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| Spinosaurus aegyptiacus v Tyrannosaurus rex | |
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| Tweet Topic Started: Jan 7 2012, 02:16 AM (459,161 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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| Drift | Feb 21 2014, 05:23 AM Post #3301 |
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High Spined Lizard
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Ugh i know the feeling, not one of satisfaction like most here would feel |
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| retic | Feb 23 2014, 08:18 AM Post #3302 |
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snake and dinosaur enthusiast
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Andrea Cau also stated that the spinosaurus holotype is a subadult in 2013. "Based on a detailed description of the fossil (Stromer 1915), and the illustrations in the same study, it is seen that most of the vertebrae did not complete fusion of the neural arch and the center. Generally, this fusion occurs in the adult stage. This would seem to indicate that the specimen was subadult." http://theropoda.blogspot.it/2008/12/misteriosi-giganti-del-sahara-quarta.html this quote can be found in the comment section. |
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| blaze | Feb 23 2014, 08:27 AM Post #3303 |
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Carnivore
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I remember a recent post of him saying it was not a subadult mmm edit: here it is http://translate.google.com/translate?u=http%3A//theropoda.blogspot.mx/2013/11/loverbite-reale-ed-il-subadulto.html&hl=en&langpair=it|en&tbb=1&ie=utf-8 From November 2013 (the comment in the previous article is from August 2013) Edited by blaze, Feb 23 2014, 08:34 AM.
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| Hatzegopteryx | Feb 23 2014, 08:33 AM Post #3304 |
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Unicellular Organism
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Prey is totally irrelevant, there is no need to bring it up. Using the prey ideology a Bull is defeneless because it feeds on plants. |
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| retic | Feb 23 2014, 08:34 AM Post #3305 |
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snake and dinosaur enthusiast
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thanks Edited by retic, Feb 23 2014, 08:43 AM.
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| Drift | Feb 23 2014, 10:23 AM Post #3306 |
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High Spined Lizard
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Not necessarily, a bull has no prey it is a herbivore rendering your argument invalid.Unless there is a case in which vegetation i considered a prey item to some indigenous species somewhere than what you say cannot hold water. |
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| retic | Feb 23 2014, 11:19 AM Post #3307 |
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snake and dinosaur enthusiast
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i kind of agree with you, though the bull example may not be a great example. a better example would be sun bears since they are omnivorous and usually take small prey, but are formidable. however, the prey an animal normally hunts might show its killing capabilities. |
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| TheMechaBaryonyx789 | Feb 23 2014, 06:01 PM Post #3308 |
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Herbivore
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I never brought up the prey aspect, I said that Spinosaurus would of had more experience fighting other large theropods due to there being more of them in its region. I never said it was an advantage or anything. |
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| Drift | Feb 25 2014, 06:53 AM Post #3309 |
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High Spined Lizard
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Yes this is a very realistic standpoint on the matter, i agree with it |
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| Hatzegopteryx | Feb 25 2014, 07:18 AM Post #3310 |
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Unicellular Organism
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How? It is its equivalent of prey, hence the fact it feeds on that. Examples: A theropod feeds on a ceratopsian, so the popular logic is that it is an efficient killer, becaue it hunts, kill and eats a potentially lethal creature. May I ask you, is that relevant to its combating skills againt a predator that has never had to deal with it? A bovine feeds on grass, which is a defenseless organism. But does that mean that itself can't fight, due to what it feeds on? No, because if that logic worked, a Coyote would kill the Bull just because it preys on organisms that can actually represent more of a threat than grass. A dinosaur's paleoecology is irrelevant when you are talking about two dinosaurs from different continents and temporal ranges, since they are multiple specimens, not MMA fighters. If they were MMA fighters, unique individuals, they'd know their opponents techniques and they would practice their combating skills, but we are talking about a classification superior to specimen. I hope this is enough to get my point. |
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| Hatzegopteryx | Feb 25 2014, 07:20 AM Post #3311 |
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Unicellular Organism
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But then why were you bringing it up? If it isn't a relevant factor, and doesn't affect the duel, there is no point on preferring to choose it over a relevant factor, e.g. size. |
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| Hatzegopteryx | Feb 25 2014, 07:21 AM Post #3312 |
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Unicellular Organism
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I was disproving the paleocology as a matering factor concept. |
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| Tyrannoceratospinosaurus Rex | Feb 25 2014, 07:48 PM Post #3313 |
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Heterotrophic Organism
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Some guys might disagree but in my opinion comparing prey items can be quite helpful. In a fight to the death, one of the most important deciding factors is skill. The better your skills are, the better fighter you are. One of the best ways to try to get a picture of the fighting skills of an extinct predatory animal is to look at its prey. Predators evolve to hunt prey. If a theropod can kill a mighty ceratopsian with three horns on its face, its an indicator of the effectiveness of its weaponry in a fight. In other words you must be strong to kill something that's strong. The bull analogy is poor one. Because prey items fight with their predators, not with the plants. A buffalo for example is a good fighter because he needs to fight off prides of hungry lions. On other words the effectiveness of a plant eater's weaponry is reveled when he fights off a powerful predator. Edited by Tyrannoceratospinosaurus Rex, Feb 25 2014, 07:48 PM.
