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| Spinosaurus aegyptiacus v Tyrannosaurus rex | |
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| Tweet Topic Started: Jan 7 2012, 02:16 AM (459,207 Views) | |
| Wolf Eagle | Jan 7 2012, 02:16 AM Post #1 |
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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. ![]() 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).
Edited by Taipan, Apr 24 2015, 10:10 PM.
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| Shaochilong | Aug 17 2013, 01:25 AM Post #2611 |
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Herbivore
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Just ignore this chump. If you really think he's Dinosaur, report his posts and the admins will investigate.
Edited by Shaochilong, Aug 17 2013, 01:31 AM.
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| Jinfengopteryx | Aug 17 2013, 01:28 AM Post #2612 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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Please don't reply to him! |
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| Shaochilong | Aug 17 2013, 01:33 AM Post #2613 |
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Herbivore
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I stopped and edited my post. I'm putting him on my ignore list right now, and asking the staff to check his account just to be sure he's not you-know-who (and I don't mean Voldemort). Edited by Shaochilong, Aug 17 2013, 01:34 AM.
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| thesporerex | Aug 17 2013, 02:54 AM Post #2614 |
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Kleptoparasite
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what if this guy... IS VOLDERMORT!!?
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| Vivec | Aug 17 2013, 03:06 AM Post #2615 |
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Canid and snake enthusiast.
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Course he isn't, him and his duplicate account ( mega t.rex the magnificent) were IP banned ages ago. |
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| Jinfengopteryx | Aug 17 2013, 03:17 AM Post #2616 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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It is possible to change the IP after some time. |
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| Ausar | Aug 17 2013, 04:46 AM Post #2617 |
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Xi-miqa-can! Xi-miqa-can! Xi-miqa-can!
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I'm sorry if I'm forgetting something, but is there really anything else besides the "foot claws" argument that suggests Super Kaizer Ghidorah is synonymous with dinosaur? Sure, they may be trolls, but that's almost all there is to it, unless I either missed or forgot (or both) something? |
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| Shaochilong | Aug 18 2013, 01:16 AM Post #2618 |
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Herbivore
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He also supports the same animals (Deinosuchus and Tyrannosaurus), has the same arguments (the "largest crocodilian" argument for Deinosuchus, the "foot claws and 9 tons" argument for Tyrannosaurus) and the same choice of words. I'm not saying he is Dinosaur, I'm saying I have a suspicion that he may be. |
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| Ausar | Aug 18 2013, 08:18 AM Post #2619 |
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Xi-miqa-can! Xi-miqa-can! Xi-miqa-can!
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I can name at least one difference. Dinosaur gave Deinosuchus vs. T.rex a tie (50/50) oddly enough (Source). It was probably the only animal he didn't give T.rex the majority over. Super Kaizer Ghidorah on the other hand, favored Deinosuchus over T.rex. But that's just one difference and perhaps dinosaur may have changed his opinion (though, if he did, I think it'd be more likely he'd favor T.rex). Edited by Ausar, Aug 18 2013, 08:27 AM.
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| Akito Kinomoto | Aug 24 2013, 12:09 PM Post #2620 |
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Unicellular Organism
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Realistically, T-Rex and Spinosaurus' meeting would likely result in the former walking away. There's no fossil evidence to suggest T-Rex dealt with predators larger than itself while Spino has dealt with Carcharodontosaurus who was roughly in T-Rex's size range. But in a hypothetical fight, Spino's arms are its best weapons while T-Rex has its jaws. Spino would only have to drive away T-Rex with its slashes while T-Rex has to get in range with its jaws and deliver its bone-crushing bite. But if it does, Spino is likely dead. Spino's offense has more winning power but T-Rex has more killing power. Carnivores don't immediately go for a death match and I'm sure it's no different here. T-Rex walks away from the larger opponent while Spino shouldn't want any of its opponents jaws. Question though: Would a Spino recognize that a T-Rex isn't a Carch? |
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| SpinoInWonderland | Aug 24 2013, 03:42 PM Post #2621 |
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The madness has come back...
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Finally, an answer that does not involve Tyrannosaurus attacking like some fearless warrior. Tyrannosaurus would likely get intimidated by opponents larger than it, whether it be giant sauropods, supermassive ornithopods, or super megalosauroids. Probably, probably not, but it wouldn't really make much difference, as the same fighting style it probably would have used would have been a very general one that isn't specialized towards carnosaurs. It had to deal with Bahariasaurus too after all. Spinosaurus would have fought like a bear in my honest opinion, using a combination of sheer power and weaponry. Edited by SpinoInWonderland, Aug 24 2013, 03:50 PM.
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| thesporerex | Aug 24 2013, 04:18 PM Post #2622 |
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Kleptoparasite
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I agree with your second statement but your first statement is flawed, this is a hypothetical senario so it would be a death battle so t-rex would attack. like a fearsome warrior or not. I do agree that in confrintation T-rex would back down due to it being intimidated or driven off by spinosaurus's size and brute strength. |
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| SpinoInWonderland | Aug 24 2013, 04:38 PM Post #2623 |
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The madness has come back...
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Well, in nature, larger predators usually send smaller predators packing, and there is no rule that states that this is to be ignored in hypothetical battles, so I took that into account. Btw, even though I don't debate the end fight outcome itself anymore, I will still contribute when it comes to simply discussing their general attributes/traits. |
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| DarkGricer | Aug 24 2013, 04:55 PM Post #2624 |
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Omnivore
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Depends on what you mean with "best weapon". If you mean the one with the most killing power, than they'd be the jaws, not the claws. It's arms are it's best utility weapons, however. That depends on where it bites. There's a lot of things to bite on a Spinosaurus. The only areas where T.rex can bite for a quick kill are the head and the neck, which will probably be kept out of it's reach most of the time. |
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| Jinfengopteryx | Aug 24 2013, 06:33 PM Post #2625 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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If this doesn't get ignored, many matchups wouldn't work (like herbivore vs carnivore matchups, where the carnivore would get quite a huge advantage). |
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