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Giganotosaurus carolinii v Tyrannosaurus rex
Topic Started: Jan 31 2012, 05:48 PM (110,313 Views)
Taipan
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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.

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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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Prehistoric Cat
Jan 31 2012, 04:53 PM
Giganotosaurus VS Tyrannosaurus
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Maximus
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T rex for me but a close fight.
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Soopairik
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Tyrannosaurus would win, but it is a very close fight overall.
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Marsupial
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Even though the giganotosaurus would have the size advantage, the tyrannosaurus rex had the upperhand due to a powerful bite and teeth for bone crushing while the giganotosaurus had teeth to pierce and slice meat.
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TheBatmeme368
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Dec 4 2017, 12:24 PM
Even though the giganotosaurus would have the size advantage, the tyrannosaurus rex had the upperhand due to a powerful bite and teeth for bone crushing while the giganotosaurus had teeth to pierce and slice meat.
It’s debatable whether or not Giganotosaurus was larger than Tyrannosaurus. While Giganotosaurus was longer, T. rex was much bulkier and robust at length parity. Here’s a comparison of FMNH PR 2081 and MUCPv-Ch1: http://www.skeletaldrawing.com/home/mass-estimates-north-vs-south-redux772013

Keep in mind that even though Sue is much larger than the holotype and slightly larger to a decent amount larger than MUCPv-95 depending on the estimate used. There are several specimens comparable to the holotype.
Edited by TheBatmeme368, Dec 10 2017, 11:32 PM.
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Drift
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Dec 4 2017, 12:24 PM
Even though the giganotosaurus would have the size advantage, the tyrannosaurus rex had the upperhand due to a powerful bite and teeth for bone crushing while the giganotosaurus had teeth to pierce and slice meat.
Agreed,however this is the one time where dentition evolved for slicing can actually counteract a maw designed to crush and rend flesh.It's a close match and not as one sided as T.rex vs spino for example.
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Migatte
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IMO, this is an even match. G. carollini is slightly larger, but T. rex had the stronger bite. At parity, the coelurosaurian has the advantage, but with the size advantage of the giganotosaurini, it evens out.
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Thalassophoneus
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Migatte
Feb 22 2018, 07:30 AM
IMO, this is an even match. G. carollini is slightly larger, but T. rex had the stronger bite. At parity, the coelurosaurian has the advantage, but with the size advantage of the giganotosaurini, it evens out.
Giganotosaurus was not really much larger. Actually it is possible that neither of the two Giganotosaurus specimens is bigger than Sue or other large T. rexes.
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SuetheRex
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Generally speaking Tyrannosaurus Rex grew shorter but heavier than other giant therapods. Comparing the two holotypes T rex weights 7500 kg and Giga weights 6800 kg. That's some advantage (even if not that marked) Rex was heavily built in both bone costruction muscular anatonomy with perfect eye-target coordination. Fairly advanced brain with that powerful vision allowed Rex to deliver a bite perfectly where it wanted to. Then the combination of neck muscle-jaw would did the rest. No need to cite that once the Rex landed a bite it would end right there basically thanks to the massive teeth, 5.5 ton bite and huge neck muscle. Being the last in the evolution chain, T rex has basically all the advantages. Most intersting fact is that discovery of Tristan, Trix and Samson along with the already well known Sue, tells us that Rexes with weights 8000-8300 kg where much more common of what the actually thought. I think that most of the time a Tyrannosaurus Rex would take it. Giganotosaurus still obviusly can win. Despite bite wise it's not that as powerful and dinosaur itself is not as heavily built, a well delivered one still means serious debilitation and most likely death in a fight.
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Migatte
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SuetheRex
Feb 22 2018, 08:17 PM
Generally speaking Tyrannosaurus Rex grew shorter but heavier than other giant therapods. Comparing the two holotypes T rex weights 7500 kg and Giga weights 6800 kg. That's some advantage (even if not that marked) Rex was heavily built in both bone costruction muscular anatonomy with perfect eye-target coordination. Fairly advanced brain with that powerful vision allowed Rex to deliver a bite perfectly where it wanted to. Then the combination of neck muscle-jaw would did the rest. No need to cite that once the Rex landed a bite it would end right there basically thanks to the massive teeth, 5.5 ton bite and huge neck muscle. Being the last in the evolution chain, T rex has basically all the advantages. Most intersting fact is that discovery of Tristan, Trix and Samson along with the already well known Sue, tells us that Rexes with weights 8000-8300 kg where much more common of what the actually thought. I think that most of the time a Tyrannosaurus Rex would take it. Giganotosaurus still obviusly can win. Despite bite wise it's not that as powerful and dinosaur itself is not as heavily built, a well delivered one still means serious debilitation and most likely death in a fight.
I thought that CM 9380 was 7200 kg? Samson was 7900 kg, Tristan was 8100 kg, and attic was 8200 kg under my calculations. I have the holotype of G. carollini at 7000 kg and the paratype at 8500 kg at my calculations.
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SuetheRex
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According to latest estimations the Giganotosaurus MUCPv-ch1 weights 6800 kg. Largest estimated speciemen, only known from a jaw piece MUCPv-95 weights an estimated 8200 kg. For what concern Rexes, T rex holotype is estimated at 7500 kg and Sue is still the largest therapod known at 8800 kg.
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Migatte
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SuetheRex
Feb 23 2018, 03:45 AM
According to latest estimations the Giganotosaurus MUCPv-ch1 weights 6800 kg. Largest estimated speciemen, only known from a jaw piece MUCPv-95 weights an estimated 8200 kg. For what concern Rexes, T rex holotype is estimated at 7500 kg and Sue is still the largest therapod known at 8800 kg.
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Interesting, although what evidence proves that MUCPv-Ch1 was about 6800 kg? Also I have doubts that FMNH PR 2081 was 8800 kg, although a 400 kg difference isn't much, maybe I am just used to Giganotosaurus being larger than Tyrannosaurus.
Still, I'll check out what the newer evidence states.
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SuetheRex
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Giganotosaurus is built in a "Lighter" way, like Mapusaurus or Carchardontosaurus. Tyrannosaurus Rex has a much larger body, and also a much larger heavier head. In general when talking about a comparison between a Giga and Rex, it's like comparing a 1.90 m fit guy to a 1.80 m bodybuilder. New laser scanning tech, gave us much much more accurate models of dinosaur in general and much more accurate weight estimations. This says it all

