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| Giganotosaurus carolinii v Tyrannosaurus rex | |
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| Tweet Topic Started: Jan 31 2012, 05:48 PM (110,349 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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| Taipan | May 22 2013, 06:08 PM Post #91 |
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Topic reopened! |
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| SpinoInWonderland | May 22 2013, 06:34 PM Post #92 |
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The madness has come back...
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Bite force doesn't mean everything, and "most advanced" is bs, evolution is a tree not a ladder. |
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| Bandog | May 22 2013, 06:45 PM Post #93 |
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Everything else is just a dog.
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I don't necessarily agree, in the evolutionary arms race, it is certainly possible that the more recent tyrannosaurus will have adaptations that give it an advantage in inter-theropod conflict that weren't a selective pressure for giganotosaurus. Entirely speculative though. |
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| SpinoInWonderland | May 22 2013, 06:53 PM Post #94 |
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The madness has come back...
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The 10+ tonne estimates were heavily exaggerated. Don't use them. And @Taurus, I can't believe how biased you are.
Gigantosaurus is a sauropod, one likely large enough to easily decimate your beloved Tyrannosaurus. ![]() http://en.wikipedia.org/wiki/Gigantosaurus
What fanboyism. Giganotosaurus is the heavier one, NOT Tyrannosaurus. And you seriously expect others to believe the smaller animal to win 70% of the time? Also, a crushing bite isn't deadlier than a slicing bite.
Giganotosaurus is larger than Tyrannosaurus, the smallest known Giganotosaurus is roughly around the size of the largest confirmed Tyrannosaurus. Giganotosaurus's skull isn't fragile at all, look at Scott Hartman's skeletal. And the not built for combat part is total bs. You say that Darkgricer didn't do his research, but you apparently are the one who is stating mainstream fallacies. Refrain from being a hypocrite.
It's funny how you try to insult Darkgricer when you're the one stating bs. The Giganotosaurus holotype is already similar in size to the largest confirmed Tyrannosaurus specimen. Also, Tyrannosaurus would be the one with less dense bones, being closer to birds than carnosaurs. You're trying to correct Darkgricer with bias, it would be better for you to go and do some research yourself.
Show me evidence that Giganotosaurus' skull is fragile.
You're just like Taurus, a biased fanboy. And aren't you the one ignoring logic? ![]() Giganotosaurus is the one taller. And the Tyrannosaurus there is FMNH PR2081, the largest confirmed Tyrannosaurus, an average one would be even smaller. As for speed, this is a fight, not a race, and intelligence is irrelevant here. And more muscle mass = more strength. I would continue with more of the pathetic posts in this thread, but I don't have the patience to do so. |
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| SpinoInWonderland | May 22 2013, 06:54 PM Post #95 |
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The madness has come back...
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The problem with that is that Giganotosaurus was rather different from tyrannosaurids... |
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| 7Alx | May 22 2013, 06:55 PM Post #96 |
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Herbivore
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Shut up Broly! Stop correcting over 1 year posts! They have been inactive for long time.
Edited by 7Alx, May 22 2013, 06:56 PM.
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| Bandog | May 22 2013, 06:57 PM Post #97 |
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Everything else is just a dog.
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The principle hold true though, the later animal has likely faced more selective pressures, some beneficial for fighting, than the older animal. Though it is only a possibility |
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| Spinodontosaurus | May 23 2013, 02:05 AM Post #98 |
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Herbivore
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Tyrannosaurus wins. It was at least as large, if not larger than Giganotosaurus, and holds most of the advantages imho, besides height (which is still pretty comparable) and probably jaw gape. |
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| SpinoInWonderland | May 23 2013, 02:12 AM Post #99 |
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The madness has come back...
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Have you not seen Scott Hartman's size comparison? |
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| Super Kaizer Ghidorah | May 23 2013, 02:36 AM Post #100 |
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Autotrophic Organism
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Tyrannosaurus is still the undefeated theropod. He aint the king for nothing. |
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| Spinodontosaurus | May 23 2013, 02:52 AM Post #101 |
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Herbivore
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^He aint the king to begin with.
Of course. Tyrannosaurus' torso is just as long, deeper and wider. It's tail is shorter, as are it's legs, but skull (probably) heavier. So, in my opinion, FMNH PR2081 and MUCPv-95 are comparable in size, with MUCPv-Ch1 being smaller. |
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| Teratophoneus | May 23 2013, 02:55 AM Post #102 |
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Herbivore
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Giganotosaurus is bigger, taller, heavier, but not so dramatically, but only slightly, and probably Tyrannosaurus had to be more intelligent, but I do not know what is used in a fight. I would say 50/50. |
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| Godzillasaurus | May 23 2013, 03:01 AM Post #103 |
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Reptile King
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Tyrannosaurus was smaller than giganotosaurus at around 6-7 tons (correct me if I am wrong). Giganotosaurus weighed around 8-9 tons. I would agree that giganotosaurus was less heavily built, but it still had superior weaponry (excluding the obvious advantage that t-rex had bite-force wise); knife-like teeth, more powerful forearms, and a wider gape. |
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| MysteryMeat | May 23 2013, 03:15 AM Post #104 |
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Herbivore
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Perhaps it is taller and longer, but I am not sure if it's heavier. According to my calculation, MUCPv-Ch1 would only weigh about 85% as Sue (it's torso is smaller and narrower, and legs much smaller); comparable to an rather average rex. While Hartman's MUCPv-95 would weigh 3% more than Sue. But Hartman's MUCPv-95 dentary shallowest depth at 7% more than MUCPv-Ch1, when it really should only be 2% deeper. I think Hartman's MUCPv-Ch1 is slightly over-sized. Sue: 12.3m, 85000kg?, MUCPv-Ch1 12.4m, 72000kg, MUCPv-95 12.7-13.2m, 80000-87000kg? The largest specimens of both species weigh about the same, while giga is a lot longer at weigh parity. But that's just my opinion. |
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| MysteryMeat | May 23 2013, 03:16 AM Post #105 |
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Herbivore
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not true, MUCPv-Ch1 clearly has overall volume less than Sue. if you think largest rex only weighs 7t, then MUCPv-Ch1 would weigh 6t, not 8. |
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