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| Spinosaurus aegyptiacus v Tyrannosaurus rex | |
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| Tweet Topic Started: Jan 7 2012, 02:16 AM (459,160 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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| Ceratodromeus | Mar 1 2014, 09:51 AM Post #3316 |
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Aspiring herpetologist
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? what crap would that be? |
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| Hatzegopteryx | Mar 1 2014, 09:55 AM Post #3317 |
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Unicellular Organism
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I don't think comparing prey is useful, even more when prey are unarmed. hose also aren't UFC fighters, they are different individuals of species that never dealt with eachother, so "skill" isn't that much of a thing. |
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| spinosaurus rex | Mar 1 2014, 09:59 AM Post #3318 |
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Carnivore
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1. the tyrannosaurus is 14 meters 2.it states the spinosaurus has a sail 3. it states spinosaurus sail can change colors 4.these massive theropods are somehow managing quick turns 5. it states the tyranosaur bites the signifigantly taller animals back 6. most rediculus of all, it states the tyrannosaurus lifts 9 tons IN THE AIR in its jaws. 7. the massive amounts of unproven ussumptions it's basiclly a bunch of unproven ussumptions that makes little to no sense Edited by spinosaurus rex, Mar 1 2014, 10:03 AM.
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| Carcharadon | Mar 1 2014, 10:04 AM Post #3319 |
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Shark Toothed Reptile
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The height numbers are also total BS. |
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| Arovinrac | Mar 1 2014, 10:05 AM Post #3320 |
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Herbivore
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I thought a T.Rex at the hip was around 3.5 metres not 6 metres |
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| Ceratodromeus | Mar 1 2014, 10:06 AM Post #3321 |
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Aspiring herpetologist
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*sigh* it's a creative writing piece, his interpretation.... so here we go:1. i believe a tyrannosaurus could max at 14 meters, possible.. 2. no evidence it wasn't a sail 3. probably his theory? 4. Large animals today are capable of quick turns.. 5. no evidence spinosaurus is signifigantly taller, at all. 6. i don't see any where it says tyrannosaurus lifts nine tons in it's jaws? |
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| Ceratodromeus | Mar 1 2014, 10:07 AM Post #3322 |
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Aspiring herpetologist
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B.S. how? proof? |
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| Hatzegopteryx | Mar 1 2014, 10:10 AM Post #3323 |
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Unicellular Organism
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1. Yes, while our largest specimen is ~12.3 metres. 2. Failure, it was a muscle ridge, a sail would be totally useless. 3. Baseless speculation as you can see. 4. A specimen at FMNH PR 2081 can't even turn 45 degrees in 2 seconds. 5. Oh jesus 6. In normal physics, its enlongated body would cause it to fall forwards, not hard to imagine 7. They hurt my brain I agree, it is a bunch of baseless speculations that make zero sense. Trusting such a source is ridiculous. |
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| Ceratodromeus | Mar 1 2014, 10:13 AM Post #3324 |
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Aspiring herpetologist
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i didn't ever state i 'trusted' the source? i merely put this up as an interpretation of what could happen. Did i come across a site of tyrannosaur haters or something?Give me proof it was a muscle ridge, or any of your other statements. then we will be in business. |
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| Hatzegopteryx | Mar 1 2014, 10:14 AM Post #3325 |
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Unicellular Organism
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1. That's baseless speculation, we have no evidence supporting it. 2. It had a muscle ridge, a sail is a totally different structure and it didn't need that. 3. That's not a theory, it's a baseless speculation. 4. But we don't have 7-8 ton theropods with enlongated bodies, the closest we have to that is the Elephant, which is a quadrupedal with wide front limbs and reduced rotational inertia. 5. Why would it target the back? It has a jaw to beware of. 6. Which is ridiculous if you ask me |
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| Hatzegopteryx | Mar 1 2014, 10:18 AM Post #3326 |
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Unicellular Organism
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No-one said you did, and if it isn't reliable, you don't need to bring it up. We don't hate tyrannosaurids, and if you looked at my favorite dinosaur list, you'd find yourself in a flawed attempt of using that as a way to support your argument (it has no correlation to it if you wanna know). To start off, why don't you give me proof that it was a sail, rather than a muscle ridge? A sail is just skin wrapped around bone, by the way. You are suggesting the sail, so you are the one who should prove that your idea is valid, not the people who are listening to you. |
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| Ceratodromeus | Mar 1 2014, 10:19 AM Post #3327 |
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Aspiring herpetologist
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you guys are pathetic XD honestly, you can't provide me anything other then your opinion on the fight? all that your telling me is im right your wrong and that's it XD sad, i might as well go back to the world of animals forum, where they have intelligient discussions.. |
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| spinosaurus rex | Mar 1 2014, 10:20 AM Post #3328 |
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Carnivore
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ever since we had sue. and in responce to your last post 1. we have little proof of tyrannosaurus reaching such length. 2. look at the vertabre. you can not tell me thats a sail. 3. a thery that has absulutly no proof whatsoever. its not even a theory. its an ussumtion 4. list one multi to animal that manage a tight turn. basiclly the only animal comparable are elephants, and your shooting bs if you think they can turn fast 5.it is pretty well knonw, basing on relatives that the largest spinosaurus holotype had a hip height over 4 meters 6.quotes from your post. and a few more complete crap The female Tyrannosaurus throws the Spinosaurus to the ground His crocodile like teeth failed to penetrate deep enough to create a lethal wound, but he had shredded the Tyrannosaurs side with his grip. Through her periphrial vision, the Tyrannosaur noticed a huge shape making its way towards her. since when is periphrial vison an advantage for multi ton animals. unless tyrannosaurus was the size of a quarter sitting on his snout, spinosaurus could see just fine infront of him. edited: hatzygopteryx, you ninja posted me with the exact same information. don't you think this is getting a little bit scary Edited by spinosaurus rex, Mar 1 2014, 10:23 AM.
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| Hatzegopteryx | Mar 1 2014, 10:21 AM Post #3329 |
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Unicellular Organism
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It is common knowledge here. FMNH PR 2081, the largest specimen known, is "only" ~12.3 metres. Scott Hartman, a very credible paleontologist, has a reconstruction of the specimen, which is nearly complete:
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| Hatzegopteryx | Mar 1 2014, 10:22 AM Post #3330 |
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Unicellular Organism
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Coming from the one who shows even less evidence, hypocrite |
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so here we go:
i merely put this up as an interpretation of what could happen. Did i come across a site of tyrannosaur haters or something?

2:23 AM Jul 14