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Marsupial
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SuetheRex
Feb 23 2018, 03:45 AM
According to latest estimations the Giganotosaurus MUCPv-ch1 weights 6800 kg. Largest estimated speciemen, only known from a jaw piece MUCPv-95 weights an estimated 8200 kg. For what concern Rexes, T rex holotype is estimated at 7500 kg and Sue is still the largest therapod known at 8800 kg.
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Interesting, i’ve always thought that giganotosaurus was bigger, but the last time i checked was a long time ago, however with the giganotosaurus being lighter it could mean that it would have a slight mobility advantage. Regardless, this match is pretty close but the T-rexes heavy build and powerful jaws come on top, 6-7/100 times the trex wins.
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Thalassophoneus
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Feb 26 2018, 10:45 PM
SuetheRex
Feb 23 2018, 03:45 AM
According to latest estimations the Giganotosaurus MUCPv-ch1 weights 6800 kg. Largest estimated speciemen, only known from a jaw piece MUCPv-95 weights an estimated 8200 kg. For what concern Rexes, T rex holotype is estimated at 7500 kg and Sue is still the largest therapod known at 8800 kg.
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Interesting, i’ve always thought that giganotosaurus was bigger, but the last time i checked was a long time ago, however with the giganotosaurus being lighter it could mean that it would have a slight mobility advantage. Regardless, this match is pretty close but the T-rexes heavy build and powerful jaws come on top, 6-7/100 times the trex wins.
Not really. Tyrannosaurus was a better runner than other theropods of its size cause it had stronger and proportionally longer legs.
Edited by Thalassophoneus, Feb 26 2018, 11:07 PM.
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WaffleKing
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Thalassophoneus
Feb 26 2018, 11:03 PM
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Feb 26 2018, 10:45 PM
SuetheRex
Feb 23 2018, 03:45 AM
According to latest estimations the Giganotosaurus MUCPv-ch1 weights 6800 kg. Largest estimated speciemen, only known from a jaw piece MUCPv-95 weights an estimated 8200 kg. For what concern Rexes, T rex holotype is estimated at 7500 kg and Sue is still the largest therapod known at 8800 kg.
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Interesting, i’ve always thought that giganotosaurus was bigger, but the last time i checked was a long time ago, however with the giganotosaurus being lighter it could mean that it would have a slight mobility advantage. Regardless, this match is pretty close but the T-rexes heavy build and powerful jaws come on top, 6-7/100 times the trex wins.
Not really. Tyrannosaurus was a better runner than other theropods of its size cause it had stronger and proportionally longer legs.
This is false.

New studies show that Trex may have not been able to run at all.
http://physicstoday.scitation.org/doi/10.1063/1.1480769

https://news.nationalgeographic.com/2017/07/tyrannosaur-trex-running-speed/

New studies suggest that T-rex wouldn't have been much of a runner at all: It would have buckled and tripped under its own weight.

https://qz.com/1042454/how-fast-could-tyrannosaurus-rex-run-not-very/

However, the top speed of a Giganotosaurus has estimated to be up to 31mph, which is atleast 10mph faster than the 20mph estimate for a T-rex.
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