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| Allosaurus fragilis v Majungasaurus crenatissimus | |
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| Tweet Topic Started: Jul 3 2012, 05:18 PM (7,422 Views) | |
| Taipan | Jul 3 2012, 05:18 PM Post #1 |
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Allosaurus fragilis 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). ![]() Majungasaurus crenatissimus Majungasaurus (pronounced /məˌdʒʌŋɡəˈsɔrəs/ mah-JUNG-gə-SOR-əs "Mahajanga lizard") is a genus of abelisaurid theropod dinosaur that lived in Madagascar from 70 to 65 million years ago, at the end of the Cretaceous Period. Only one species (M. crenatissimus) has been identified. This dinosaur was briefly called Majungatholus, a name which is now considered a junior synonym of Majungasaurus. Like other abelisaurids, Majungasaurus was a bipedal predator with a short snout. Although the forelimbs are not completely known, they were very short, while the hindlimbs were longer and very stocky. It can be distinguished from other abelisaurids by its wider skull, the very rough texture and thickened bone on the top of its snout, and the single rounded horn on the roof of its skull, which was originally mistaken for the dome of a pachycephalosaur. It also had more teeth in both upper and lower jaws than most abelisaurids. Majungasaurus was a medium-sized theropod that typically measured 6–7 meters (20–23 ft) in length, including its tail. Fragmentary remains of larger individuals indicate that some adults reached lengths of more than 8 meters (26 ft). Scientists estimate that an average adult Majungasaurus weighed more than 1100 kilograms (2400 lb), although the largest animals would have weighed more. Its 8–9 meter (26–30 ft) relative Carnotaurus has been estimated to weigh 1500 kilograms (3300 lb). ![]() ____________________________________________________________
Edited by Taipan, Nov 13 2016, 02:11 PM.
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| theropod | Nov 14 2012, 01:07 AM Post #31 |
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palaeontology, open source and survival enthusiast
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Average Allosaurus is 8.5-9m and easily larger than fragillimus figures, 1,5t was an intermediately liberal figure for big al actually, which wasn´t even fully grown. The largest A. fragilis excluding Epanterias is 9,7m and ~2,5t. Mahjungasaurus maxed out at around 8m, and even tough it is bulky it would have a large size disadvantage. All it has is bulk, which is of no use for it here, and a stronger bite force. |
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| SpinoInWonderland | Nov 14 2012, 11:33 PM Post #32 |
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The madness has come back...
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![]() (click image for a larger view) Majungasaurus = 7 meters long Allosaurus = 9 meters long Allosaurus would destroy Majungasaurus for sure... |
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| theropod | Nov 15 2012, 01:03 AM Post #33 |
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palaeontology, open source and survival enthusiast
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that looks more drastic than I imagined it. could you make a maximum vs maximum version (8 vs 9,7) tzo see whether it looks different? Btw this one is another one of hartmans drawings with extremely strange proportions, might he have mixed up the legs of a smaller specimen with other remains of larger ones again like he appearantly did in Torvosaurus? if the proportions are like this the Mahjungasaurus get´s destroyed |
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| Vivyx | May 3 2013, 03:24 AM Post #34 |
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Felines, sharks, birds, arthropods
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Mismatch, Allosaurus is too big. It wins. |
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| Temnospondyl | May 4 2013, 07:19 PM Post #35 |
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Stegocephalia specialist.
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No one wins, the size is too diferrennt. They both wouldn't care about each other. |
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| Makaveli7 | Aug 10 2013, 07:08 PM Post #36 |
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Heterotrophic Organism
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Allosaurus is bigger, faster, stronger, has functional arms and a deadlier bite. Majungasaurus was cool looking and tough all but its short skull, short arms and short legs would ultimately hinder it in this fight. |
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| Ausar | Aug 11 2013, 01:39 AM Post #37 |
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Xi-miqa-can! Xi-miqa-can! Xi-miqa-can!
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If going by broly's scale, Allosaurus looks like it is in a perfect position to either bite, or axe-bite. And I've read Majungasaurus actually didn't have a powerful bite. |
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| Godzillasaurus | Aug 11 2013, 04:30 AM Post #38 |
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Reptile King
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Allosaurus wins. It was potentially larger and heavier, and had much deadlier weapons. |
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| retic | Aug 11 2013, 07:56 AM Post #39 |
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snake and dinosaur enthusiast
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allosaurus wins since it is larger and it has better weaponry. |
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| The Reptile | Jun 18 2014, 04:54 AM Post #40 |
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Herbivore
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Neither did allosaurus, but it was simply the much better designed for killing large animals. Abelisaurids are heavily overrated IMO; their dentition was not particularly long proportionally nor were their jaws very large. I have heard theories that they may have killed with repeated quick biting, as this killing style would compensate for their lack of large jaws and dentition as we see in allosaurus, but allosaurus was a very highly specialized animal for quick and violent killing as opposed to the killing style we would expect to see in abelisaurids (allosaurs were highly adaptive for causing immense ripping trauma, so whether or not the feeding apparata of abelisaurids would be a match for it is up to debate). Edited by The Reptile, Jun 18 2014, 04:55 AM.
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| Ausar | Jun 18 2014, 06:48 AM Post #41 |
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Xi-miqa-can! Xi-miqa-can! Xi-miqa-can!
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Well, that it didn't have a particularly powerful bite is well established in this section of the forum, and I'm no exception. |
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| The Reptile | Jun 18 2014, 06:52 AM Post #42 |
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Herbivore
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Well I feel as if bite force arguments are rather dull and baseless anyway, because having a powerful biting force and a cranial anatomy that allows such powerful jaw muscules does not make you the more successful predator at all |
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| Megasaurus | Nov 13 2016, 03:52 AM Post #43 |
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Heterotrophic Organism
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Allosaurus destroy majungasaurus allosaurus-bigger,stronger,taller,agiler,better wepons-hands and claws and bigger head with axe bite |
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| Carnotaur | Nov 13 2016, 06:25 AM Post #44 |
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Saprotrophic Organism
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I would favor an abelisaur over an allosaurid at similar sizes,but here the size difference is simply enormous(+8,5m long theropod vs a 5,5 meters long one). Something about Majungasaurus` bite force:Therrien et al estimated the bite force of Carnotaurus to be twice as powerful as that of an American Alligator.Since the skull of Majungasaurus was very similar to that of Carnotaurus,and had a similar size, it is logical to assume it would have a similar bite force. Edited by Carnotaur, Nov 13 2016, 06:46 AM.
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| Soopairik | Oct 16 2017, 09:01 AM Post #45 |
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Carnoferox's sex toy
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Hypothetical battle so just roll with it. |
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