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| Giganotosaurus carolinii v Tyrannosaurus rex | |
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| Tweet Topic Started: Jan 31 2012, 05:48 PM (110,340 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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| TheMechaBaryonyx789 | Feb 25 2014, 04:36 AM Post #226 |
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Herbivore
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I meant dentition yes |
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| Jinfengopteryx | Feb 25 2014, 05:02 AM Post #227 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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It could've been a typo. |
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| Hatzegopteryx | Feb 25 2014, 05:40 AM Post #228 |
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Unicellular Organism
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I know, and I wouldn't take it any further since that is over thinking it. |
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| Silver_Falcon | Mar 22 2014, 05:05 PM Post #229 |
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Unicellular Organism
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Although the discussion has ended, with many settling on a 50/50, I'd like to apply my own rating scale. Note, that as these are extinct creatures, there is some speculation. (a + indicates a positive, a - indicates a negative, and a 0 indicates a neutral/unimportant. they start at zero, with a + adding a point, and a - subtracting one. a 0 is neutral, and has no effect.) Tyrannosaurus-Rex: + Great bite force, + Very sturdy build, + Possibly more stamina + Heavier (although this can work against it, it is, technically, an advantage) 0 Smarter 0 Binocular Vision -If it fell, it would have a miserable time getting back up, assuming it didn't die on impact -It would have to get a good hit on giganotosaurus' neck to win Score=2 Giganotosaurus + Longer + Mouth full of steak-knives + There is a good chance that it had better reflexes, seeing as it did occasionally hunt "Whip-Tails" 0 Likely a better sense of smell - less sturdy compared to T-rex Score=2 Overall, I think that it is a evenly matched fight, but if T-rex gets a hold of Giganotosaurus' neck early on, it's over then and there. T-rex wins. However, if that doesn't happen, then the giganotosaurus could inflict some nasty wounds, and bleed the T-rex out, but even then the rex could kill it, then die. Overall, It is a very good fight, with two well balanced combatants. 33% T-rex 33% Giganotosaurus 34% Draw (they both die) |
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| Tyrannoceratospinosaurus Rex | Mar 22 2014, 06:34 PM Post #230 |
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Heterotrophic Organism
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^ very good post there! |
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| Jinfengopteryx | Mar 22 2014, 06:43 PM Post #231 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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Sorry, but there is too much speculation. The smell thing is completely unfounded and it hunted no whiptails, that were diplodocids, but Giga hunted titanosaurids. Also, I don't see how a small length and a small weight advantage are going to help. |
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| Naronu | Mar 25 2014, 12:54 PM Post #232 |
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Apex Predator
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if there was an intimidation factor it might help seeing as both were the largest carnivores in their environment. But since this is a hypothetical fight 50/50 |
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| spinosaurus rex | Mar 25 2014, 03:04 PM Post #233 |
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Carnivore
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i don't see how giganotosaurus is less sturdier either. plus in fights like this, intelligence and binocular vision is irrelevant. |
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| The All-seeing Night | Mar 25 2014, 03:12 PM Post #234 |
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You are without honor
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The main thing I'm looking out for is the difference in teeth and jaw design. The giganotasaurus' teeth are more thin and fine, whereas the t.rex's appear more sturdy and powerful. I don't think either has much of an advantage a far was speed and agility goes. The giganotasaurus can certainly win, but I think the trex's bite (and perhaps it's build) is better suited for overpowering an opponent. I don't know what the most up to date data says about size, I have a feeling giganotasaurus is longer and heavier, but I'm not entirely sure.
Edited by The All-seeing Night, Mar 25 2014, 03:13 PM.
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| spinosaurus rex | Mar 25 2014, 03:21 PM Post #235 |
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Carnivore
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they were around the same weight. and giganotosaurus is just as devastating in an outcome of a bite as tyrannosaurus. 8 inch teeth slicing through skin, flesh, and vital arteries has the same outcome as a bite that crush bone, so i really doubt there is a major advantage between the two in that department. and that large skull and gape could actually allow giganotosaurus to have a more expandable area to bite then vise versa. |
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| TheMechaBaryonyx789 | Mar 25 2014, 05:13 PM Post #236 |
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Herbivore
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Giganotosaurus is less sturdy. Despite being roughly 1 metre longer, Giganotosaurus is still slightly smaller in terms of mass: http://www.skeletaldrawing.com/home/mass-estimates-north-vs-south-redux772013 |
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| theropod | Mar 25 2014, 11:01 PM Post #237 |
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palaeontology, open source and survival enthusiast
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It was initially concluded Giganotosaurus was the heavier animal, based on bone rubusticity. Obviously, some bones are more robust in the carnosaur, others are more robust in the tyrannosaur. Giganotosaurus´ overall built is narrower, more elongate and not as stocky as that of T. rex, which doesn´t directly relate to how sturdy its built was, although it makes a difference as to how easy certain parts are to bite (but I doubt it matters much here). |
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| Spinodontosaurus | Mar 26 2014, 12:06 AM Post #238 |
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Herbivore
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I don't know if binocular vision - or rather, stronger binocular vision seeing as both probably possessed it to varying degrees - is completely unimportant. The stronger it is the easier time the animal should have at placing and possibly avoiding bites. How much of an advantage, I don't know, but I think it is nevertheless an advantage. 'Intelligence' is pretty irrelevant though, I agree. |
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| spinosaurus rex | Mar 26 2014, 07:25 AM Post #239 |
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Carnivore
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you must consider the proportions of the animal sizes we're dealing with hear. animals with eyes placed on the side of the head do have a converging point that would allow them to have forward vision. the reason why binocular vision is irrelevent because giganotosaurus would have absolutly no problem at all perceving a tyrannosaurus (or any large organism) infront of it. so unless tyrannosaurus shrinks down small enough to be placed on giganotosaurus snout, the carnosaur is at no major disadvantage in that department. |
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| Tyrannoceratospinosaurus Rex | Mar 28 2014, 05:25 AM Post #240 |
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Heterotrophic Organism
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About the binocular and smell thingy, he already said that its no advantage in his post (0 = no points, irrevelant) |
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