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Allosaurus fragilis (Pack of 5) v Spinosaurus aegyptiacus
Topic Started: Oct 25 2012, 09:11 PM (19,010 Views)
DinosaurMichael
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Allosaurus fragilis (Pack of 5)
Allosaurus (play /ˌælɵˈsɔrəs/) is a genus of large theropod dinosaur that lived 155 to 150 million years ago during the late Jurassic period (Kimmeridgian to early Tithonian). Allosaurus was a large bipedal predator. Its skull was large and equipped with dozens of large, sharp teeth. It averaged 8.5 meters (28 ft) in length, though fragmentary remains suggest it could have reached over 12 meters (39 ft). Relative to the large and powerful hindlimbs, its three-fingered forelimbs were small, and the body was balanced by a long, heavy tail. As the most abundant large predator in the Morrison Formation, Allosaurus was at the top of the food chain, probably preying on contemporaneous large herbivorous dinosaurs and perhaps even other predators (e.g. Ceratosaurus). Potential prey included ornithopods, stegosaurids, and sauropods. Allosaurus was a typical large theropod, having a massive skull on a short neck, a long tail and reduced forelimbs. Allosaurus fragilis, the best-known species, had an average length of 8.5 meters (28 ft), with the largest definitive Allosaurus specimen (AMNH 680) estimated at 9.7 meters long (32 ft), and an estimated weight of 2.3 metric tons (2.5 short tons). In his 1976 monograph on Allosaurus, James Madsen mentioned a range of bone sizes which he interpreted to show a maximum length of 12 to 13 meters (40 to 43 ft). As with dinosaurs in general, weight estimates are debatable, and since 1980 have ranged between 1500 kilograms (3300 lb), 1000 to 4000 kilograms (2200 to 8800 lb), and 1010 kilograms (2230 lb) for modal adult weight (not maximum). John Foster, a specialist on the Morrison Formation, suggests that 1000 kg (2200 lb) is reasonable for large adults of A. fragilis, but that 700 kg (1500 lb) is a closer estimate for individuals represented by the average-sized thigh bones he has measured. Using the subadult specimen nicknamed "Big Al", researchers using computer modelling arrived at a best estimate of 1,500 kilograms (3,300 lb) for the individual, but by varying parameters they found a range from approximately 1,400 kilograms (3,100 lb) to approximately 2,000 kilograms (4,400 lb).

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This picture will be used from now on when more than 1 Allosaurus is requested in a fight.

Spinosaurus aegyptiacus
Spinosaurus is a genus of theropod dinosaur which lived in what is now North Africa, from the lower Albian to lower Cenomanian stages of the Cretaceous period, about 112 to 97 million years ago. Spinosaurus may be the largest of all known carnivorous dinosaurs, even larger than Tyrannosaurus and Giganotosaurus. Estimates published in 2005 and 2007 suggest that it was 12.6 to 18 metres (41 to 59 ft) in length and 7 to 20.9 tonnes (7.7 to 23.0 short tons) in weight. The skull of Spinosaurus was long and narrow like that of a modern crocodilian. Spinosaurus is thought to have eaten fish; evidence suggests that it lived both on land and in water like a modern crocodilian. The distinctive spines of Spinosaurus, which were long extensions of the vertebrae, grew to at least 1.65 meters (5.4 ft) long and were likely to have had skin connecting them, forming a sail-like structure, although some authors have suggested that the spines were covered in fat and formed a hump. Multiple functions have been put forward for this structure, including thermoregulation and display. Dal Sasso et al. (2005) assumed that Spinosaurus and Suchomimus had the same body proportions in relation to their skull lengths, and thereby calculated that Spinosaurus was 16 to 18 meters (52 to 59 ft) in length and 7 to 9 tonnes (7.7 to 9.9 short tons) in weight. The Dal Sasso et al. estimates were criticized because the skull length estimate was uncertain, and (assuming that body mass increases as the cube of body length) scaling Suchomimus which was 11 meters (36 ft) long and 3.8 tonnes (4.2 short tons) in mass to the range of estimated lengths of Spinosaurus would produce an estimated body mass of 11.7 to 16.7 tonnes (12.9 to 18.4 short tons).

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Dark allosaurus
Oct 25 2012, 08:48 AM
3-6 allosaurus or as much needed vs spinosaurus
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Drift
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Hatzegopteryx
Dec 11 2014, 08:23 AM
Allosaurus fragilis will win this.
Agreed due to the points that have already been stated.
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Teratophoneus
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Allosaurus will win this fight.
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Dogs rule
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Allosaurus wins but it would be tough some would die
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Megasaurus
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5 Allosaurus wins but some die
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TheBatmeme368
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I support pack here, Spinosaurus is "only" about 4 times larger than an individual and the packs numbers should be enough to inflict some serious damage. The pack would also be experienced in taking down animals larger than itself. Though it would take more than five to bring down a sauropod, Spinosaurus is much smaller than such a creature.

I would support the "old" Spinosaurus over this pack though, simply because of it's size advantage and too few numbers.
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Thalassophoneus
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I voted for Allosaurus. It must have been kinda swifter and it had more robust jaws.
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Soopairik
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I would agree with Thassa over here. Allosaurus may be smaller, but outclasses the Spino in other categories.
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MarlinMan133
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It would take like 2 Allosaurus to win, Allosaurus stomps.
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Mammuthus
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Here s a scaled comparison I made:

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I just can't see the spinosaurus winning here.

It just isn't manoeuvrable enough to keep up with the pack, nor does it posses the weaponry to kill them all efficiently.
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SuetheRex
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Big allosaurus speciemens could reach 3000 kg. Considering adults at 2400 kg we have 12000 kg of Allosaurus vs at best 7500 kg of Spinosaurus... i mean... 5 Allosaurus would be too much even for a T rex or a Giganotosaurus (each much better fit for this combat)... Allosaurus takes this basically all the times
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