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Who wins?
Carnotaurus sastrei 2 (100%)
Rugops primus 0 (0%)
Total Votes: 2
Carnotaurus sastrei v Rugops primus
Topic Started: Dec 3 2013, 07:22 PM (5,152 Views)
Taipan
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Carnotaurus sastrei
Carnotaurus was a large predatory dinosaur. Only one species, Carnotaurus sastrei has been described so far. Carnotaurus lived in Patagonia, Argentina (La Colonia Formation) during the Campanian or Maastrichtian stage of the Late Cretaceous. Carnotaurus was a large theropod, about 8 metres (26 ft) in length, weighing between 1488 kg and 2626 kg (1.6–2.9 short tons), depending on the method of estimation. The most distinctive features of Carnotaurus are the two thick horns above the eyes, and the extremely reduced forelimbs with four basic digits, though only the middle two of these ended in finger bones, while the fourth was splint-like and may have represented an external 'spur.' The fingers themselves were fused and immobile, and lacked claws. It is also characterized by its unusually long neck (compared to other abelisaurs), and its small head with box-shaped jaws. The eyes of Carnotaurus faced forward, which is unusual in a dinosaur, and may indicate binocular vision and depth perception. There is a rather puzzling contrast between Carnotaurus’ deep, robust-looking skull and its shallow, slender lower jaw. So far no one has worked out what this might imply about its methods of feeding.

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Rugops primus
Rugops (meaning "wrinkle face") is a genus of theropod dinosaur which inhabited what is now Africa approximately 95 million years ago (Cenomanian stage of the Late Cretaceous). The discovery of a Rugops skull in Niger in 2000 was a crucial breakthrough in the understanding of the evolution of theropods in that area, and demonstrates that this landmass was still united with Gondwana at that stage in history. Though known only from a skull, Rugops has been estimated to have been about 6 metres (20 ft) long based on comparisons with its relatives. The skull bore armour or scales, and other bones had many blood vessels, causing Dr. Paul Sereno, who led the team that discovered the fossil, to say, "It's not the kind of head designed for fighting or bone-crushing", suggesting that it may have been a scavenger. The skull also bears two rows of seven holes each, of unknown purpose, although Sereno has speculated that they may have anchored some kind of crest or horns. Like other abelisaurs, Rugops probably had very short arms. These were probably useless in fighting. They may have only been balance tools, items to counterbalance the dinosaur's head. The type species is R. primus (meaning "first wrinkle-face"). Rugops is believed to be an abelisaurid, and is related to Majungasaurus. Rugops primus's weight has been estimated at 1,336 kg (2,945 lbs) based on a skull length extrapolation from Carnotaurus sp.

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spinosaurus rex
Dec 3 2013, 02:26 PM
carnotaurus vs rugops
Edited by Taipan, Dec 31 2016, 09:51 PM.
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Spinodontosaurus
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Figure 3 in Sereno et al.,2004 (open access! hooray!) shows the skull of Rugops - although somewhat irritatingly there is no scale bar pertaining to the full reconstruction. Luckily you can extrapolate based on the one provided for the maxilla (seriously, they are part of the same figure, would it honestly have been that difficult to give a figure for the full skull reconstruction??), and by my reckoning after cross-scaling the two together I get a skull length of ~44 cm from the premaxilla - parietal, and an estimated ~45cm maximum length up to the squamosal (this region is not preserved, so it is just an estimate).

How does this compare to other abelisaurids?
Well, Scott Hartman's Carnotaurus has a Pmx-Squamosal skull length of around 58 cm with a tip-to-tip body length of around 7.9 meters, his Majungasaurus is longer by virtue of it being more elongate. Skorpiovenator possesses a similar sized skull to the other two but was in the region of 6 - 6.5 meters long.

An abelisaurid with a 45cm skull is simply not big enough to contend with Carnotaurus.


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Sci Fyena
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Paul Sereno said of the Rugops skull: "It's not the kind of head designed for fighting or bone-crushing."

It was most likely a scavenger, and thus not a match for Carnotaurus.
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Carcharadon
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Carnotaurus wins due to size advantage, also not to mention rugops had a weak bite aswell.
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spinosaurus rex
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perhaps i should of said mujugasaurus? i had no idea rugops was that small.
Edited by spinosaurus rex, Dec 4 2013, 08:09 AM.
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thesporerex
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So how big was rugops actually? I have heard estimates from 6-8 metres long. But if Spinodontosaurus is correct Carnotaurus wins.
Edited by thesporerex, Dec 5 2013, 11:35 PM.
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spinosaurus rex
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same here. that's why i originally suggested it.
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Makaveli7
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Carnotaurus, even if Rugops was 8 meters. It was a speed demon of a dinosaur, and met (if not exceeded) Rugops in every other category.
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blaze
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@Spinodontosaurus
The text in Sereno et al. (2004) says the skull is 31.5cm long.
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retic
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carnotaurus would probably win this based on the size difference between its skull and rugops skull. this would make it likely that carnotaurus is the larger animal.
Edited by retic, Feb 2 2014, 07:09 AM.
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TheMechaBaryonyx789
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Neither had very efficient weaponry, but since Carnotaurus is larger, it should win in this fight.
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BITEFORCE MASTER
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But rugops would be faster than carnotarus. Never doubt his size
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Daspletosaurus
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The Rugops Skull is 31.5 cm long? that seems a little small!
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DarkGricer
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BITEFORCE MASTER
Feb 4 2014, 06:02 AM
But rugops would be faster than carnotarus. Never doubt his size
First of all, Carnotaurus was a speedster, one of the fastest Dinosaurs. I don't think Rugops could match, let alone exceed it, despite it's smaller size.

Second of all, that doesn't even matter. Speed doesn't matter in fights. Agility does. In which, I'm pretty sure Carnotaurus would still be more agile with it's huge, powerful legs.
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blaze
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@Daspletosaurus
That's what the paper says, it clearly tells us that the 6m "estimate" that has been attributed to it had no basis on the actual fossils, mmm it should also be noted that the only Rugops we have is a juvenile IIRC.
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