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| Giganotosaurus carolinii v Tyrannosaurus rex | |
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| Tweet Topic Started: Jan 31 2012, 05:48 PM (110,316 Views) | |
| Taipan | Jan 31 2012, 05:48 PM Post #1 |
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Giganotosaurus carolinii Giganotosaurus ("giant southern lizard"), was a carcharodontosaurid dinosaur that lived 93 to 89 million years ago during the Turonian stage of the Late Cretaceous period. It is one of the longest known terrestrial carnivores, bigger than Tyrannosaurus, but in length and weight, smaller than Spinosaurus. Although longer than T. rex, G. carolinii was lighter and had a much smaller braincase that was the size and shape of a banana. A well-developed olfactory region means it probably had a good sense of smell. Titanosaur fossils have been recovered near the remains of Giganotosaurus, leading to speculation that these carnivores may have preyed on the giant herbivores. Fossils of related carcharodontosaurid fossils grouped closely together may indicate pack hunting, a behavior that could possibly extend to Giganotosaurus itself. he holotype specimen's (MUCPv-Ch1) skeleton was about 70% complete and included parts of the skull, a lower jaw, pelvis, hindlimbs and most of the backbone. The premaxillae, jugals, quadratojugals, the back of the lower jaws and the forelimbs are missing. Various estimates find that it measured somewhere between 12.2 and 13 m (40 and 43 ft) in length, and between 6.5 and 13.3 tons in weight. A second, more fragmentary, specimen (MUCPv-95) has also been identified, found in 1987 by Jorge Calvo. It is only known from the front part of the left dentary which is 8% larger than the equivalent bone from the holotype. This largest Giganotosaurus specimen is estimated to represent an individual with a skull length of 195 cm (6.40 ft), compared to the holotype's estimated at 1.80 m (5.9 ft) skull, making it likely that Giganotosaurus had the largest skull of any known theropod. Giganotosaurus surpassed Tyrannosaurus in mass by at least half a ton (the upper size estimate for T. rex is 9.1 t). Additionally several single teeth, discovered from 1987 onwards, have been referred to the species. ![]() 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. 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. ![]() ______________________________________________________________________________
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| Black Panther | Aug 3 2016, 01:12 AM Post #586 |
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Omnivore
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[quoteif this didn't come off as nothing but a rant filled with nothing but your words][/quote] I already replied to it. I'm oreety sure I refuted all the "points"
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| bone crusher | Aug 3 2016, 03:32 PM Post #587 |
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Heterotrophic Organism
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You don't need to have a body like a boa constrictor to have a well muscled body and just because theropods don't constrict doesn't mean they can't use their bodies to slam each other, it might not be their primary mean of attack but it's certainly not glass thin. Animals especially the multi tons ones body slams each other all the time. And what the hell does comparing a sauropod like a saltosaurus to a theropod prove anything lol? Who's grasping at straws really? And a Carnotaurus is much lighter than a 1.8t Allosaur not to mention other disadvantages like weaker jaws, lack of killing bite etc. Yeah again just coz something isn't in your favor you instantly dismiss it, why couldn't they body slam each other? Even humans who aren't built to bite, would bite one another when cornered. You are also overlooking a lot of factors in a fight, just coz it's a face to face fight doesn't mean they can't do other things. This is not the Olympics lol. Now I'm not suggesting they race, but being faster on your feet with a more powerful short burst would help you get to the target faster, kick harder when you're down, more power to topple the opponent using legs. Again a MUCH thicker neck helps to pull, lift, slam, shake more effectively once you bit onto something. At the very least it proves more strength in t-rex if anything. Up till now you have countered nothing, I know exactly the point you're trying to make and I'm not overlooking it. I admit the same level of killing efficiency in giga's bite, but the physical strength advantage in t-rex would help it getting closer to the killing bite sooner or later. You tend to see things in the best case scenario for giga but overlook many other factors in a fight. When weight, speed, and killing bite are equal, it comes down to strength, there's no way to completely nullify the strength factor in a fight. |
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| Jaws | Aug 30 2016, 11:28 AM Post #588 |
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Heterotrophic Organism
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50/50 They are practically the same except for the bite force thing |
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| Ceratodromeus | Aug 30 2016, 11:56 AM Post #589 |
