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Utahraptor ostrommaysorum v Kentrosaurus aethiopicus
Topic Started: Sep 21 2012, 08:46 PM (4,829 Views)
DinosaurMichael
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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.

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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.

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dinofreak337
Sep 20 2012, 08:26 PM
utahraptor vs. kentrosaurus
Edited by Taipan, Dec 4 2017, 08:34 PM.
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Jinfengopteryx
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Sep 22 2012, 07:04 PM
theropod
Sep 22 2012, 07:01 PM
and the stegosaur would stand still and let it do that without defending itself? and dromaeosaurs jaws aren´t built for biting the skull, that´s the most unlikely killing metod for a dromaeosaur that usually pierced the throat with it´s claws or attacked the flanks.
The Raptor is much faster than the Stegosaur, it could use its claws as you said to rip the neck .
Quadrupeds are good spot turners, so it can turn and hit the Utahraptor with the spikes.
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Megafelis Fatalis
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Jinfengopteryx
Sep 22 2012, 07:05 PM
Prehistoric Cat
Sep 22 2012, 07:04 PM
theropod
Sep 22 2012, 07:01 PM
and the stegosaur would stand still and let it do that without defending itself? and dromaeosaurs jaws aren´t built for biting the skull, that´s the most unlikely killing metod for a dromaeosaur that usually pierced the throat with it´s claws or attacked the flanks.
The Raptor is much faster than the Stegosaur, it could use its claws as you said to rip the neck .
Quadrupeds are good spot turners, so it can turn and hit the Utahraptor with the spikes.
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
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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
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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
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Just for easy viewing:
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Credit to Dinofreak337.
Edited by Superpredator, Sep 22 2012, 08:19 PM.
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Fishfreak
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^thanks superpredator
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Superpredator
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No problem!
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Black Ice
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brolyeuphyfusion
Sep 22 2012, 06:47 PM
Black Ice
Sep 22 2012, 01:46 AM
Droms latched on and climbed on their prey.
Its obvious the raptor wins.
Latch on spiky prey? Any dromaeosaur that tries to latch on spiky prey is very mad
I already proved this.
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Black Ice
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theropod
Sep 22 2012, 07:19 PM
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.
No when of similiar size, the predator usually wins. Ive explained this too many times.
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Palaeogirl
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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
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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
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ArachnidKid
Sep 27 2012, 06:56 AM
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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Edited by Black Ice, Sep 27 2012, 06:58 AM.
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Black Ice
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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
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Kentrosaurus wins
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theropod
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Black Ice
Sep 27 2012, 06:59 AM
Whats the thing gonna do when the droms binded to its side disemboweling it?
Only the sickle claws were used for puncturing.
how do you imagine it getting past all the spikes?
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