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| Deinosuchus v Tyrannosaurus rex | |
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| Topic Started: Mar 12 2012, 08:26 PM (5,646 Views) | |
| Taipan | Mar 12 2012, 08:26 PM Post #1 |
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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.  Deinosuchus rugosus Deinosuchus is an extinct genus related to the alligator that lived 73 to 80 Ma (million years ago), during the late Cretaceous period. The name translates as "terrible crocodile" and is derived from the Greek deinos (δεινός), "terrible", and soukhos (σοῦχος), "crocodile". The first remains were discovered in North Carolina (United States) in the 1850s; the genus was named and described in 1909. Additional fragments were discovered in the 1940s and were later incorporated into an influential, though inaccurate, skull reconstruction at the American Museum of Natural History. Knowledge of Deinosuchus remains incomplete, but better cranial material found in recent years has expanded scientific understanding of this massive predator. Although Deinosuchus was far larger than any modern crocodile or alligator—measuring up to 12 m (39 ft) and weighing up to 8.5 metric tons (9.4 short tons)—in overall appearance it was fairly similar to its smaller relatives. It had large, robust teeth that were built for crushing, and its back was covered with thick hemispherical osteoderms. One study indicates that Deinosuchus may have lived for up to 50 years, growing at a rate similar to that of modern crocodilians, but maintaining this growth over a much longer period of time. Deinosuchus was probably capable of killing and eating large dinosaurs. It may have also fed upon sea turtles, fish, and other aquatic and terrestrial prey.  A Deinosuchus lunges at an Albertosaurus in an artist's conception. _____________________________________________________________________________
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| DinosaurMichael | Mar 12 2012, 11:33 PM Post #2 |
 
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I vote for Deinosuchus both on land and in water. Since T-Rex was a very unstable animal due to walking on two legs that will put it at a disavantage. So if Deinosuchus get's a hold of one of T-Rex's feet and make it fall. That would be fatal and therefore Deinosuchus would win.
Edited by DinosaurMichael, Mar 13 2012, 11:29 AM.
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Other sites I'm a member on. http://www.youtube.com/user/Dinospikester http://www.fanfiction.net/u/1613752/CrossoverMike http://mikespikester11.deviantart.com/ | |
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| 7Alx | Mar 13 2012, 04:20 AM Post #3 |
 
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In water:winner is Deinosuchus (95 % chance) In land: winner is Tyrannosaurus (70 % chance) |
 No animal sucks, excluding people who hate any kind of animals. My devianART page | |
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| Bright Nights | Mar 13 2012, 11:25 AM Post #4 |
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I vote Tyrannosaurus rex. While it's true T. rex would be the more unstable animal in a fight, that factor is mitigated somewhat by the limited movement and stance of the crocodile itself. I'm not sure about the bite strength of the crocodile either. I think Tyrannosaurus rex's bite could be useful for attacking the legs or tail on its low-lying opponent. |
| "When people thought the earth was flat, they were wrong. When people thought the earth was spherical, they were wrong. But if you think that thinking the earth is spherical is just as wrong as thinking the earth is flat, then your view is wronger than both of them put together." - Isaac Asimov | |
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| TheROC | Mar 13 2012, 03:47 PM Post #5 |
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 Should be a comfortable win for Deinosuchus. By scaling, not only should it have a more powerful bite, but its more stable and has a lower center of gravity. The question of agility is moot in my opinion. T.Rex in and of itself, as were all theropods, were very slow turners. It would have to circle around the alligator in order to find a safe place to bite, and I don't believe it can do that quicker than Deinosuchus can simply turn in place--especially since Deinosuchus is a quadruped. The way I imagine the fight going, the T.Rex will try to circle around to the Gator's flanks, while the latter simply turns in place to keep face to face with the theropod. Leaving the former with little choice but to try a frontal assault. The problem being is that if it wishes to bite, it has to bring its head down to Deinosuchus' level, while the latter can simply look up with its jaws open. If the two lock mouths, the Deinosuchus' lower center of gravity and known evolutionary ability to drag prey down and back, will give it the advantage. It will pull the T.Rex down, as the latter will not be able to pull up and back from the weight of an animal just as heavy or heavier than itself, that is lower to the ground with its center of gravity, and pulling back on its own. If the T.Rex tries to put one foot on the Deinosuchus or something, it puts its already precarious balance in greater jeopardy, as it is sure to lose its footing with a thrashing crocodilian under it. |
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| Superpredator | Mar 13 2012, 06:07 PM Post #6 |
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Deinosuchus takes this. Being a crocodillian it would have a VERY strong bite, even stronger than T.rex. Up to 4,000lbf.
http://en.wikipedia.org/wiki/Deinosuchus And crocodillians are not INCREDIBLY slow like some people think as
http://animal.discovery.com/convergence/safari/crocs/expert/expert2.html I know Deinosuchus was WAY bigger but the croc actually went a fair speed for a 4mtr animal. And when they strike from the water they go faster, I would NOT like to think what would happen. So the Deinosuchus could turn around pretty fast and make sure the dinosaur can't reach it's vital organs. And there is also evidence of Deinosuchus preying on tyrannosaurids.
http://news.nationalgeographic.com/news/2010/03/100323-giant-croc-crocodile-dinosaurs-deinosuchus-feces-poop/ I know it was probably by ambush and the tyrannosaurs killed were smaller than T.rex but if it CAN and HAS killed tyrannosaurs before, it could probably kill this one. The crocodile also has POWERFUL armour that would could take quite a few bites from predators.
http://en.wikipedia.org/wiki/Deinosuchus The crocodile is HUGE and it could deal some MAJOR damage. I vote Deinosuchus for speed(not much but probably enough to keep it safe from the dinosaur version of 'jaws'), armour and sheer power. I've only highlighted some of the croc's power but the dinosaur would DEFINITELY be in the same group as the croc. The T.rex won't go down without a fight so this croc will have his work cut out for him. Deinosuchus wins 7/10. |
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| coherentsheaf | Mar 13 2012, 09:14 PM Post #7 |
Speak of the devil and nothing shall happen.
