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| Spinosaurus aegyptiacus v Tyrannosaurus rex | |
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| Tweet Topic Started: Jan 7 2012, 02:16 AM (459,216 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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| Super Kaizer Ghidorah | May 14 2013, 05:39 AM Post #2476 |
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Autotrophic Organism
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T.rex wins for sure. I really love bone crunchers! |
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| theropod | May 14 2013, 06:16 AM Post #2477 |
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palaeontology, open source and survival enthusiast
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ignore the troll: http://carnivoraforum.com/home/?c=30&mid=3940286 |
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| retic | May 14 2013, 07:03 AM Post #2478 |
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snake and dinosaur enthusiast
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hyenas have stronger bites than lions but lions usually beat hyenas. |
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| Super Kaizer Ghidorah | May 15 2013, 04:48 AM Post #2479 |
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Autotrophic Organism
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So ur saying that the t.rex is a hyena and the spinosaurus is a lion? |
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| Super Kaizer Ghidorah | May 15 2013, 04:49 AM Post #2480 |
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Autotrophic Organism
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WHAT'S YOUR PROBLEM?! |
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| Super Kaizer Ghidorah | May 15 2013, 05:13 AM Post #2481 |
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Autotrophic Organism
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Spinosaurus may be strong but http://www.technologytell.com/gaming/files/2013/02/yoshi-birdo.jpg T.rex can drive cars! so? Show me another theropod that can do that! |
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| theropod | May 15 2013, 05:34 AM Post #2482 |
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palaeontology, open source and survival enthusiast
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Rotundonasalosaurus infantilis aka T. rex is my problem.
Someone who comes to a such thread saying "T. rex wins for sure. I really love bone crushers!" is a troll for me, I'm sorry if you don't think so but I hadn't really expected you to know that, otherwise why would you post spam like the above? |
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| retic | May 15 2013, 05:35 AM Post #2483 |
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snake and dinosaur enthusiast
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im just saying that bite force isn't everything. |
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| Super Kaizer Ghidorah | May 15 2013, 05:51 AM Post #2484 |
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Autotrophic Organism
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ok back to reality. T.rex's bite should produce superior damage to spinosaurus. |
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| MightyMaus | May 15 2013, 06:07 AM Post #2485 |
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Autotrophic Organism
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And Spinosaurus will crush Tyrannosaurus due to having a 8+ ton weight advantage. |
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| retic | May 15 2013, 08:12 AM Post #2486 |
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snake and dinosaur enthusiast
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i agree. spinosaurus would also destroy tyrannosaurus rex with its massive claws. |
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| theropod | May 15 2013, 10:09 PM Post #2487 |
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palaeontology, open source and survival enthusiast
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it would just topple it over. |
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| Jinfengopteryx | May 15 2013, 10:25 PM Post #2488 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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8 t is for sure not the minimum of a weight advantage. Than the minimum weight of Spinosaurus would be 14 t. Not that this is unlikely, but I wouldn't call that the minimum. It could aswell have weighed 11-12 t. |
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| Super Kaizer Ghidorah | May 16 2013, 12:32 AM Post #2489 |
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Autotrophic Organism
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11-12 tons huh? The same size as Deinosuchus! |
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| SpinoInWonderland | May 16 2013, 12:51 AM Post #2490 |
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The madness has come back...
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Nope. The largest specimens of Deinosuchus were estimated to be ~8.5 tonnes, and more common ones around ~2.3 tonnes... The largest Deinosuchus is in the same ballpark as the subadult Spinosaurus holotype IPHG 1912 in terms of mass. |
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