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| Spinosaurus aegyptiacus v Tyrannosaurus rex | |
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| Tweet Topic Started: Jan 7 2012, 02:16 AM (459,085 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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| zergthe | Apr 3 2017, 01:33 AM Post #4441 |
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Kleptoparasite
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It just makes it all the better. C'mon, it was pretty funny. |
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| Jinfengopteryx | Apr 3 2017, 04:47 AM Post #4442 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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You could at least take another link. Or else vary it, like making up some fake paper title as the link text.
Edited by Jinfengopteryx, Apr 3 2017, 04:48 AM.
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| zergthe | Apr 3 2017, 05:47 AM Post #4443 |
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Kleptoparasite
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I'll do that next year. Thanks for the ideas.BUAHAHAHAHAHAHA |
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| Ceratodromeus | Apr 3 2017, 10:43 AM Post #4444 |
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Aspiring herpetologist
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The joke really is on you if you clicked the link every single time |
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| Jinfengopteryx | Apr 3 2017, 06:34 PM Post #4445 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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I just wanted to see if you at least display sone creativity. It's not like it surprised me. Or that I thought these links were real. |
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| Ceratodromeus | Apr 3 2017, 10:30 PM Post #4446 |
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Aspiring herpetologist
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Nope
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| SquamataOrthoptera | Apr 3 2017, 11:00 PM Post #4447 |
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15 year old keyboard warrior!
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Lol no way to lazy for that. |
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| Thalassophoneus | Apr 4 2017, 12:52 AM Post #4448 |
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Pelagic Killer
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I saw just one of the links. I was like "oooh, OK, let's look at this source saying that T-Rex had the bite force of a Megalodon" and then "oh, OK, it was an April Fools joke". |
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| SETA222 | Apr 4 2017, 01:04 AM Post #4449 |
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Omnivore
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But this one in particular has some scientist argumenting in favour. It's a really crazy theory that the jaws of T-rex were actually much better adapted to bite force hard than previously thought, you can check it here from Nat Geo: http://news.nationalgeographic.com/news/2017/120228-t-rex-bite-stronger-Megalodon-shame-letters-dinosaurs/ |
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| SquamataOrthoptera | Apr 4 2017, 01:18 AM Post #4450 |
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15 year old keyboard warrior!
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gud job lad |
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| Jinfengopteryx | Apr 4 2017, 03:42 AM Post #4451 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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Someone took my "fake title" advice seriously. Well done! |
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| Thalassophoneus | Apr 4 2017, 04:58 AM Post #4452 |
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Pelagic Killer
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The joke is far more expectable when it happens again. |
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| Ceph | Apr 4 2017, 08:54 AM Post #4453 |
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Piscivore
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Great joke guys. Got love Rick Astley. I do have to express a bit of concern that this may escalate into a major influx of fake links. Let's not get carried away please. |
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| Jinfengopteryx | Apr 4 2017, 06:07 PM Post #4454 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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Well, April Fool's day is over, so I hope this will stop and not become the next "carnivora memes". |
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| zergthe | Apr 4 2017, 11:33 PM Post #4455 |
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Kleptoparasite
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Don't worry; I'll only troll like this on April Fools. Because April Fools. Rerouting this to the 2nd most popular matchup on Carnivora. |
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I'll do that next year. Thanks for the ideas.





2:22 AM Jul 14