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Austroraptor cabazai v Utahraptor ostrommaysorum
Topic Started: Feb 6 2012, 07:12 PM (9,135 Views)
Taipan
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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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Austroraptor cabazai
Austroraptor ("Southern thief") was a genus of dromaeosaurid dinosaur that lived about 70 million years ago during the Cretaceous period in what is now modern Argentina. The type species for the genus, Austroraptor cabazai, was described in late 2008 by Fernando Novas of the Museo Argentino de Ciencias Naturales. The fossil specimen was discovered in the Late Cretaceous deposits located in the Río Negro Province of Argentina. The species was named in honor of Alberto Cabaza, who founded the Museo Municipal de Lamarque where the specimen was partially studied. Considered large for a dromaeosaur, Austroraptor cabazai measured around 5 metres (16 ft) in length from head to tail. It is the largest dromaeosaur to be discovered in the Southern Hemisphere. Particularly notable about the taxon were its relatively short forearms, much shorter in proportion compared to those of other members of its family. The relative length of its arms has caused Austroraptor to be compared to another, more famous short-armed dinosaur, Tyrannosaurus. Weight: 365 kg (810 lbs).

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Dracorex128
Feb 6 2012, 04:56 AM
Utahraptor vs Austroraptor
Edited by Taipan, Dec 6 2013, 09:42 PM.
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populator135
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Heterotrophic Organism
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Utahraptror belongs to a family of raptors called Eudromaeosauria, which includes Deinonychus, Velociraptor, Achillobator and other raptors. Austroraptor belongs to a family of raptors called Unenlagiinae. This family of raptors includes animals that are very similar anatomically to Troodon. Troodon was probably a predator of small animals, and used it's elongated claw to pin small prey to the ground. Austroraptror, although not a predator of small game, was not suited for taking on very large quary. It's sickle-shaped claws were smaller than those of an equally sized Utahraptor or Achillobator, and it also had a slender skull with non-serated conical teeth like a Spinosaur. It also had very small arms that would have been useless in a fight. I think the Utahraptror would unquestionably have the upper hand in a fight.
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Superpredator
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Utahraptor for size, and weapons
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Apex
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utahraptor it is larger and has more deadly weapons
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Dracorex128
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Yeah, Utahraptor is smart too.
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Wolf Eagle
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The Utahraptor would win here. It was more intelligent, it weighed more, and it was longer than the Austroraptor. Resulting in a larger and smarter predator.
Edited by Wolf Eagle, Feb 13 2012, 05:19 AM.
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ShadowPredator
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whats this about Utahraptor being smarter? A-raptor lived at a later time, wouldnt this make it more intelligent?
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DinosaurMichael
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Utahraptor wins for reasons said above.
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Temnospondyl
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utahraptor looks quicker
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yigit05
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utahraptor wins size avantage,weight,paws
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Mauro20
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Utahraptor wins for sure.
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Black Ice
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populator135
Feb 7 2012, 02:28 PM
Utahraptror belongs to a family of raptors called Eudromaeosauria, which includes Deinonychus, Velociraptor, Achillobator and other raptors. Austroraptor belongs to a family of raptors called Unenlagiinae. This family of raptors includes animals that are very similar anatomically to Troodon. Troodon was probably a predator of small animals, and used it's elongated claw to pin small prey to the ground. Austroraptror, although not a predator of small game, was not suited for taking on very large quary. It's sickle-shaped claws were smaller than those of an equally sized Utahraptor or Achillobator, and it also had a slender skull with non-serated conical teeth like a Spinosaur. It also had very small arms that would have been useless in a fight. I think the Utahraptror would unquestionably have the upper hand in a fight.
Utahraptor was more closely related to achillobator, not deinonychus and velociraptor.
Edited by Black Ice, Sep 10 2012, 12:37 AM.
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7Alx
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Utahraptor wins IMO
Slightly bigger, more robust and bigger arms.
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SpinoInWonderland
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U t a h r a p t o r
W i n s
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theropod
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no major differences except that utahraptor has a size advantage, more formidable jaws and longer arms, so it´s clear which one wins most of the time
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