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| Spinosaurus aegyptiacus v Tyrannosaurus rex | |
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| Tweet Topic Started: Jan 7 2012, 02:16 AM (459,213 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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| theropod | May 26 2013, 12:58 AM Post #2521 |
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palaeontology, open source and survival enthusiast
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We're running in circles ![]() Seriously, good joke. For a moment I was left in awe... What is your opinion on this fight? |
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| Ripjaw | May 29 2013, 12:59 PM Post #2522 |
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Unicellular Organism
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Spino would win. Its arms are much longer and those claws are the size of a machete. If you watch Monsters Resurrected "Biggest Killer Dino) A Spino kills a Carcharadontosaurus with one blow to the head. |
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| DarkGricer | May 29 2013, 11:57 PM Post #2523 |
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Omnivore
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Who are you, Dinosaur's alter ego? Seriously though. Monsters Resurrected is not a good source. Spino's arms would have to be really, really muscular in order to kill a Carcharodontosaurus with one blow to the head. Hint: They weren't. Most of us seem to agree that Spinosaurus wins this fight. But we don't say so because of how overpowered it was in Monsters Resurrected. |
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| Godzillasaurus | May 30 2013, 12:26 AM Post #2524 |
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Reptile King
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Well the arms of spinosaurus were still very powerful. And I don't see how their claws couldn't any good damage to the t-rex. As well, its jaws were not as weak as you think. Edited by Godzillasaurus, May 30 2013, 12:26 AM.
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| DarkGricer | May 30 2013, 01:29 AM Post #2525 |
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Omnivore
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I know. I never said that it's arms or jaws where weak. I just said that it's arms wouldn't be killing a Carcharodontosaurus with a single blow to the head. |
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| theropod | May 30 2013, 07:51 PM Post #2526 |
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palaeontology, open source and survival enthusiast
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The arms were certainly muscular; http://archosaurmusings.files.wordpress.com/2012/05/suchomimumarms052212.jpg?w=500&h=437 http://archosaurmusings.files.wordpress.com/2012/05/suchomimusarmdisplay052212.jpg?w=500&h=236 The bones are massive, with large, robust attachment crests. But I highly doubt they were suited for swiping, let alone killing with swipes. Mega beasts is an extremely bad source among extremely bad sources. Yes, the claws were huge, no question, but not sharp, rather for gripping and holding. That's what T. rex woud have to be wary of, not a swipe. |
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| retic | Jun 1 2013, 05:59 AM Post #2527 |
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snake and dinosaur enthusiast
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spino could still leave deep wounds with those claws. |
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| terminator | Jun 2 2013, 06:10 PM Post #2528 |
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Autotrophic Organism
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It would of been a close fight but I chose trex, simply because of its tremendous bite force. However the spinosaurus must of been more powerful due to its huge weight (11tons). It would collapse to the ground if it was not strong enough to support that much mass. And it's claws would of been useful when deflecting trexs attacks. |
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| Vivyx | Jun 3 2013, 01:12 AM Post #2529 |
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Felines, sharks, birds, arthropods
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Yeah, and I will be like: ![]() And I will probably be like this: http://www.youtube.com/watch?feature=player_detailpage&v=oheuQfHUf2s Edited by Vivyx, Jul 14 2013, 02:12 AM.
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| Jinfengopteryx | Jun 3 2013, 01:25 AM Post #2530 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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He is only one example of a YT fanboy. Generally, this forum is completely different from YT, because there, you can find such people under pretty much any video including Tyrannosaurus and Spinosaurus or another theropod.
Edited by Jinfengopteryx, Jun 3 2013, 01:26 AM.
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| Vivyx | Jun 9 2013, 05:15 AM Post #2531 |
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Felines, sharks, birds, arthropods
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^I agree. |
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| Big G | Jun 11 2013, 07:11 AM Post #2532 |
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Herbivore
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I changed my mind. Spinosaurus to 16-18 meters could win, but lately I am becoming convinced of Spinosaurus 45-47 ft. So, for now, 50/50. |
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| theropod | Jun 12 2013, 12:57 AM Post #2533 |
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palaeontology, open source and survival enthusiast
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^And why? Even the holotype of Spinosaurus has vertebrae nearly twice as long as Baryonyx walkeri. The range of 45-47ft for MNSM V4047 entirely bases on unrelated animals. |
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| Big G | Jun 12 2013, 12:58 AM Post #2534 |
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Herbivore
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Not necessarily. If you rely on Irritator with a skull 1.5 meters for Spinosaurus, you get about 46 ft. Edited by Big G, Jun 12 2013, 12:59 AM.
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| DarkGricer | Jun 12 2013, 01:05 AM Post #2535 |
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Omnivore
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I'm fairly sure Spino' skull was more like 1.7 meters. |
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