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Aspiring herpetologist
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This is making a lot of assertions you are not backing up at all. |
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| Carnotaur | Sep 2 2016, 04:24 AM Post #590 |
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Saprotrophic Organism
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Very close match in my opinion:Both theropods were similar in size,strength and agility,and both had weapons that could do serious damage.However,I think that Giganotosaurus would have a small edge,since its teeth were better at slicing,fact that,in my point of view,is more helpful in a carnivore vs. carnivore figth than teeth adapted for crushing. |
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| Teratophoneus | Sep 4 2016, 10:40 PM Post #591 |
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Herbivore
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I'd like to know why you think that teeths good at slicing are better than teeths good at crushing. |
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| bone crusher | Sep 5 2016, 05:48 PM Post #592 |
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Heterotrophic Organism
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Quite a few t-rex specimens are bigger than the Giga type specimen and strength wise t-rex definitely has it beat also. The blunt, bone crushing teeth of t-rex if anything could be more effective at delivering an instant kill. Edited by bone crusher, Sep 5 2016, 05:49 PM.
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| The All-seeing Night | Sep 5 2016, 05:58 PM Post #593 |
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You are without honor
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Oh...my...god... |
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| Ceratodromeus | Sep 5 2016, 10:06 PM Post #594 |
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Aspiring herpetologist
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not sure why people would expect him to be objective at all.
Edited by Ceratodromeus, Sep 6 2016, 07:52 AM.
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| Black Panther | Sep 5 2016, 11:13 PM Post #595 |
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Omnivore
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Telling him(bone crusher) that his biasness would change. Me, ceratodromeus, ausar, and several others have debated with him before about all the baseless claims he makes. He dosent listen and he never will. |
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| Carnotaur | Sep 6 2016, 01:59 AM Post #596 |
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Saprotrophic Organism
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Because animals with slicing teeth(and with bigger gape)can bite more effectively at larger and more convex parts of the body than animals with crushing teeth,that mostly needs to get their jaws around smaller parts of the body to crush effectively. |
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| Spartan | Sep 6 2016, 03:03 AM Post #597 |
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Kleptoparasite
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That's more dependent on the size of the gape than the form of the teeth. The whole slicing vs crushing discussion is besides the point here anyway. It plays a role in long-term selection concerning effectiveness against prey. The jaw morphology of T. rex and Giganotosaurus is pretty similar, both are of equal size, have a gape large enough to bite almost anywhere on the body and both are not armoured. The big question here is who is first to get past the head of its opponent, not how effective such an attack would be. |
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| Carnotaur | Sep 6 2016, 04:38 AM Post #598 |
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Saprotrophic Organism
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But the form of the teeth also is important,since more compressed teeth with sharper serrations would cause more damage when biting in a large and convex area than thicker and blunter teeth,which were "made" to bite in smaller areas where they can crush something,as you can see in the post of Ceratodromeus here: http://carnivoraforum.com/topic/9371601/26/. Anyway,the edge that I am inferring for Giganotosaurus in this figth is only a very sligth one. Edited by Carnotaur, Sep 6 2016, 04:40 AM.
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| Ausar | Sep 6 2016, 06:05 AM Post #599 |
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Xi-miqa-can! Xi-miqa-can! Xi-miqa-can!
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I already addressed the Argentine tegu-Tyrannosaurus comparison made in that post.
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| Ceratodromeus | Sep 6 2016, 06:11 AM Post #600 |
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Aspiring herpetologist
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To be honest my posts from that time era give me such a headache that the bit about argentine B& W tegus and Tyrannosaurus can be ignored. |
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I already replied to it. I'm oreety sure I refuted all the "points"






2:24 AM Jul 14