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| Ceratodromeus | Mar 1 2014, 09:39 AM Post #3314 |
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Aspiring herpetologist
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I found this little gem on the Jurassic world forum, i have full permission from the writer to use it. Probably the most unbiased, realisti outcome there is. In the Near corner...Tyrannosaurus Rex the "Tyrant lizard King" Length: 14 meters Height: 6 meters Weight: 8 tons Tyrannosaurus Rex was one of the largest land based predators of all time. With jaws stretching 5 feet long, and bannana shaped teeth, this animal could eat whatever it wanted. It's jaws were built specifically for crushing bone and armor, which evolved to deal with the intimadating Ankylosaurus and Triceratops. Tyrannosaurus Rex roams on both Isla Sorna and Nublar, competing with the variety of huge theropods around it. Tyrannosaurus is a dull orange color, with huge white half circles splotched on the body. In the far corner....Spinosaurus Aegyptiacus the "Egyptian Pharoah" Length: 16 meters Height: 6.5 meters Weight: 9 tons Spinosaurus is the fisherman from hell. It preys on a large variety of Sharks and other fish, and on occasion, takes out a small hadrosaur. The key to their massive size is simple. Little competition. Spinosaurus evolved to a semi aquatic life style to avoid competition with other large bodied predators. However, it will use its large size to scare off a predator from its kill. Spinosaurus' body is a jet black color with a creamy white colored face, a small stripe running down the neck. They range in decent numbers on both Sorna and Nublar And...Begin... The blazing noon sun beats down on Isla Nublar as a female Tyrannosaurus goes on the hunt. She has spent most of her day lazily sprawled under her favorite pine tree, but the intense heat forced her from her slumber. She raises her immense body off the ground, and feels her stomach growling. It has been days since she last had a decent meal, and she decides to search out easy prey. The Tyrannosaurus lifts her head into the air, and sniffs out a target. She smells the familiar scent of blood, and pinpoints the animal. Not exactly sure what it is yet, she starts her long walk. An hour goes by and the sun is still unrelenting. The Tyrannosaurus can see waves of heat coming off the parched ground, she decides to divert from her hunt to search for water. Luckily for her, a small section of river was only forty yards away. She lumbers towards it, and lowers her massive head to drink. She had completly forgotten about her hunt, when a soft snorting sound came to her ears. She jerked her head up, and across the river was a small Parasaurolophus, aparently unaware of the Predators proximity. The hadrosaurs back was turned, and the Tyrannosaur moved. With three massive strides, she closed the distance between her and the Hadrosaur. The female Tyrannosaurus bit it through the neck, shutting out the shrill cry of the dying hadrosaur. She pushes the dead animal to the ground and began to feast. Nearby, a gargantuan male spinosaurus looks for sharks in his favorite spot. He had been here since he was a mere hatchling, and he knew no other spot. He watches the water intently, when he hears a shrill cry. The enormous Spinosaur jerks his attention from the lazy river as he hears the hadrosaurs dying shriek. The Spinosaur looked to the water once more, and not seeing any fish, decided the call was worth checking out. The intense heat was becoming a bother to him, and he flushed blood towards his sale, turning it white. The Male spinosaurus immidiatly felt the relief, and walked steadily toward the open plain from which the shriek came from. The female Tyrannosaur had just started to eat the Hadrosaurs liver, when she felt the ground begin to shake. She scanned the plain, listening intently for any sign of a rival predator. The booming stopped, and The Tyrannosaurus assumed the local Sauropods had knocked down another tree. She turned her head back to the carcass and resumed feeding. The Spinosaurus observed the Tyrannosaur from the cover of a stand of conifer trees. He was shocked the Tyrannosaurus had not noticed him. He watched her feed, but realized the choice cuts would soon be gone if he didn't act now. As he lifted his massive left foot, he noticed a small breeze. He turned to face the east, and saw a bank of grey clouds creeping over the small mountains. A storm was brewing. The Spinosaurus turned his attention back to the Tyrannosaur, and stepped out from the trees. The Female Tyrannosaurus was too intent on eating the Hadrosaur she didn't notice the gust of wind, or the super predator slowly making his way towards her. Through her periphrial vision, the Tyrannosaur