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| Spinophorosaurus nigerensis v Acrocanthosaurus atokensis | |
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| Tweet Topic Started: Aug 3 2013, 10:14 PM (3,532 Views) | |
| Taipan | Aug 3 2013, 10:14 PM Post #1 |
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Spinophorosaurus nigerensis Spinophorosaurus (meaning 'spine-bearing lizard') is a genus of early sauropod dinosaur from Niger. It was recovered in a rock formation belonging to the lower part of the Irhazer Group, the age of which is unknown but may be Middle Jurassic or older. It is unusual for having spiked osteoderms, probably from the tail, similar to the famed thagomizer of stegosaurs. The type species, S. nigerensis, was described by Remes et al. in 2009. A study of its braincase showed that its neuroanatomy was in some ways intermediate between that of basal sauropodomorphs and that of neosauropods. Size est. Length: 14 meters: Height: 4 meters: Mass: 15 tonnes. ![]() Acrocanthosaurus atokensis Acrocanthosaurus is a genus of theropod dinosaur that existed in what is now North America during the Aptian and early Albian stages of the Early Cretaceous. Like most dinosaur genera, Acrocanthosaurus contains only a single species, A. atokensis. Its fossil remains are found mainly in the U.S. states of Oklahoma, Texas, and Arkansas, although teeth attributed to Acrocanthosaurus have been found as far east as Maryland. Acrocanthosaurus was a bipedal predator. As the name suggests, it is best known for the high neural spines on many of its vertebrae, which most likely supported a ridge of muscle over the animal's neck, back and hips. Acrocanthosaurus was one of the largest theropods, approaching 12 meters (40 ft) in length, and weighing up to 6–7 metric tons (6.5–7.5 short tons). Large theropod footprints discovered in Texas may have been made by Acrocanthosaurus, although there is no direct association with skeletal remains. Recent discoveries have elucidated many details of its anatomy, allowing for specialized studies focusing on its brain structure and forelimb function. Acrocanthosaurus was the largest theropod in its ecosystem and likely an apex predator which possibly preyed on large sauropods and ornithopods. ![]() ______________________________________________________________________________
Based on T-Rex v Spinophorosaurus thread, lets try Acrocanthosaurus first! Edited by Taipan, Aug 3 2013, 10:20 PM.
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| SpinoInWonderland | Aug 3 2013, 11:56 PM Post #2 |
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The madness has come back...
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The Spinophorosaurus would have the advantage. Why? It is much larger, in all ways possible, and much stronger. The sauropod's more robust body would allow it to exert force more effectively. With multi-tonne animals, size differences can be one of the biggest factors. If the Spinophorosaurus collides with the Acrocanthosaurus, the chances are good that the carnosaur would be knocked don, and be vulnerable to getting crushed by the sauropod. If the Acrocanthosaurus attacks from the frontal areas, the Spinophorosaurus can rear up, allowing it to kick the theropod with it's forelegs, and the increased height would intimidate the theropod. If the theropod attack from the rear areas, it gets a thagomizer strike on the face. if the theropod attacks from the sides, the sauropod can turn to face either it's front or rear at it, or it can rear up to intimidate the theropod. |
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| Carcharadon | Aug 4 2013, 12:14 AM Post #3 |
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Shark Toothed Reptile
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I don't believe that awkward 15 tonne estimate for spinophorosaurus. A 14 m long sauropod at that weight would rather have an extremely fat torso and would probably struggle to move around, which would be THE fat sausage, more so than a 9.5 ton t.rex. I don't even see how spinophorosaurus should have such an enormous size advantage over acrocanthosaurus, given it was only like 2 meters longer. I give this to acrocanthosaurus, i believe it is tall enough to get a bite onto the sauropod's neck. If spinophorosaurus rears up, then the acro could back off, and then when the sauropod comes down back on the ground then acro can make its attack. |
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| SpinoInWonderland | Aug 4 2013, 12:27 AM Post #4 |
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The madness has come back...
