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Saurophaganax maximus v Tyrannosaurus rex
Topic Started: Dec 15 2012, 10:02 PM (59,186 Views)
DinosaurMichael
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Saurophaganax maximus
Saurophaganax ("lizard-eating master") is a genus of allosaurid dinosaur from the Morrison Formation of Late Jurassic Oklahoma (latest Kimmeridgian age, about 151 million years ago). Some paleontologists consider it to be a species of Allosaurus (A. maximus). Saurophaganax represents a very large (13 metres (43 ft) long). Saurophaganax was one of the largest carnivores of Late Jurassic North America. Ray even gave an estimate of the body length of fifteen metres and Chure of fourteen, though later estimations have been lower. The fossils known of Saurophaganax (both the possible New Mexican material and the Oklahoma material) are known from the latest part of the Morrison formation, suggesting that they were either always uncommon or appeared rather late in the fossil record. Saurophaganax was large for an allosaurid, and bigger than both its contemporaries Torvosaurus tanneri and Allosaurus fragilis. Being much rarer than its contemporaries, making up one percent or less of the Morrison theropod fauna, not much about its behavior is known. Stovall in Oklahoma also unearthed a considerable number of Apatosaurus specimens, a possible prey for a large theropod.

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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.[1] 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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Edited by DinosaurMichael, Dec 15 2012, 10:02 PM.
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Carnosaur18
Jan 22 2014, 08:09 AM
Rex is bigger, no doubt( i'm new just so ya know) but Saurophagonax is a bit too fragmentary to even decide it's skull function, yes?
Well we can scale from Allosaurus. And welcome to the forum enjoy your stay :D
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TheMechaBaryonyx789
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Saurophaganax is roughly 11 metres and ~3-4 tons in weight, while Tyrannosaurus (the largest specimen aka Sue) is roughly 12 metres and ~7-8 tons in weight. I personally don't see how this could be an even fight.
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Jaws
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SpinoInWonderland
Dec 15 2012, 10:33 PM
Saurophaganax is about the same size as Tyrannosaurus or even larger
sauro is 4 t t rex is 9.5 t
this is a mismatch t rex wins this with ease
Edited by Jaws, Oct 2 2015, 10:25 AM.
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Jiggly Mimus
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HAHAHAHAHA 9.5 tons! More like 6.5-7. Unless there is a new study.
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zergthe
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The saurophaganx doesn't stand a chance against tyrannosaurus. 12,800 lbs of bite force is on the Rex's side.
Edit: Found one of my bad posts. Thanks, Jaws.
Edited by zergthe, May 11 2017, 02:02 AM.
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blaze
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@Jiggly Mimus
I suppose Jaws is indirectly referring to Hutchinson et al (2011) which yes, got 9.5t (metric) for Sue, which might be a little high but is right now more realistic than 6.5-7t, Hartman using GDI on his reconstruction got 8.4t and Larramendi got 8.2t with a GDI of his own skeletal.

Estimates in the 6-7t range for Sue only come from Greg Paul whose skeletal has several scaling mistakes and of course, being shrink-wrapped with concave gastralia, the other source for such a low weight are old femur-circumference equations, newer ones (Campione et al. 2014) suggest no less than 8t for a Sue-sized Tyrannosaurus, agreeing with volumetric estimates.

Other specimens were smaller yes but not that much smaller, adapting the top view silhouette that Hartman shared for his GDI of Sue I got 7.6t for CM 9380.
Edited by blaze, Oct 3 2015, 12:58 AM.
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Jaws
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zergthe
Oct 2 2015, 11:46 PM
The saurophaganx doesn't stand a chance against tyrannosaurus. 12,800 lbs of bite force is on the Rex's side.
nope 46000 newtons of bite
blaze
Oct 3 2015, 12:55 AM
@Jiggly Mimus <br />I suppose Jaws is indirectly referring to Hutchinson et al (2011) which yes, got 9.5t (metric) for Sue, which might be a little high but is right now more realistic than 6.5-7t, Hartman using GDI on his reconstruction got 8.4t and Larramendi got 8.2t with a GDI of his own skeletal. <br /><br />Estimates in the 6-7t range for Sue only come from Greg Paul whose skeletal has several scaling mistakes and of course, being shrink-wrapped with concave gastralia, the other source for such a low weight are old femur-circumference equations, newer ones (Campione et al. 2014) suggest no less than 8t for a Sue-sized Tyrannosaurus, agreeing with volumetric estimates.<br /><br />Other specimens were smaller yes but not that much smaller, adapting the top view silhouette that Hartman shared for his GDI of Sue I got 7.6t for CM 9380.
i thout t rex is 9.5 t blaze
Jiggly Mimus
Oct 2 2015, 10:59 PM
HAHAHAHAHA 9.5 tons! More like 6.5-7. Unless there is a new study.
9.5 t is more likely
Edited by Jaws, Oct 4 2015, 03:20 PM.
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DinosaurFan95
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T. rex, A. maximus dosn't stand a chance.
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blaze
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@Jaws

