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| Mapusaurus roseae v Tyrannosaurus rex | |
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| Tweet Topic Started: Apr 12 2013, 11:23 AM (13,994 Views) | |
| DinosaurMichael | Apr 12 2013, 11:23 AM Post #1 |
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Apex Predator
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Mapusaurus roseae Mapusaurus ('earth lizard') was a giant carnosaurian dinosaur from the early Late Cretaceous (Cenomanian stage) of what is now Argentina. It was similar in size to its close relative Giganotosaurus, with the largest known individuals estimated as over 12.6 metres (41 ft) in length* and weight estimates of approximately 3 metric tons to 5.5 metric tons. Mapusaurus was excavated between 1997 and 2001, by the Argentinian-Canadian Dinosaur Project, from an exposure of the Huincul Formation (Rio Limay Group, Cenomanian) at Canadon de Gato. It was described and named by paleontologists Rodolfo Coria and Phil Currie in 2006. The fossil remains of Mapusaurus were discovered in a bone bed containing at least seven individuals of various growth stages. Coria and Currie speculated that this may represent a long term, possibly coincidental accumulation of carcasses (some sort of predator trap) and may provide clues about Mapusaurus behavior. Other known theropod bone beds include the Allosaurus-dominated Cleveland Lloyd Dinosaur Quarry of Utah, an Albertosaurus bone bed from Alberta and a Daspletosaurus bone bed from Montana. ![]() 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.
Edited by Taipan, Dec 31 2016, 12:33 PM.
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| Spinodontosaurus | Sep 11 2013, 11:50 PM Post #31 |
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Herbivore
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That a fragment of bone barely 10cm long is a whole centimetre bigger than in Giganotosaurus may not mean much... although a 9-tonne carcharodontosaurid would probably win against almost any known Tyrannosaurus specimen. Having said that though, Sinkkonen's skeletal has a proportionally larger pubis than Hartman's Giganotosaurus, which is important to consider when scaling from a small pubis fragment. I recall once scaling Sinkkonen's skeletal so what I assumed to be the pubic shaft was ~10% longer than Hartman's Giganotosaurus, and the end result was it being a touch longer than Hartman's estimate of MUCPv-95 (virtually identical 'standing length' figure, but the Mapusaurus skeletal has a slightly more recurved tail, so the axial length would be a slightly higher)... although I am more than open to others doing the same. |
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| thesporerex | May 29 2014, 12:00 AM Post #32 |
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Kleptoparasite
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Why isn't this thread more popular? Anyway, pretty much another 50/50 like with most of these giant theropod match ups. Though if the ~13.6 metre long Mapusaurus actually does exist which does have a decent chance then that one specimen would probably beat all Tyrannosaurus specimens. Though we don't exactly have an average or a reliable size estimate for most Mapusaurus discovered but I would guess its in the 12 metre range just like Tyrannosaurus rex. So 50/50 is most likely imo. |
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| moldovan0731 | Dec 25 2014, 10:55 PM Post #33 |
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Heterotrophic Organism
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T. rex, because it was bigger (T.rex 12.3 m, Mapu 12.2 m). Carcharodontosaurids needs size advantage over tyrannosaurids to have change to win. |
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| Teratophoneus | Jan 5 2015, 07:31 PM Post #34 |
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Herbivore
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That's a wortless difference. We are talking about 10 cm in two 12 m + animals. That Mapusaurus may not be the largest specimen as well. |
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| theropod | Jan 28 2015, 02:43 AM Post #35 |
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palaeontology, open source and survival enthusiast
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And Sue is, and actually has an external fundamental system (which isn’t even known from Allosaurus). All in all, it’s an exceptionally large and mature specimen. |
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| Black Panther | Jul 12 2016, 09:10 PM Post #36 |
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Omnivore
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50/50. This is like a pseudo-giganotosaurs vs t.rex, they are similar in size and bulk and a slightly different skull morphology. In my opinion carnosaur vs tyrannosaur fights are often a even 50/50 battle. The deadly Crushing bite of the tyrannosaur equals the brutally effective slicing bite of the carnosaur. |
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| Drift | Jul 19 2016, 01:54 AM Post #37 |
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High Spined Lizard
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No other theropod will have superior crushing capabilities so the slicing dentition is what can counter it,This would be close imo the weights are not drastically stacked either. |
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| bone crusher | Jul 27 2016, 01:32 PM Post #38 |
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Heterotrophic Organism
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But if we're to include that hypothetically "larger" Mapo then we should also include those single boned T Rex specimens too, this can not be stressed enough. After all they belong in the same column of being scientifically unreliable. But for legit data specimens Sue alone far outweighs Mapo. Also Scotty Rex, Samsong Rex, the holotype and Rigby's Rex are quite a bit heavier too. Not to mention even at same weight, Rex is far more robustly built, more compact, shorter in length, wider in girth, bulkier neck, chest, barrel shaped body, all comes in handy in a brawl in case the bites don't instant kill. So potentially in a fight Rex could muscle its way around Mapo, overpower it eventually and gaining a better chance of delivering a final killing bite. I don't understand why people overlook these things.
Edited by bone crusher, Jul 27 2016, 01:34 PM.
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| Drift | Aug 3 2016, 02:14 AM Post #39 |
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High Spined Lizard
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Agreed, Using maximum guestimates for any individual specimen by default requires the methodology to be applied to the other. |
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| Megasaurus | Nov 19 2016, 09:19 PM Post #40 |
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Heterotrophic Organism
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T rex vs 10m Mapusaurus-T rex wins very easy T rex vs 12-13 Mapusaurus-50/50 T rex vs 13-14m Mapusaurus-mapusaurus wins |
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| Soopairik | Oct 16 2017, 09:07 AM Post #41 |
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Carnoferox's sex toy
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Agreed. It really boils down to length estimates. |
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| Thalassophoneus | Oct 16 2017, 09:33 PM Post #42 |
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Pelagic Killer
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There are hardly specimens of Mapusaurus over 13 m. long. https://franoys.deviantart.com/art/Mapusaurus-roseae-skeletal-diagram-665544500 |
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| TheBatmeme368 | Oct 24 2017, 05:13 AM Post #43 |
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Autotrophic Organism
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Yes, I’ve learnt to be quite sceptical of theropods estimated at over 8 tonnes, of course, some theropod specimens do reach that weight, it’s not as if it’s biologically impossible or anything, but things tend to get overhyped, some, for long periods of time. Anyway, 50/50. |
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| Ferreomus | Oct 24 2017, 05:32 AM Post #44 |
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Herbivore
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I'd day T rex ,the mupasarus was more of a hunter than a fighter ,the trex had a bone crushing bite which would kill the mupus aurus quickly, tyrannosaurid's had crushing bites which allowe'd to crush armoured plants bones unlike any other theropod |
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| Thalassophoneus | Oct 24 2017, 02:10 PM Post #45 |
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Pelagic Killer
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"More of a hunter than a fighter". The stupid quote of the day. They are theropod dinosaurs. They were both hunters. Why can't people stop treating dinosaurs as monsters from kaiju films? Edited by Thalassophoneus, Oct 24 2017, 02:15 PM.
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