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| Spinosaurus aegyptiacus v Tyrannosaurus rex | |
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| Tweet Topic Started: Jan 7 2012, 02:16 AM (459,292 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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| Godzillasaurus | Jan 10 2013, 07:24 AM Post #1336 |
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Reptile King
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Or maybe he will throw us a curve-ball and claim himself to be 25 or something. |
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| Black Ice | Jan 10 2013, 07:27 AM Post #1337 |
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Drom King
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That a broly reference? |
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| Godzillasaurus | Jan 10 2013, 07:27 AM Post #1338 |
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Reptile King
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What? No. |
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| Black Ice | Jan 10 2013, 07:28 AM Post #1339 |
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Drom King
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Well cause broly did claim he was like 27 and used to act like dinosaur. |
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| Carcharadon | Jan 10 2013, 08:06 AM Post #1340 |
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Shark Toothed Reptile
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dinosaur sounds like hes no older than 8, and he just got his ass handed to him |
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| Black Ice | Jan 10 2013, 08:08 AM Post #1341 |
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Drom King
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If that's true don't you all feel stupid for picking on him? |
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| Godzillasaurus | Jan 10 2013, 08:57 AM Post #1342 |
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Reptile King
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These little stunts that he has been pulling off should be in the Spam Zone. Anything that is not in the general discussion section should be serious. He does not seem to show any sort of intellect. Now, if he is just a kid, I think that maybe we could give him a little time to grow up and become brainy about animals, and then let him back on the forum. I am not saying that we should ban him, just that maybe we could put him "on hold" for a while until he starts acting a little bit serious. However, my number 1 bet is that he is a good-ole troll. |
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| dinosaur | Jan 10 2013, 12:27 PM Post #1343 |
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Heterotrophic Organism
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Don't feel stupid. Pick on me as much as u guys want. I know u guys think in very fanboyish Or stupid. |
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| Black Ice | Jan 10 2013, 12:29 PM Post #1344 |
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Drom King
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I actually have no problem with you. |
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| dinosaur | Jan 10 2013, 12:40 PM Post #1345 |
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Heterotrophic Organism
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R u sure?
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| Black Ice | Jan 10 2013, 12:46 PM Post #1346 |
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Drom King
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Ya. |
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| dinosaur | Jan 10 2013, 12:56 PM Post #1347 |
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Heterotrophic Organism
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Thanks black ice. I feel much better now.
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| Black Ice | Jan 10 2013, 01:14 PM Post #1348 |
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Drom King
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Sure thing bro. |
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| TheROC | Jan 10 2013, 01:25 PM Post #1349 |
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Herbivore
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This is a...very strange thread the past few pages. |
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| Black Ice | Jan 10 2013, 01:32 PM Post #1350 |
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Drom King
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^ ikr |
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