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| Gorgosaurus libratus v Rajasaurus narmadensis | |
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| Tweet Topic Started: Mar 8 2012, 08:26 PM (8,798 Views) | |
| Taipan | Mar 8 2012, 08:26 PM Post #1 |
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Gorgosaurus libratus Gorgosaurus is a genus of tyrannosaurid theropod dinosaur that lived in western North America during the Late Cretaceous Period, between about 76.5 and 75 million years ago. Fossil remains have been found in the Canadian province of Alberta and possibly the U.S. state of Montana. Paleontologists recognize only the type species, G. libratus, although other species have been erroneously referred to the genus. Like most known tyrannosaurids, Gorgosaurus was a bipedal predator weighing more than a metric ton as an adult; dozens of large, sharp teeth lined its jaws, while its two-fingered forelimbs were comparatively small. Gorgosaurus was most closely related to Albertosaurus, and more distantly related to the larger Tyrannosaurus. Gorgosaurus was smaller than Tyrannosaurus or Tarbosaurus, closer in size to Albertosaurus and Daspletosaurus. Adults reached 8 or 9 meters (26 to 30 ft) from snout to tail. Paleontologists have estimated full-grown adults to weigh more than 2.4 tonnes (2.7 short tons). The largest known skull measures 99 centimeters (39 in) long, just slightly smaller than that of Daspletosaurus. ![]() Rajasaurus narmadensis Rajasaurus was an abelisaurid, a member of a group of theropod predators known to have lived only on landmasses that were part of the supercontinent Gondwana, such as Africa, India, Madagascar, and South America. Rajasaurus closely resembles Majungasaurus, a contemporary abelisaur from Madagascar, an island that had separated from the Indian landmass about 20 million years earlier.[4] It was found to be an abelisaurid through a phylogenetic analysis of anatomical characteristics, and was described as a carnotaurine abelisaurid (the subfamily including Carnotaurus) because of the configuration of its nasal bones and its possession of a growth ("excrescence") on its frontal bone. Rajasaurus is distinguished from other genera by its single nasal-frontal horn, the elongated proportions of its supratemporal fenestrae (holes in the upper rear of the skull), and the form of the ilia (principle bones of the hip) which feature a transverse ridge separating the brevis shelf from the hip joint. Rajasaurus was identified from a partial skeleton including a well–preserved skull (with a complete braincase and 70% of the rest of the skull bones recovered), hip bones and parts of the hind legs, backbone and tail. This specimen, GSI 21141/1–33, serves as the type specimen of the genus and species. Rajasaurus measured about 7.6–9 m (24.9–29.5 ft) long, 2.4 m (7.9 ft) in height, and weighed about 3 to 4 tons. The skull was short, measuring 60 cm (23.6 in) in length, and bore a distinctive low rounded horn. This horn is made up of outgrowths from the nasal and frontal bones. ![]() ___________________________________________________________________
Edited by Taipan, Nov 13 2016, 01:34 PM.
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| Fishfreak | Nov 13 2012, 02:28 PM Post #16 |
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Friend of the fish
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^and after reading that gorgosaurus wins. |
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| Temnospondyl | Nov 24 2012, 03:56 AM Post #17 |
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Stegocephalia specialist.
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After reading that, rajasaurus strikes 3 times, while Gorgosaurus simply opens the mouth. It's too dumb slow for Rajasaurus. |
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| Jinfengopteryx | Nov 24 2012, 04:57 AM Post #18 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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This is not going to be hit and run and as a Hadrosaur hunter, Gorgosaurus can't have been that slow and dumb (Hadrosaurs are believed o be quite fast) Look: GUT CONTENTS FROM A CRETACEOUS TYRANNOSAURID: IMPLICATIONS FOR THEROPOD DINOSAUR DIGESTIVE TRACTS By DAVID J. VARRICCHIO Maybe that was a scavenged one, but Gorgosaurus is believed to prefer Hadrosaurs as prey item: Tyrannosaurs from the Late Cretaceous of western Canada. By Dale A. Russell |
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| Carcharadon | Nov 24 2012, 05:18 AM Post #19 |
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Shark Toothed Reptile
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^yea i saw his far earlier comments, he sounded like a ceratosaurus fanboy and underrated allosaurus
Edited by Carcharadon, Nov 24 2012, 05:19 AM.
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| Temnospondyl | Nov 24 2012, 04:40 PM Post #20 |
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Stegocephalia specialist.
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You realize I'm joking right? Rajasaurus still has a little advantage. Size for example. |
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| Jinfengopteryx | Nov 24 2012, 06:58 PM Post #21 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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I don't trust such sources, because their weights aren't based on real method, they just suggest it and take something what they think is realistic for it. Even wiki is a better source. |
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| Temnospondyl | Nov 24 2012, 07:41 PM Post #22 |
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Stegocephalia specialist.
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Yea, I did that after watching JFC once |
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| 7Alx | Nov 24 2012, 09:08 PM Post #23 |
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Herbivore
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Almost every paleontologists agree that Allosaurus would win against Ceratosaurus is most fights. Only Allosaurus haters and Ceratosaurus fanboys disagree. At least Ceratosaurus would have very good chance against Marshosaurus and Stokesosaurus. |
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| Jinfengopteryx | Nov 24 2012, 09:38 PM Post #24 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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Most serious Paleontologists don't debate about such things. |
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| Verdugo | Nov 24 2012, 11:38 PM Post #25 |
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Large Carnivores Enthusiast
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As far as the evidence go, Tyrannosaurids don't strike very slow like people believe
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| Jinfengopteryx | Nov 24 2012, 11:47 PM Post #26 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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Is that your source? http://www.bio.ucalgary.ca/contact/faculty/pdf/russell/305.pdf |
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| Verdugo | Nov 25 2012, 12:08 AM Post #27 |
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Large Carnivores Enthusiast
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Yes it is It is a very nice and comprehensive paper on T rex neck muscles |
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| Carcharadon | Sep 15 2013, 12:06 PM Post #28 |
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Shark Toothed Reptile
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Well actually im going to give this to gorgosaurus now. |
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| thesporerex | Sep 15 2013, 06:46 PM Post #29 |
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Kleptoparasite
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I think anyone who knows about dinosaurs would agree that allosaurus would win against ceratosaurus. But I would favour ceratosaurus over allosaurus at parity anyday. |
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| retic | Sep 16 2013, 02:20 AM Post #30 |
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snake and dinosaur enthusiast
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rajasaurus is more robust and powerful when compared to a relatively gracile tyrannosaur such as gorgosaurus. the abelisaur wins 60% of the time. |
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