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| Carnotaurus sastrei v Rugops primus | |
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| Tweet Topic Started: Dec 3 2013, 07:22 PM (5,068 Views) | |
| Taipan | Dec 3 2013, 07:22 PM Post #1 |
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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. 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. ![]() ________________________________________________________________
Edited by Taipan, Dec 31 2016, 09:51 PM.
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| spinosaurus rex | Feb 7 2014, 01:19 AM Post #16 |
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Carnivore
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So, it seems that rugops could have been bigger. Is there eny estimate on how big it can get full grown? Or is rather conservative? |
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| Daspletosaurus | Feb 7 2014, 05:25 AM Post #17 |
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Heterotrophic Organism
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At ths point any adult size estimates for Rugops will be pure speculations! Without a base adult referance as a guide even tue most educated guess is still a guess. As for this fight Carnotaurus would win seeing as s it is suggested to have used its brow horns for head butting and fighting. |
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| moldovan0731 | Apr 2 2018, 02:38 AM Post #18 |
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Heterotrophic Organism
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Mismatch in favor of Carnotaurus, Rugops was much smaller:
Edited by moldovan0731, Apr 3 2018, 09:18 PM.
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| Drift | May 10 2018, 07:14 AM Post #19 |
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High Spined Lizard
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Weaker bites such as a great white shark often have slicing serrations to aid in hunting (obviously) but it's not a noticeable factor here seeing as how the stress would wreck the animals skull. |
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