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Regarding the biteforce of deinosuchus: As far as I know, no proper study has been done. If I take the beak bite forces measured for alligators in the Erickson studies, and use isometric scaling or use allometric equations governing ontogenetic bite force in alligators, I arrive at very high bite forces of 100 000 - 200 000 N, which is higher than the latest bite force estimates for T-rex and probably rivals large Megalodon (However, the very specuative nature of Megalodon renders us unable to comment in detail). However it is unclear wheter Deinosuchus could bite proportionally strong or even stronger than its living relatives. |
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"... grains are falling, haphazard, random, a disorganized stream of silicone that seems pregnant with the possibility of any conceivable shape. But this is illusion. Things have their shape in time, not space alone. Some marble blocks have statues within them, embedded in their future." The Queen: "Now, here, you see, it takes all the running you can do, to keep in the same place. If you want to get somewhere else, you must run at least twice as fast as that!" | |
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| Bright Nights | Mar 13 2012, 11:30 PM Post #8 |
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I think the bite force difference is stressed to much. Tyrannosaurus still had a VERY powerful bite, even if it wasn't as powerful as Deinosuchus. And it was also more versatile.....chomping down, slicing AND crushing. Deinosuchus may well be able to chomp on a leg or tail, but this is rather inefficient. T. rex would have to be down and out. It would be a close match, but I still favor the therapod because of the higher vantage point. |
| "When people thought the earth was flat, they were wrong. When people thought the earth was spherical, they were wrong. But if you think that thinking the earth is spherical is just as wrong as thinking the earth is flat, then your view is wronger than both of them put together." - Isaac Asimov | |
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| Wolf Eagle | Mar 14 2012, 01:36 AM Post #9 |
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Based on the size comparison (if it's somewhat accurate), I think the Deinosuchus has a good chance of winning here. |
~~~MP~~~
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| TheROC | Mar 14 2012, 05:29 AM Post #10 |
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The higher stance in this instance can't really be termed an advantage in this case. The T.Rex has to lower itself in order to get a bite, and that favors the crocodilian. And let's talk about agility once more; compare large nile crocs vs single lions today. The feline body plan is better built for agility than the theropod body plan, even at equivalent sizes, and yet it isn't exactly easy for a lion to outflank a crocodile--they are explosive creatures afterall, and they are able to quite readily turn suddenly in place to face the lion. |
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| Apex | Mar 14 2012, 05:35 AM Post #11 |
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dont forget the tail whip aswell crocodilians are IMENSLY powerful even small ones and the 2 weapons is better than one a tail whip to the rexs legs or ribs would be very damaging |
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| coherentsheaf | Mar 14 2012, 05:50 AM Post #12 |
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Speak of the devil and nothing shall happen.
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I doubt that Deinosuchus could turn as easily on land as modern crocodiles: "Femoral dimensions predict that the larger specimen of Deinosuchus (Table 4) had a TL of 6-8 m. In contrast, comparing the dimensions of an incomplete lower jaw of the larger specimen with the complete jaw and skull of a slightly smaller individual (TMM 43620-1) yields a TL estimate of 10-11 m for the larger specimen (Table 4). Erickson and Brochu (1999) estimated that Deinosuchus reached lengths of 8-10 m, and Schwimmer (2002) thought that the biggest individuals were as much as 12 m long. If the discrepancy between our two length estimates is not an artifact of applying regression equations to specimens much larger than those used to create the equations, and is not due to the unlikely (we believe) possibility that two individuals of different size are mixed in the larger specimen, then Deinosuchus must have reduced the size of its femur relative to overall body size, as compared with alligators." This article used the femoral dimension of Deinosuchus to estimate its length and came up with an underestimate, indicating relatively shorter legs. Source: James O. Farlow, Grant R. Hurlburt, Ruth M. Elsey, Adam R. C. Britton & Wann Langston Jr. (2005). "Femoral dimensions and body size of Alligator mississippiensis: estimating the size of extinct mesoeucrocodylians" Edited by coherentsheaf, Mar 14 2012, 05:51 AM.
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"... grains are falling, haphazard, random, a disorganized stream of silicone that seems pregnant with the possibility of any conceivable shape. But this is illusion. Things have their shape in time, not space alone. Some marble blocks have statues within them, embedded in their future." The Queen: "Now, here, you see, it takes all the running you can do, to keep in the same place. If you want to get somewhere else, you must run at least twice as fast as that!" | |
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| TheROC | Mar 14 2012, 06:01 AM Post #13 |
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Well certainly Deinosuchus wouldn't turn as well as a modern croc. By virtue of the square cube law alone, it couldn't. But my point was that the T.Rex isn't better off in that regard either. At modern scales a lion doesn't have an easy time outflanking a crocodile, if the prehistoric crocodilian has shorter limbs proportionately and larger body size in general working against it for agility, the t.rex has body size and body plan working against it for agility. Edited by TheROC, Mar 14 2012, 06:04 AM.
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| Taipan | Jun 2 2012, 09:57 PM Post #14 |
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Here it is! |
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| Megafelis Fatalis | Jun 2 2012, 11:34 PM Post #15 |
Prehistoric Cat - Megafelis Fatalis
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Tyrannosaurus = ~ 12.8m - Deinosuchus = ~ 12m Tyrannosaurus by Scott Hartman - Deinosuchus by SameerPrehistorica 
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Prehistoric Cat - Megafelis Fatalis PaleoArt Blog - CarnivoraForum 
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