10-1:25
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theropod
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Stop citing documentaries. Scaring off isn´t the same, but a documentary simply is no reliable source of information at all. if some TV show showed a Spinosaurus interacting with a Tyrannosaurus, this is enough of a proof that it´s BS. 14m was by no means T. rex average, there is only one individual that might have reached that lenght, and apart from it none can be reliably confirmed to even be larger than Sue.
Edited by theropod, Aug 23 2012, 07:32 PM.
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theropod
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this might help judging the outcome of the fight: http://carnivoraforum.com/single/?p=8355509&t=9390966
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Superpredator
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Black Ice
Aug 22 2012, 06:41 AM
In a fight t rex would destroy spinosaurus
How? Spinosaurus was taller, heavier, more powerful, had usable arms with big claws and had a decent bite.
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theropod
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Superpredator
Aug 23 2012, 08:36 PM
Black Ice
Aug 22 2012, 06:41 AM
In a fight t rex would destroy spinosaurus
How? Spinosaurus was taller, heavier, more powerful, had usable arms with big claws and had a decent bite.
Don´t take such comments seriously, they are derived from missing knowledge on the subject and too little time to have a closer look at the combatants. This actually only shows that most people thing T. rex had a stronger bite, and it was the king of the dinosaurs so it wins. That´s just as bad as saying "spino won in JP, so it wins"
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SpinoInWonderland
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hello guys, I'm back!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

TheROC's size comparison shows us the obvious winner, which is Spinosaurus. It's beyond me why people continue to vote for T. rex
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7Alx
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You shouldn't back. Of course I am not angry of people who say Spino would win, if they have good arguments and don't hate other dinosaurs like Tyrannosaurus. But u hate Tyrannosaurus and haters like you shouldn't back. Of course you are annoying.
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Godzillasaurus
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jj5893
Aug 22 2012, 06:17 AM
Actually I saw a documentary of spino scaring off an adult trex not lieing. Spinosaurus is heavier, longer, taller and bigger jaws.
How could a spinosaurus scare off an adult t-rex? They didn't live in the same place, let alone the same time period.
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Jinfengopteryx
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Dark allosaurus
Aug 22 2012, 06:51 AM
I thought Spinosaurus was only up to 17 m according to Planet Dinosaur...
Well, the tail was too short in their figure:
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Jinfengopteryx
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theropod
Aug 23 2012, 09:50 PM
Superpredator
Aug 23 2012, 08:36 PM
Black Ice
Aug 22 2012, 06:41 AM
In a fight t rex would destroy spinosaurus
How? Spinosaurus was taller, heavier, more powerful, had usable arms with big claws and had a decent bite.
Don´t take such comments seriously, they are derived from missing knowledge on the subject and too little time to have a closer look at the combatants. This actually only shows that most people thing T. rex had a stronger bite, and it was the king of the dinosaurs so it wins. That´s just as bad as saying "spino won in JP, so it wins"
Well, Black Ice isn't a dummy, he's able to give logical arguments, as you can see in other debates.
Edited by Jinfengopteryx, Aug 24 2012, 12:15 AM.
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theropod
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I know, but he obviously didn´t really think about this fight.
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