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| Spinosaurus aegyptiacus v Tyrannosaurus rex | |
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| Tweet Topic Started: Jan 7 2012, 02:16 AM (459,083 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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| Thalassophoneus | Aug 26 2017, 12:48 AM Post #4471 |
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Pelagic Killer
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I am arguing that the physical skills of each dinosaur are arguments for this thread whereas the experience they had in real life was a result of these skills, so it is irrelevant. |
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| Skuller_One | Sep 16 2017, 05:49 AM Post #4472 |
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Heterotrophic Organism
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Versus of the Century ... This image explain everything ... ![]() Spinosaurus has longer skull but T Rex's skull far higher , far wider , far thicker .... |
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| Thalassophoneus | Sep 16 2017, 06:18 AM Post #4473 |
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Pelagic Killer
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First, this skull looks more like a Suchomimus skull. Second, they appear pretty close in height here but the skull of Spinosaurus is probably thinner lateraly.
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| Soopairik | Oct 15 2017, 08:10 AM Post #4474 |
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Carnoferox's sex toy
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I think Tyrannosaurus would win this due to its stronger jaws and more robust build. |
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| Canadianwildlife | Oct 17 2017, 04:44 PM Post #4475 |
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Apex Predator
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Holy crimes my old posts in this thread were horrendous. I was such a noob then. I just read back through them and couldn't bear to even read all of them. For me to post here would be suicide. I know nothing of the topic at hand. A lot of my posts on this forum were terrible, maybe not most but a lot. Well while I'm here, who does everyone think would win if I may ask such a question? |
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| Taipan | Oct 17 2017, 05:05 PM Post #4476 |
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Administrator
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I favour T-Rex. Good to see you post again. |
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| Thalassophoneus | Oct 17 2017, 07:31 PM Post #4477 |
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Pelagic Killer
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Welcome back. I also favor T-Rex but I have voted for Spinosaurus since years ago. Is it possible for the artwork on the description to be replaced with a more updated one? Edited by Thalassophoneus, Oct 17 2017, 07:32 PM.
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| Jinfengopteryx | Oct 17 2017, 07:37 PM Post #4478 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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I voted for Spinosaurus in the time when this was still a reasonable position. |
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| Taipan | Oct 17 2017, 08:09 PM Post #4479 |
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Administrator
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This is the most recent Spinosaurus depiction we have used: ![]() And we have for a long time used this for T. rex: ![]() Are they OK? |
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| Thalassophoneus | Oct 17 2017, 09:27 PM Post #4480 |
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Pelagic Killer
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Maybe use this one for Spinosaurus. Cause it is from an angle giving a better impression of the animal than the other one. The most important thing is to change the picture in the description, which shows the outdated model. It is quite important for this famous thread.
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| AiM4 | Oct 27 2017, 06:50 PM Post #4481 |
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Autotrophic Organism
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Spino wins...if a they get rid of the ridicolous bipedal theory... |
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| Taipan | Nov 20 2017, 03:53 PM Post #4482 |
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Administrator
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Here you go! |
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| Ferreomus | Nov 20 2017, 05:26 PM Post #4483 |
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Herbivore
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Spinosaurus had elongated skull which would be at a disadvantage based on the skull width of it didn't have the teeth to maneuver big dinosaurs but was better adapted to catch fish and strip it.It's bite force my have been high and it was good at grinding it may have eaten some plant matriel to min realise it |
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| Trish | Nov 21 2017, 12:24 AM Post #4484 |
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Autotrophic Organism
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Spinosaurus VS. T-Rex -I would give the T-Rex the win even if the Spinosaurus Had a weight advantage. I've read books and other sources stating that spinosaurus may have outweighed a T-Rex, by a large percentage. For example I remember reading in a dinosaur book I used to have called Prehistoric Wild Life, where they stated that a T-Rex weighed 7 tons (14,000 pounds), while a Spinosaurus weighed 9 tons(18,000 pounds). Despite this weight advantage I would favor the dinosaur with the deadlier jaws, and that would be T-Rex, since a bite war would obviously go on. Edge to T-Rex. |
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| Mammuthus | Nov 21 2017, 01:27 AM Post #4485 |
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Proboscidean Enthusiast
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I am pretty sure the latest weight estimate for Spinosaurus is 7 tonnes. Edited by Mammuthus, Nov 21 2017, 01:27 AM.
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