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| Utahraptor ostrommaysorum v Kentrosaurus aethiopicus | |
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| Tweet Topic Started: Sep 21 2012, 08:46 PM (4,829 Views) | |
| DinosaurMichael | Sep 21 2012, 08:46 PM Post #1 |
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Apex Predator
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Utahraptor ostrommaysorum Utahraptor (meaning "Utah's predator" or "Utah thief") is a genus of theropod dinosaurs, including the largest known members of the family Dromaeosauridae. Fossil specimens date to the upper Barremian stage of the early Cretaceous period (in rock strata dated to 126 ± 2.5 million years ago). It contains a single species, Utahraptor ostrommaysorum. The holotype specimen of Utahraptor is fragmentary, consisting of skull fragments, a tibia, claws and some caudal (tail) vertebra. These few elements suggest an animal about twice the size of Deinonychus. Like other dromaeosaurids, Utahraptor had large curved claws on their second toes. One claw specimen is preserved at 22 centimetres (8.7 in) in length and is thought to reach 24 centimetres (9.4 in) restored. The largest described U. ostrommaysorum specimens are estimated to have reached up to 7 m (23 ft) long and somewhat less than 500 kg (1,100 lb) in weight, comparable to a grizzly bear in size. Some undescribed specimens in the BYU collections may have reached up to 11 m (36 ft) long, though these await more detailed study. Kentrosaurus aethiopicus Kentrosaurus is a genus of stegosaurid dinosaur from the Late Jurassic of Tanzania. Its fossils have been found only in the Tendaguru Formation of Tanzania, dated to the Kimmeridgian stage, between about 155.7 ± 4 Ma and 150.8 ± 4 Ma (million years ago). Apparently, all finds belong to one species, K. aethiopicus Hennig 1915. Kentrosaurus was described by German palaeontologist Edwin Hennig in 1915. Often thought to be a primitive member of the Stegosauria, several recent cladistic analyses find it to be derived, and a close relative to Stegosaurus from the North American Morrison Formation. Kentrosaurus generally measured around 4.5 metres (15 ft) in length as an adult, probably had a double row of small plates and spikes running down its back, and could use its tail as a "thagomizer" for defense. Kentrosaurus aethiopicus was a small stegosaur, smaller than Stegosaurus armatus, Hesperosaurus mjosi, Dacentrurus armatus and Tuojiangosaurus multispinus, and about as large as Huayangosaurus taibaii. The total length of a composite skeletal mount in the Museum für Naturkunde Berlin, Germany, from the tip of the snout to the tip of the tail is 4.5 m (15 ft). Slightly more than half of this length is made up by the tail. Larger single elements were found, so that the animal could probably attain a total length of 5.5 m (18 ft). The long tail of Kentrosaurus results in a position of the center of mass that is unusually far back for a quadrupedal animal. It rests just in front of the hip, a position usually seen in bipedal dinosaurs. ![]() ______________________________________________________________________
Edited by Taipan, Dec 4 2017, 08:34 PM.
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| Jinfengopteryx | Sep 22 2012, 07:05 PM Post #16 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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Quadrupeds are good spot turners, so it can turn and hit the Utahraptor with the spikes. |
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| Megafelis Fatalis | Sep 22 2012, 07:09 PM Post #17 |
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Carnivore
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Probably yes, but I don't think that the Stegosaur would success most of the time at killing the raptor with its tail |
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| theropod | Sep 22 2012, 07:19 PM Post #18 |
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palaeontology, open source and survival enthusiast
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usually prey wins most of the time, and an animal whose main defense is the tail HAS to be a good turner. Being good at circling, accellerating, outmaneuvering and leaping doesn´t mean you can outmaneuver something that can turn on the spot much better. |
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| Fishfreak | Sep 22 2012, 08:18 PM Post #19 |
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Friend of the fish
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![]() i'm not very good at scaling but this should be okay. the kentrosaurus is 5.5 m long cuz that was what wikipedia said was the max length. based on this utahraptor easily win imo |
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| Superpredator | Sep 22 2012, 08:19 PM Post #20 |
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Apex Predator
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Just for easy viewing:![]() Credit to Dinofreak337. Edited by Superpredator, Sep 22 2012, 08:19 PM.
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| Fishfreak | Sep 22 2012, 08:27 PM Post #21 |
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Friend of the fish
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^thanks superpredator |
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| Superpredator | Sep 22 2012, 08:30 PM Post #22 |
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Apex Predator
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No problem! |
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| Black Ice | Sep 22 2012, 11:16 PM Post #23 |
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Drom King
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I already proved this. |
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| Black Ice | Sep 22 2012, 11:19 PM Post #24 |
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Drom King
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No when of similiar size, the predator usually wins. Ive explained this too many times. |
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| Palaeogirl | Sep 27 2012, 06:52 AM Post #25 |
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Omnivore
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Maybe if it doesn't have weapons, but if it is armed well enough, I favour the prey. |
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| ArachnidKid | Sep 27 2012, 06:56 AM Post #26 |
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Heterotrophic Organism
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Kentrosaurus is very well armed with the placement of spikes on its body, He got my vote for that reason.IMO he would win around 55%-45% of the time |
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| Black Ice | Sep 27 2012, 06:58 AM Post #27 |
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Drom King
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deleted Edited by Black Ice, Sep 27 2012, 06:58 AM.
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| Black Ice | Sep 27 2012, 06:59 AM Post #28 |
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Drom King
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Whats the thing gonna do when the droms binded to its side disemboweling it? Only the sickle claws were used for puncturing. |
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| FireCrown | Sep 27 2012, 07:40 AM Post #29 |
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Felines,Ursids,and Canid
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Kentrosaurus wins |
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| theropod | Sep 29 2012, 06:34 AM Post #30 |
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palaeontology, open source and survival enthusiast
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how do you imagine it getting past all the spikes? |
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