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| Giganotosaurus carolinii v Tyrannosaurus rex | |
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| Tweet Topic Started: Jan 31 2012, 05:48 PM (110,323 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 | Jul 27 2016, 08:06 PM Post #481 |
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Omnivore
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The same thing is said over and over and over and over again with t.rex. It's bulkier It's got a stronger bite Etc...... Gigas dentition is perfectly adapted to bite larger bodies animals like sauropods and t.rex, being so wide and stocky, would give the giga more chances to bite the sides and inflict fatal wounds. |
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| bone crusher | Jul 27 2016, 09:15 PM Post #482 |
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Heterotrophic Organism
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But t.rex ain't no big dumb sauropods my friend lol, you say it as if t.rex would just stand there and generously let giga come and take a few bites. |
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| Black Panther | Jul 27 2016, 10:08 PM Post #483 |
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Omnivore
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Sauropods weren't dumb either. And the giga won't stand there and present its neck for rex to bite and break as you always say. They will have to work for their victory. It will be easier for the giga to get a bite on the Rex's side because of of its tearing teeath and larger gape. |
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| bone crusher | Jul 28 2016, 01:48 AM Post #484 |
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Heterotrophic Organism
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Like you said they would have to work for their victory, so in order to do that they need to pin one another down using sheer strength to get a critical bite. No one is gonna waste time biting all over the place since that wouldn't be efficient in killing. At the end of the day the stronger animal would simply have more chance of getting that critical bite. |
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| Carcharadon | Jul 28 2016, 03:48 AM Post #485 |
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Shark Toothed Reptile
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Who implied that would happen? |
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| Black Panther | Jul 28 2016, 03:49 AM Post #486 |
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Omnivore
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This won't be a wrestling match, more akin to the theropods bitting eachothers face, which if that is the case then I would say it's still 50/50. The t.rex definelty would be better adapted to crushing the skull but the giga would tear the Rex's face apart with each bite. If the giga manages to out maneuver the t.rex(which could happen, though not very often) it could bite literally anywhere it wants to and would inflict truly incredible wounds that would cause massive bloodloss and shock. Just as well, the tyrannosaur could outflank the carnosaur( could also happen but with even less frequency) and when it does it would not have many places to bite due to its somewhat smaller gape, and would be restriced to biting the legs tail or neck. If the dinosaur has any form of a brain it will attack the neck which could kill the giga. So in all ones disadvantages advantages cancel out the others advantages and disadvantages. T.rex crushing bite=giganotosaurus slicing bite T.rex superior bulk= giganotosaurs stronger arms, and better agilty(which is a minimal advantage) @characardon, I never said that so I don't know where he got that from. Edited by Black Panther, Jul 28 2016, 03:50 AM.
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| Ausar | Jul 28 2016, 04:27 AM Post #487 |
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Xi-miqa-can! Xi-miqa-can! Xi-miqa-can!
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I already addressed Giganotosaurus' supposed agility advantage (link).
Edited by Ausar, Jul 28 2016, 04:32 AM.
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| LeonardosHeir | Jul 28 2016, 09:20 AM Post #488 |
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Herbivore
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I couldn't find anything on the bite force of the Giganotosaurus can someone get that? Its agility is a huge advantage although. |
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| Carcharadon | Jul 28 2016, 09:37 AM Post #489 |
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Shark Toothed Reptile
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Where is it more agile? And bite force doesn't really matter for the carnosaur here. That's not what it relied on. |
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| Black Panther | Jul 28 2016, 09:41 AM Post #490 |
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Omnivore
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Ok I admit I was wrong if what ausar posted in that thread was really true. Though my point still stands. @leonardos, I'm not sure if the bite force, but I know it is weaker then Rex's due to a different but equally devastating killing method and dentition. |
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| LeonardosHeir | Jul 28 2016, 09:54 AM Post #491 |
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Herbivore
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Welll what am asking is, could one bite to the neck from the Giganotosaurus kill a Tyrannosaurus? |
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| Black Panther | Jul 28 2016, 10:00 AM Post #492 |
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Omnivore
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Probably. It's teeth would rip the throat apart and test tendons effortlessly. The same can be said tha t.rex can crush the neck of giga. |
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| Carcharadon | Jul 28 2016, 10:05 AM Post #493 |
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Shark Toothed Reptile
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It would destroy all the soft tissue, and there'd be some awful bleeding. Tyrannosaurus wouldn't last long if Giganotosaurus bit it on the neck once. A theropod that couldn't function its head properly is screwed. |
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| TheROC | Jul 28 2016, 10:18 AM Post #494 |
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Herbivore
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It would not surprise me at all if Giganotosaurs could bite comparably as hard as an equal weight t.rex. Komodo dragons are often brought up as an analogue to carcharodontosaurs skull wise. And a modest sized komodo dragon had a bite force of 600 lbs. Assuming it was 8.5 feet long, a hypothetical 40 foot komodo would have a bite force of 6.6 tons accounting for isometric scaling. Not to mention, Dr. Sakamoto's study showed that carcharodontosaurs could have an even greater mechanical advantage along their tooth row than T.Rex did. Edited by TheROC, Jul 28 2016, 10:28 AM.
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| Black Panther | Jul 28 2016, 10:43 AM Post #495 |
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Omnivore
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May I see the study claiming that? It's not that I don't believe that but I want to know where you got it from. |
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