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| Spinosaurus aegyptiacus v Tyrannosaurus rex | |
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| Tweet Topic Started: Jan 7 2012, 02:16 AM (459,080 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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| Mammuthus | Jun 2 2018, 01:46 AM Post #4501 |
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Proboscidean Enthusiast
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Ok here is the comparison with Sue as oppose to Stan:![]() Easy win for the t-rex. |
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| bone crusher | Jun 10 2018, 10:33 PM Post #4502 |
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Heterotrophic Organism
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T Rex easily wrecks Spino, just take a look at the 3d comparison that shows all angles of their respective build. You can see how much wider and robust Rexy is, it's not an animal you wanna tackle head on with.![]() ![]() And check out the rest comparison of the big 4. https://www.artstation.com/artwork/QQDKL |
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| Mammuthus | Jun 11 2018, 06:59 AM Post #4503 |
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Proboscidean Enthusiast
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Jokes aside neat comparison, and yeah the t-rex wins with ease. Edited by Mammuthus, Jun 11 2018, 06:59 AM.
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| Ausar | Jun 11 2018, 10:52 AM Post #4504 |
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Xi-miqa-can! Xi-miqa-can! Xi-miqa-can!
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Those models, if accurate (which they seem to be; I'm no Scott Hartman or anything, but I can't find any flaws with them), really emphasize just how built like a tank Tyrannosaurus was. Yeesh.
Edited by Ausar, Jun 11 2018, 10:53 AM.
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| SuetheRex | Jun 11 2018, 08:17 PM Post #4505 |
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Unicellular Organism
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Tyrannosaurus Rex truly was the peak of an evolution path 160 millions of years long that had only one goal: To refine the art of hunting and killing. And T-rex combination of:size, physical power and a powerful set of senses along an advanced brain still is unmatched. |
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| Black Ice | Jun 11 2018, 11:00 PM Post #4506 |
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Drom King
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Remember when Spinosaurus used to be bipedal? Pepperidge Farm remembers. On a more serious note T. Rex could literally bulldoze over the Spinosaurus. This isn't even a fight anymore it's a blatant mismatch.
Edited by Black Ice, Jun 11 2018, 11:07 PM.
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| Ausar | Jun 11 2018, 11:54 PM Post #4507 |
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Xi-miqa-can! Xi-miqa-can! Xi-miqa-can!
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It still most likely was bipedal, just sayin'. Anyway, I agree. Also, I typed this while eating a Pepperidge Farm product lol. Edited by Ausar, Jun 11 2018, 11:57 PM.
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| joule-trix | Jun 27 2018, 10:49 PM Post #4508 |
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Unicellular Organism
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couldnt it be possible t.rex just bite one of the legs since its lower to the ground, and snap spinos leg? |
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