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| Spinosaurus aegyptiacus v Tyrannosaurus rex | |
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| Tweet Topic Started: Jan 7 2012, 02:16 AM (459,348 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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| Ursus panthera | Sep 10 2012, 05:53 AM Post #496 |
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Artiodactyla
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Thats right the eland but rarely. |
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| Fragillimus335 | Sep 10 2012, 06:05 AM Post #497 |
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Omnivore
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Why do think an eland can EVER Kill a Tyrannosaurus? Edited by Fragillimus335, Sep 10 2012, 06:05 AM.
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| Shaochilong | Sep 10 2012, 06:08 AM Post #498 |
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Herbivore
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I don't think a non-biased, scientific person could believe any modern terrestrial mammal could kill a Tyrannosaurus. That's an interesting size comparrison, BTW. I like the feathers on the Tyrannosaurus. |
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| Fragillimus335 | Sep 10 2012, 06:16 AM Post #499 |
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Omnivore
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Only a Bull African Elephant has a decent chance of killing a Tyrannosaurus. |
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| Jinfengopteryx | Sep 10 2012, 06:21 AM Post #500 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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Not a decend one, it has a quite good one, still it would loose more than win. |
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| Ursus panthera | Sep 10 2012, 06:22 AM Post #501 |
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Artiodactyla
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Inaccurate size comparison. |
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| Ursus panthera | Sep 10 2012, 06:37 AM Post #502 |
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Artiodactyla
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Quite big. |
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| Fragillimus335 | Sep 10 2012, 06:46 AM Post #503 |
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Omnivore
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Nope. The Giant Eland is about 5.5 feet at the shoulder, you know that right? |
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| Ursus panthera | Sep 10 2012, 06:52 AM Post #504 |
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Artiodactyla
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I cant believe a t rex is that big. |
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| Grey | Sep 10 2012, 06:54 AM Post #505 |
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Kleptoparasite
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Full grown Tyrannosaurus would crush any eland. And I mean crush. |
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| Ursus panthera | Sep 10 2012, 06:57 AM Post #506 |
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Artiodactyla
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Ok maybe i was overrating the eland and underrating the t rex. |
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| Ursus panthera | Sep 10 2012, 07:05 AM Post #507 |
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Artiodactyla
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Then i have come to the conclusion that a large bull Eland and t rex fight would result in, t rex- 70/30. |
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| Black Ice | Sep 10 2012, 07:10 AM Post #508 |
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Drom King
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Shake my head. |
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| Ursus panthera | Sep 10 2012, 07:11 AM Post #509 |
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Artiodactyla
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80/20 then the eland has some chance. |
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| Black Ice | Sep 10 2012, 07:34 AM Post #510 |
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Drom King
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No it doesn't |
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