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| Spinosaurus aegyptiacus v Tyrannosaurus rex | |
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| Tweet Topic Started: Jan 7 2012, 02:16 AM (459,285 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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| Black Ice | Jan 14 2013, 02:42 PM Post #1441 |
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Drom King
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Dinosaur I'm asking nicely. Stop with the bullshit. Your 19 supposedly for christ sake. |
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| dinosaur | Jan 14 2013, 02:48 PM Post #1442 |
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Heterotrophic Organism
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Wow dude. |
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| theropod | Jan 15 2013, 02:46 AM Post #1443 |
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palaeontology, open source and survival enthusiast
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he won´t stop, you should ignore him. if everybody here does, he might stop posting... |
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| dinosaur | Jan 15 2013, 03:55 AM Post #1444 |
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Heterotrophic Organism
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Hi theropod! Long time no see! |
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| Fragillimus335 | Jan 15 2013, 05:47 AM Post #1445 |
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Omnivore
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Seriously, Dinosaur is just ruining every thread he appears on, derailing the discussion and babbling useless crap. I suggest we all just ignore him completely, don't even insult him. |
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| Carcharadon | Jan 15 2013, 06:59 AM Post #1446 |
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Shark Toothed Reptile
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And plus no way is he 19 if he talks the immaturity shit he is.... |
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| mega t.rex the magnificent | Jan 15 2013, 08:43 AM Post #1447 |
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Autotrophic Organism
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Seriously whats wrong with u people? |
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| Godzillasaurus | Jan 15 2013, 09:27 AM Post #1448 |
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Reptile King
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??? |
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| mega t.rex the magnificent | Jan 15 2013, 11:37 AM Post #1449 |
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Autotrophic Organism
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In other words, whats all the commotion about? |
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| SpinoInWonderland | Jan 15 2013, 11:54 AM Post #1450 |
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The madness has come back...
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It's about an extreme fanboy that can't even accept evidence and keeps making up bs statements, unfortunately we have failed in our attempts to talk sense into him so we just ignore him now |
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| mega t.rex the magnificent | Jan 15 2013, 12:18 PM Post #1451 |
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Autotrophic Organism
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Are you serious? |
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| SpinoInWonderland | Jan 15 2013, 12:24 PM Post #1452 |
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The madness has come back...
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Yes. Just look at his posts, when you have read them you won't even waste your time on him... |
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| mega t.rex the magnificent | Jan 15 2013, 12:34 PM Post #1453 |
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Autotrophic Organism
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ok, here is what i read from him. T.rex pushing 40 ton trucks t.rex is cool and wins against everything deinosuchus 20 tons Liopleurodon 150 tons and a couple of songs from him featuring tyrannosaurus. wow. i see what you mean. |
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| Godzillasaurus | Jan 15 2013, 12:38 PM Post #1454 |
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Reptile King
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Yea. It is best that we leave this little thing alone before he starts trolling again. The more you attent to trolls, the greater chance that they won't stop. |
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| mega t.rex the magnificent | Jan 15 2013, 12:50 PM Post #1455 |
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Autotrophic Organism
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Oh I see. Maybe I can help |
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