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It may be able to, but the Spinophorosaurus isn't just gonna present it's neck for the carnosaur to bite. |
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| Jinfengopteryx | Aug 4 2013, 12:55 AM Post #5 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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I take that back, he still seems to believe in that 15 t crap (judging from his 7-9 t size advantage post). I have already proven why his source isn't good (it lists things like wiki in it's source-list) Size is important in such battles, but not all, otherwise carnosaurs couldn't even hunt sauropods. Edited by Jinfengopteryx, Aug 4 2013, 12:58 AM.
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| Carcharadon | Sep 9 2013, 12:45 AM Post #6 |
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Shark Toothed Reptile
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*bump* I thought this thread was gonna attract more interest. |
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| SpinoInWonderland | Sep 9 2013, 12:54 AM Post #7 |
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The madness has come back...
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It's because the stock dinosaurs are leeching way too much attention... |
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| thesporerex | Sep 9 2013, 01:58 AM Post #8 |
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Kleptoparasite
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I back the acrocanthosaurus in this fight, but I am not sure
Edited by thesporerex, Sep 9 2013, 02:02 AM.
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| Makaveli7 | Sep 9 2013, 08:25 AM Post #9 |
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Heterotrophic Organism
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I voted for the Spinophorosaurus on accident... Anyway, Acrocanthosaurus has super sharp teeth, great power of its own and mobility over the Spinophorosaurus. But the Spinophorosaurus has size, power, stability, a thagomizer and a powerful tail driving the weapon. I see Spinophorosaurus crushing or tail whipping the theropod fairly often but most of the time I think Acrocanthosaurus could tear open the Spinophorosaurus' neck. 50/50 with a slight edge to Acrocanthosaurus, maybe. I don't know. Edited by Makaveli7, Sep 9 2013, 08:27 AM.
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| Maximus | Apr 10 2016, 09:58 PM Post #10 |
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Heterotrophic Organism
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Acrocanthosaurus wins 80-90%. There is no way spinophosaurus is 14m long and weighs 15 tons at the most it would weigh 10 tons. Sauropods are very poor fighters for their size. The only weapon it has is a small tail spike compared to acro's huge jaws and razor sharp teeth capable of tearing massive chunks of flesh. It is also much faster and agiler than the sauropod and would be capable of avoiding the thagomizer and biting the long, vulnerable neck, killing the sauropod. |
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| Drift | Aug 3 2016, 02:36 AM Post #11 |
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High Spined Lizard
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Agreed,It really makes no sense imo for predator/prey relationships to make their way into these matches,This is no different than the Ankylosaur/Tyrannosaur match to be honest.The herbivore seldom can hold its own unless it's ceratopsidae the majority of the time.Acrocanthosaurus wins this. |
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| Megasaurus | Jan 15 2017, 09:09 PM Post #12 |
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Heterotrophic Organism
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![]() I think acro wins 60/40 Yes sauropod is bigger and it has club but Acro is adapted on killing sauropods,it can attack on neck |
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| Maximus | Dec 9 2017, 05:14 PM Post #13 |
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Heterotrophic Organism
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Agree with you that these matches are pointless. Acro was designed to kill large sauropods and it looks like the spinophosaurus is a lot smaller than the sauropods acro would have hunted. |
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| Jinfengopteryx | Jan 14 2018, 08:56 PM Post #14 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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I forgot to say that I favour Acrocanthosaurus (if that was not obvious from my post). |
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| Acrocanthosaurus | Jan 16 2018, 09:26 PM Post #15 |
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Unicellular Organism
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I'm sure my prejudice is obvious based on the name, but I sincerely do think the Acro can take it. It had a powerful enough build for an impressive charge, and even with a club it would take forever for a sauropod to take on a predator of that size, and it (the sauropod) has plenty of vulnerable spots and could be bled out by a carcharodontosaurid that was known to hunt similar prey. If I were to be bolder I'd say these two would be almost in a predator-prey relationship, even with a fully grown sauropod. |
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