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Who wins?
Allosaurus fragilis (Pack of 5) 6 (100%)
Spinosaurus aegyptiacus 0 (0%)
Total Votes: 6
Allosaurus fragilis (Pack of 5) v Spinosaurus aegyptiacus
Topic Started: Oct 25 2012, 09:11 PM (19,009 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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Archer250
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Well a pack of Allosaurus would have probably hunted sauropods, so the Spinosaurus being bigger than 5 Allosauruses wouldn't have mattered much.
Edited by Archer250, Oct 25 2012, 09:16 PM.
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FireCrown
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If those allosaurus evade those giant claws of spino they are fine
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Megafelis Fatalis
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I think 5 are enough to beat Spinosaurus
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SpinoInWonderland
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The Allosaurus pack would win
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Jinfengopteryx
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I think usually smaller predators don't have much chance against bigger ones in packs, but I think here they can win.
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Mauro20
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The Allosaurus pack wins.
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Fragillimus335
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Are we talking 1.5 ton Allosaurus f.? If so, this fight is comparable to five 110lb wolves attacking a 1200lb polar bear. Bear wins, and Spino probably would too.
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Carcharadon
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Fragillimus335
Oct 26 2012, 04:45 AM
Are we talking 1.5 ton Allosaurus f.? If so, this fight is comparable to five 110lb wolves attacking a 1200lb polar bear. Bear wins, and Spino probably would too.
Allosaurus is 2 tons

Anyways the allo pack wins they would destroy the spino
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Archer250
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Fragillimus335
Oct 26 2012, 04:45 AM
Are we talking 1.5 ton Allosaurus f.? If so, this fight is comparable to five 110lb wolves attacking a 1200lb polar bear. Bear wins, and Spino probably would too.
A pack of lions can take down an elephant. A pack of Allosaurs can also probably take down a sauropod. Why would you think that spinosaurus would win?
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Scalesofanubis
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A pack of five should be able to do the deed. They have the weaponry to carve into the spinosaur and bleed it, and could latch on with their front claws some place out of reach and do a lot of damage with their jaws. They will bleed the spinosaur out over the long term.
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Fragillimus335
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Archer250
Oct 26 2012, 08:45 AM
Fragillimus335
Oct 26 2012, 04:45 AM
Are we talking 1.5 ton Allosaurus f.? If so, this fight is comparable to five 110lb wolves attacking a 1200lb polar bear. Bear wins, and Spino probably would too.
A pack of lions can take down an elephant. A pack of Allosaurs can also probably take down a sauropod. Why would you think that spinosaurus would win?
Ummmm... Not a pack of five lions....more like 30+

Also, everyone here seems to overestimate Allosaurus's size, the median weight of adults is ~1.2 tons, large adults were ~1.5 tons, and the largest ever found was 2.3 tons.
Edited by Fragillimus335, Oct 26 2012, 12:33 PM.
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Carcharadon
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Fragillimus335
Oct 26 2012, 12:33 PM
Also, everyone here seems to overestimate Allosaurus's size, the median weight of adults is ~1.2 tons, large adults were ~1.5 tons, and the largest ever found was 2.3 tons.
A large adult would weigh 1.5 ton? Highly doubt it. I rather thought an average allosaurus weighed 2 tons
Edited by Carcharadon, Oct 26 2012, 12:48 PM.
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theropod
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The largest of the traditional A. fragilis specimens was 2,3t and the average was 8,5-9m, thus 1,54-1,83t in weight. this is not accounting for giant specimens possibly synonymous with allosaurus.

On average I do think it is close to 50/50 with a slight edge towards the allosaurs because they are simply perfectly adapted for killing large animals, with very sharp dentition, wide gape and great power in the neck muscles.

Larger specimens of allosaurus fragilis would have a relatively good change (60/40-70/30), and 5 epanterias take this easily.
Edited by theropod, Oct 26 2012, 07:12 PM.
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Verdugo
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Allosaurus wins IMO, Spinosaurus is really overrated. 3 Albertosaurus can match with T rex, while it is need up to 5 Allosaurus (which are almost as big as Albertosaurus) to match with Spinosaurus. Spinosaurus would be destroy in seconds, Allosaurus speed, weaponry and number are too overwhelm
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