noticed a huge shape making its way towards her. She swallowed the remains of the liver, and stood at attention. She was stunned to see the massive spinosaurus, only across the river now. She looked at the Spinosaurus, and gave a blood curdling roar that shook the earth. She put her massive foot down on her kill, just as the wind began to pick up in intensity. The Spinosaurus Howled at the Tyrannosaur, and turned his sail a bright yellow color. The Tyrannosaur stood her ground. She was going to eat her kill, no one else. Seeing his tactic had failed to scare the Tyrannosaurus, The Spinosaurus advanced. He stepped into the river, and the Tyrannosaurus snapped her jaws, the final chance for the Spinosaurus to leave. The Spinosaurus stood still for a moment, apprehensive on what to do. His growing hunger made that decision for him. With a high pitched growl, the Spinosaurus rushed forward. The female Tyrannosaurus planted one foot firmly into the ground, bracing for impact. The bull spinosaurus slammed directly into her with incredible force, and she went reeling back. The Spinosaur grabbed the dead Hadrosaurs foot, and began to drag it away. He noticed the clouds had advanced, and the sky was darkening. The Female Tyrannosaurus noted this, and rushed at the Spinosaurus. He saw this coming, and as the Tyrannosaur approached, he swung his massive arm. He connected with the side of her head, and she went reeling into the water. The Spinosaurus resumed dragging the hadrosaur, but he miscalculated. The Tyrannosaurus had recovered quickly, and now lunged at the Spinosaurus neck. Before he could swing his arm, the Tyrannosaur bit into the side of his neck. The spinosaur pivoted, and The female Tyrannosaur lost her grip. The two adversaries turned to face each other, sharing a mutual icy glare. They roared simultaneously, just as a strong bit of wind blew the foliage around them into the air. The two massive theropods started walking circles around each other, trying to pinpoint a weak spot on the other. The Tyrannosaurus began to close the circle, and the Spinosaurus lunged. The female Tyrannosaurus attempted to dive out of the way, but she was too slow. The Spinosaur caught her by the side, and bit down on her back. His crocodile like teeth failed to penetrate deep enough to create a lethal wound, but he had shredded the Tyrannosaurs side with his grip. The female Tyrannosaurus lurched forward, and the Spinosaurus almost fell to the ground. The Tyrannosaur spun around, and rammed her head into the Spinosaurus' side. The bull Spinosaur teetered precariously for a moment, but regained his balance. He turned once again to face the Tyrannosaur, who was now rushing head on at him. He swung his arm, but couldn't follow through. To his horror, the Tyrannosaur had his arm in her mouth. With a sickening crunch, The Tyrannosaurus crushed the Spinosaurus' arm. She released it, and it hung limply in the cold air. Fueled by fury, the Spinosaur lurched forward. The Tyrannosaur saw this coming, and jumped to the side. She was bleeding heavily, and breathing came at great difficulty. She needed to end this. The Spinosaur had the same thoughts going through his head. The hadrosaur was the last thing on his mind now. This fight was personal. The two behemoths faced each other and roared defiantly, while lightning flashes nearby. The two super predators rush towards each other, mouth agape. The Tyrannosaur lowers her head, and the Spinosaur prepares to finish her off with a neck bite. The Tyrannosaur rams head on into the Spinosaur, and he bites down on her back. The force of the Tyrannosaurs impact lifted the spinosaur slightly off the ground, and he lost his grip. The Tyrannosaur thrashes her head, and the spinosaur almost falls over. As he reels backwards, the Tyrannosaurus rushes at him again. She bites down on his neck, and he slumps to his knees. He swats at the Marauding Tyrannosaur, sinking his claws into her neck. He digs them in deep, and the Tyrannosaur applies pressure to her bite. The talons of the spinosaur slide slowly out of her neck, as he takes his last breaths. The female Tyrannosaurus throws the Spinosaurus to the ground, and walks back to finish off her dinner. She almost collapses from her injuries, buckling under what was probably a broken toe bone.Thunder rumbles, and she lets out a high pitched roar into the darkened sky.. and the winner is...Tyrannosaurus! |
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| spinosaurus rex | Mar 1 2014, 09:42 AM Post #3315 |
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Carnivore
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i'm usually not a very idecent poster, but really? do your really belive in all this crap? |
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