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| Spinosaurus aegyptiacus v Tyrannosaurus rex | |
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| Tweet Topic Started: Jan 7 2012, 02:16 AM (459,370 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 | Aug 10 2012, 05:13 AM Post #166 |
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palaeontology, open source and survival enthusiast
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Sorry for going offtopic, I forgot that this was T rex vs Spinosaurus, because all the other ones were discussing about the size of Carcharodontosaurus. |
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| Jinfengopteryx | Aug 10 2012, 05:41 AM Post #167 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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You're meaning Portugal. I know, Portugal and America are similar, but we have no evidence for Portugal being more close to Germany than America. Also, we have only fragments, we haven't even a skull(most represantative for seperations)more than 50%(Or even 25%)complete, so we can't say them to be the same animal. |
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| Carcharadon | Aug 10 2012, 12:30 PM Post #168 |
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Shark Toothed Reptile
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Anyways, I'll tell why I voted for T.rex: 1. It (obviously) has a stronger bite force 2. It hunted bigger and stronger prey 3. It is more evolved 4. If it can grab Spino's neck with it's jaws, then guess what would happen? Though, Spinosaurus still had a chance, but I would favour T.rex most of the time |
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| theropod | Aug 10 2012, 08:01 PM Post #169 |
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palaeontology, open source and survival enthusiast
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imo we can regard them as the same animal as long as nothing clearly distinguished them. we have no evidence for germany not being connected to portugal at that time, and as long as nothing more precise it´s known, nothing refutes this being an already described animal imo |
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| Jinfengopteryx | Aug 11 2012, 04:10 AM Post #170 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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Well, Western Euroope and germany seem to have completely different ecosystems, even if they were connected, that doesn't mean Saurophaganax would visit germany, because America and Portugal were huge landmasses, with enough Mega Herbivores, Germany just a collection of Islands. Also, the Monster is very fragmentary, so we shouldn't be that hasty. Again, we need more fossils. Paleontologists should get more money, than more will do this job and we find more, we shouldn't waste it, with things like reviving Dinosaurs(some seriously try it). |
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| Jinfengopteryx | Aug 11 2012, 04:20 AM Post #171 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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That's true.
Let's make a Grizzly fight against a wolf, who would win? I know, Spinosaurus hunted medium sized to small dinosaurs, while Tyrannosaurus attacked very well armed Herbivores and members of the species, but as you can see in my example, this isn't very important.
Well, they had different evolutions and at the end of Spinosaurus time, we had a mass extincton, what made the evolution of new Mega Carnivores start again. Also living later, doesn't mean being smarter(Octopus already exist for a very long time, but would you call them stupid or primitive? They are highly advanced, their abilitys are amazing.)
![]() But first it will have to reach the neck, Spinosaurus was a lot taller, so it could use it's limbs, for defense. |
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| jj5893 | Aug 22 2012, 06:17 AM Post #172 |
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Heterotrophic Organism
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Actually I saw a documentary of spino scaring off an adult trex not lieing. Spinosaurus is heavier, longer, taller and bigger jaws. |
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| Black Ice | Aug 22 2012, 06:21 AM Post #173 |
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Drom King
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I seen that doc also! But honestly tyrannosaurus wins. |
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| Carcharadon | Aug 22 2012, 06:24 AM Post #174 |
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Shark Toothed Reptile
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Hey guys......
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| Black Ice | Aug 22 2012, 06:26 AM Post #175 |
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Drom King
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That rainbow color makes my eyes flash up! Hmmmm, thats odd, we seem to be missing a certain someone, but who?
Edited by Black Ice, Aug 22 2012, 06:28 AM.
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| Apex | Aug 22 2012, 06:40 AM Post #176 |
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Omnivore
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spino must win it was 18m 6m larger than rex seriosly how can anyone in their right mind support rex |
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| jj5893 | Aug 22 2012, 06:40 AM Post #177 |
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Heterotrophic Organism
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Well if saw that spino roaring and scaring off the t-rex then you would know that spino wins. |
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| jj5893 | Aug 22 2012, 06:41 AM Post #178 |
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Heterotrophic Organism
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Well if saw that spino roaring and scaring off the t-rex then you would know that spino wins. |
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| Black Ice | Aug 22 2012, 06:41 AM Post #179 |
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Drom King
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Hey buddy theres a difference between scaring off a animal, and killing one In a fight t rex would destroy spinosaurus |
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| Black Ice | Aug 22 2012, 06:48 AM Post #180 |
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Drom King
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Your using spinosaurus maximum size against a 14m t rex, which is avg. Why not avg vs avg? Edited by Black Ice, Aug 22 2012, 06:49 AM.
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