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Spinosaurus aegyptiacus v Tyrannosaurus rex
Topic Started: Jan 7 2012, 02:16 AM (459,082 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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Ausar
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Canadianwildlife
Oct 17 2017, 04:44 PM
Holy crimes my old posts in this thread were horrendous. I was such a noob then. I just read back through them and couldn't bear to even read all of them. For me to post here would be suicide. I know nothing of the topic at hand. A lot of my posts on this forum were terrible, maybe not most but a lot. Well while I'm here, who does everyone think would win if I may ask such a question?
It's funny that you say this because the position you've argued back then actually turned out to be the reasonable one, now that we have more material from Spinosaurus.

Tyrannosaurus wins.
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Drift
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Ausar
Nov 21 2017, 02:03 AM
Canadianwildlife
Oct 17 2017, 04:44 PM
Holy crimes my old posts in this thread were horrendous. I was such a noob then. I just read back through them and couldn't bear to even read all of them. For me to post here would be suicide. I know nothing of the topic at hand. A lot of my posts on this forum were terrible, maybe not most but a lot. Well while I'm here, who does everyone think would win if I may ask such a question?
It's funny that you say this because the position you've argued back then actually turned out to be the reasonable one, now that we have more material from Spinosaurus.

Tyrannosaurus wins.
Agreed, There's a definite winner in this had they both met and it's undoubtedly Tyrannosaurus Rex.Also,congrats on all the idle conversations a select few resorted to in order to bump this thread for the three-hundredth pages. rolleyes
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Thalassophoneus
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Drift
Dec 8 2017, 01:41 AM
Ausar
Nov 21 2017, 02:03 AM
Canadianwildlife
Oct 17 2017, 04:44 PM
Holy crimes my old posts in this thread were horrendous. I was such a noob then. I just read back through them and couldn't bear to even read all of them. For me to post here would be suicide. I know nothing of the topic at hand. A lot of my posts on this forum were terrible, maybe not most but a lot. Well while I'm here, who does everyone think would win if I may ask such a question?
It's funny that you say this because the position you've argued back then actually turned out to be the reasonable one, now that we have more material from Spinosaurus.

Tyrannosaurus wins.
Agreed, There's a definite winner in this had they both met and it's undoubtedly Tyrannosaurus Rex.Also,congrats on all the idle conversations a select few resorted to in order to bump this thread for the three-hundredth pages. rolleyes
First, it's completely normal for the most famous dinosaur conflict ever to eventually reach 300 pages. Second, your continuous attempts to trigger me are completely pointless. I know that Tyrannosaurus wins.
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TheBatmeme368
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...Looks like everyone’s in agreement here, Tyrannosaurus wins. Its become increasingly difficult to construct an argument favouring Spinosaurus on land.

Also, hooray for 300 pages!
Edited by TheBatmeme368, Dec 8 2017, 06:34 AM.
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Migatte
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I’m a Spinosaurus and I can agree that most of the time on land the spinosaurine would lose to the tyrannosaurine, and jeebus 300 pages, not even the argument on Dinosaur Home was this large!
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Grimace
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Spinosaurus would roll like sonic the hedgehog and slice the t-rex in half using it's sail
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TheBatmeme368
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Grimace
Apr 27 2018, 02:36 PM
Spinosaurus would roll like sonic the hedgehog and slice the t-rex in half using it's sail
Of course, everybody knows that. rolleyes
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populator135
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The opinion of two dinosaur experts
https://www.youtube.com/watch?v=7IN_kjx0eNk
https://www.youtube.com/watch?v=8tFfnfJrhfA&t=1627s
In the second video his opinion is at 22:25
Edited by populator135, May 27 2018, 12:00 AM.
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Mammuthus
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Here is a comparison I made featuring the largest spinosaurus specimen known so far, and Stan the t-rex:
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I do strongly favour the tyrannosaurus in this matchup.

The only only advantage spinosaurus has are its forelimbs that have those large claws that could be used to deliver lacerations, as oppose to the t-rex who has far smaller forelimbs which aren't as impressive.

However its jaws are a massive disadvantage. Its long, narrow jaws just can't do as much damage to a similar sized theropod. The t-rex has jaws fit for dealing damage, and wrestling animals like a triceratops, if a spinosaurus attempted this it could ruin its jaw.

Not to mention that spinosaurus has a far longer, exposed neck, a good and open target for the t-rex to target.
Edited by Mammuthus, May 31 2018, 06:28 AM.
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Caius
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What's the range of motion of the arms? Would they even be able to reach anywhere vital at all? It doesn't look likely on Franoy's skeletals, maybe if it reared up to some degree but then it'd just be off balance and exposed
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Mammuthus
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Caius
May 31 2018, 05:33 AM
What's the range of motion of the arms? Would they even be able to reach anywhere vital at all? It doesn't look likely on Franoy's skeletals, maybe if it reared up to some degree but then it'd just be off balance and exposed
Which animal are you talking about?
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SuetheRex
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That is Stan? Jesus, imagine Trix, Samson or Sue...
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Caius
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I'm referring to Spinosaurus, Mammuthus. The arms of the rex are essentially useless in confrontations like these
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Ausar
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Actually (as some authors have suggested) I think there's some reason to think the forelimbs of Tyrannosaurus had some use in predation and combat with conspecifics (there are apparently specimens with evidence of manual claw injuries from other Tyrannosaurus). But honestly, you could ignore the forelimbs. The tyrannosaur has a vastly superior weapon to use and doesn't need its front limbs to win a fight anyway.
Edited by Ausar, Jun 1 2018, 08:50 AM.
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Mammuthus
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SuetheRex
May 31 2018, 04:22 PM
That is Stan? Jesus, imagine Trix, Samson or Sue...
Yeah they are both substantially larger than Stan, I will probably make a comparison with Sue actually.
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