There is a 9.5t estimate but I think it's a little on the high side as demonstrated by other volumetric estimates with more realistic flesh covering being about 1t lighter but definitely 6.5-7t is out of the question for an specimen the size of Sue.
Edited by blaze, Oct 5 2015, 01:28 AM.
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Jaws
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blaze
Oct 5 2015, 01:28 AM
@Jaws

There is a 9.5t estimate but I think it's a little on the high side as demonstrated by other volumetric estimates with more realistic flesh covering being about 1t lighter but definitely 6.5-7t is out of the question for an specimen the size of Sue.
i wil settle for 8-9 t
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Megasaurus
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Jan 21 2014, 07:24 AM
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Full size version.

That's a 4-tonne Saurophaganax right there. You could probably squeeze it up to 5 tonnes by using MOR 693 ('Big Al') as a basis for scaling instead of DINO 2560, but either way it would be badly outmatched by an 8 tonne Tyrannosaurus like Sue there.
I agree
T rex wins it is bigger
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moldovan0731
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Jaws
Oct 5 2015, 04:58 AM
blaze
Oct 5 2015, 01:28 AM
@Jaws

There is a 9.5t estimate but I think it's a little on the high side as demonstrated by other volumetric estimates with more realistic flesh covering being about 1t lighter but definitely 6.5-7t is out of the question for an specimen the size of Sue.
i wil settle for 8-9 t
I think Scott Hartman's 8.4 tonne estimate is the best.
TheMechaBaryonyx789
May 27 2014, 05:08 PM
Saurophaganax is roughly 11 metres and ~3-4 tons in weight, while Tyrannosaurus (the largest specimen aka Sue) is roughly 12 metres and ~7-8 tons in weight. I personally don't see how this could be an even fight.
Sue is actually more like 12.3 metres and 8.4 tonnes.
Jiggly Mimus
Oct 2 2015, 10:59 PM
HAHAHAHAHA 9.5 tons! More like 6.5-7. Unless there is a new study.
No, it's more like 8.4 tonnes (based on Scott Hartman).
Edited by moldovan0731, May 11 2017, 12:44 AM.
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bone crusher
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At this point T Rexes like Sue, Trix and Scotty are all 8.something tonne monsters that belong in a league of their own, I don't see any other theropod of the non fragment specimen come close to challenge them. As for Saurophaganax, maybe a sub adult rex in the 3-4 tonne range could be more equal.
Edited by bone crusher, May 11 2017, 02:57 AM.
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Black Panther
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Giganotosaurus, carcharadontosaurus, mapusaurus, and Tyrannotitan all rival T.rex in weight and length.
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bone crusher
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In length sure, but not in weight, not even close. The largest reliable specimen from those are actually well under 7 tons by using GDI calculation.
carcharadontosaurus "6325 kg"
http://franoys.deviantart.com/journal/Mathematical-analysis-on-Carcharodontosaurus-mass-661837965

Tyrannotitan "6400 kg"
http://sta.sh/02g14hls5mf7

Giganotosaurus "6838 kg"
http://franoys.deviantart.com/journal/A-mathematical-analysis-on-Giganotosaurus-mass-659861738

Mapusaurus from the look of things don't weigh any heavier either.
http://franoys.deviantart.com/art/Mapusaurus-roseae-skeletal-diagram-665544500

How can you pit those 6.3-6.8 t underweights against 8.2-8.4 t t rex specimens such as Sue, Trix or Scotty? Even the holotype 7.5 t would wipe the floor with them. Perhaps the amnh 5027 specimen at 6.5- 6.8 t could be more suitable.
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