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| Giganotosaurus carolinii v Tyrannosaurus rex | |
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| Tweet Topic Started: Jan 31 2012, 05:48 PM (110,342 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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| Bandog | Jul 31 2013, 07:01 PM Post #196 |
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Everything else is just a dog.
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Yes at those weights it would be a very close match. |
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| Spinodontosaurus | Aug 1 2013, 02:55 AM Post #197 |
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Herbivore
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CM 9380 is a robust morph too, and has the larger torso at length parity. Still, I shaved off ~100kg to allow for a slightly slimmer torso. Figure 4 of Hutchinson et al. (2011) suggests there is minimal difference in torso width - although this is not hugely helpful given that both mounts have incorrectly articulated ribs. I personally consider anything in the region of 7 - 7.5 tonnes to be reasonable, and will point out that it has the longer, deeper and presumably wider torso and enormous thighs when compared to the Giganotosaurus type specimen. IMO a small-headed Tyrannosaurus specimen such as CM 9380 or AMNH 50027 would loose to a Giganotosaurus of equivalent size, but a big-headed one such as Stan or Sue would win. |
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| Teratophoneus | Aug 2 2013, 06:48 PM Post #198 |
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Herbivore
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For me, it's a draw. I think that a slicing meat bite it's not less deadly than a crushing bite, and the Carcharodontosaurid have a weaponary efficient as those of Tyrannosaurids. Both were about the same size (in the ~ 5-10 t rage), so I see this as a 50/50. |
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| Megalosauroid | Aug 10 2013, 09:12 AM Post #199 |
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Autotrophic Organism
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Tyrannosaurus wins, depending which specimen battles which. BHI 3033 vs MUCPv-CH1: Giganotosaurus wins 58-42 MOR 555 vs MUCPv-CH1 Giganotosaurus wins 70-30 CM 9380 vs MUCPv-CH1: Tyrannosaurus wins 55-45 AMNH 5027 vs MUCPv-CH1 Tie, with slight edge towards Tyrannosaurus 51-49 RTMP vs MUCPv-CH1: Tyrannosaurus 58-42 MOR 980 vs MUCPv-CH1: Tyrannosaurus 50-50 MOR 980 vs MUCPv-95: if it is really 13,2 m long Giganotosaurus wins 60-40 FMNH PR 2081 vs MUCPv-CH1: Tyrannosaurus 80-20 FMNH PR 2081 vs MUCPv-95: Tyrannosaurus 55-45 Edited by Megalosauroid, Feb 5 2014, 12:07 PM.
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| Jinfengopteryx | Aug 10 2013, 07:14 PM Post #200 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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You talked about length parity in your first post. |
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| thesporerex | Aug 20 2013, 07:07 AM Post #201 |
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Kleptoparasite
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yeah but theropod said this is no where near length parity when using sue and MUCPv-95. |
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| Super Kaizer Ghidorah | Jan 18 2014, 03:02 AM Post #202 |
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Autotrophic Organism
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| spinosaurus rex | Jan 18 2014, 03:08 AM Post #203 |
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Carnivore
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your using the holotype that everyone knows is considerably lighter then FMNH PR2081. we have a piece of mandible from MUCPv-95 that belong to a larger individual around 13 meters or more in length. and the possibility of larger individuals that could be able to reach 14 meters out there. |
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| spinosaurus rex | Jan 18 2014, 03:10 AM Post #204 |
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Carnivore
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I just realized, I never commented on this thread until now. I say 50/50 with maybe a slight edge towards a particularly large giganotosaurus. |
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| Hatzegopteryx | Jan 18 2014, 03:37 AM Post #205 |
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Unicellular Organism
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It's 50/50, both are around the same size and they have no huge advantages over each other. |
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| spinosaurus rex | Jan 18 2014, 03:39 AM Post #206 |
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Carnivore
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in my mind, both are rather equally capable of killing each other. but I somehow think that the larger skull and specialized teeth brings a very small advantage towards giganotosaurus. |
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| Hatzegopteryx | Jan 18 2014, 03:45 AM Post #207 |
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Unicellular Organism
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T. rex has a stronger bite and crushing teeth but Giganotosaurus has the better gape, 50/50 PS.: Congrats Spinosaurus rex on recently reacing 400 posts
Edited by Hatzegopteryx, Jan 18 2014, 03:45 AM.
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| spinosaurus rex | Jan 18 2014, 03:50 AM Post #208 |
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Carnivore
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thanks without doubt, tyrannosaurus had the stronger bite, but a larger head with a greater gape with 8 inch teeth specially designed to lacerate a larger animal seems to be decent advantages to counter tyrannosaurus deadly 6 ton bite. note I am basically agreeing with you, but I my opinion tells me that a large giganotosaurus might have a fair advantage in this fight |
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| Hatzegopteryx | Jan 18 2014, 03:52 AM Post #209 |
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Unicellular Organism
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I agree, but it is still 50/50 imo. The stronger biteforce compensates the foe's bite and viceversa. |
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| Tyrannoceratospinosaurus Rex | Jan 18 2014, 04:38 AM Post #210 |
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Heterotrophic Organism
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50/50 to me. |
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