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| Spinosaurus aegyptiacus v Tyrannotitan chubutensis | |
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| Tweet Topic Started: Nov 1 2014, 07:47 PM (5,491 Views) | |
| Taipan | Nov 1 2014, 07:47 PM Post #1 |
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Spinosaurus aegyptiacus Spinosaurus is a genus of theropod dinosaur which lived in what is now North Africa, from the lower Albian to lower Cenomanian stages of the Cretaceous period, about 112 to 97 million years ago. Spinosaurus may be the largest of all known carnivorous dinosaurs, even larger than Tyrannosaurus and Giganotosaurus. Estimates published in 2005 and 2007 suggest that it was 12.6 to 18 metres (41 to 59 ft) in length and 7 to 20.9 tonnes (7.7 to 23.0 short tons) in weight. The skull of Spinosaurus was long and narrow like that of a modern crocodilian. Spinosaurus is thought to have eaten fish; evidence suggests that it lived both on land and in water like a modern crocodilian. The distinctive spines of Spinosaurus, which were long extensions of the vertebrae, grew to at least 1.65 meters (5.4 ft) long and were likely to have had skin connecting them, forming a sail-like structure, although some authors have suggested that the spines were covered in fat and formed a hump. Multiple functions have been put forward for this structure, including thermoregulation and display. Dal Sasso et al. (2005) assumed that Spinosaurus and Suchomimus had the same body proportions in relation to their skull lengths, and thereby calculated that Spinosaurus was 16 to 18 meters (52 to 59 ft) in length and 7 to 9 tonnes (7.7 to 9.9 short tons) in weight. The Dal Sasso et al. estimates were criticized because the skull length estimate was uncertain, and (assuming that body mass increases as the cube of body length) scaling Suchomimus which was 11 meters (36 ft) long and 3.8 tonnes (4.2 short tons) in mass to the range of estimated lengths of Spinosaurus would produce an estimated body mass of 11.7 to 16.7 tonnes (12.9 to 18.4 short tons). ![]() Tyrannotitan chubutensis Tyrannotitan is a genus of huge bipedal carnivorous dinosaur of the carcharodontosaurid family from the Aptian stage of the early Cretaceous period, discovered in Argentina. It is closely related to other giant predators like Giganotosaurus and Carcharodontosaurus. Its fearsome appearance is reflected in the meaning of its name, "Tyrant titan". Tyrannotitan chubutensis was described by Fernando E. Novas, Silvina de Valais, Pat Vickers-Rich, and Tom Rich in 2005. The fossils were found at La Juanita Farm, 28 kilometres (17 mi) northeast of Paso de Indios, Chubut Province, Argentina. They are believed to have been from the Cerro Castaño Member, Cerro Barcino Formation (Aptian stage) around 112.2 - 121 million years ago. The length of the animal is estimated to be on average at 12.2 metres (40 ft). Little information has yet been released about Tyrannotitan. Only a very brief description of the fossils has been published (four pages). The teeth are less blade-like than those of its kin, and possess odd, lumpy denticles (there is a barely distinguishable groove in the center, dividing each denticle into two parts). ![]()
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| Ceratodromeus | Nov 7 2014, 01:52 AM Post #31 |
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Aspiring herpetologist
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it's pretty obvious from my post i wasn't talking about pterosaurs. In fact, my whole post was apparently clear to you seeing how you answered my question in your usual rambling manner. -- suchomimus is no longer the best basis for scaling because of leg:body proportions. theropod covered “tetradactyl” pretty well on the last page, so there's no need to reiterate. cheers Edited by Ceratodromeus, Nov 7 2014, 02:07 AM.
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| The Reptile | Nov 26 2014, 10:15 AM Post #32 |
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Herbivore
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Ok well I apologize for my obvious misunderstanding, so there is no reason for this to get heated.
Edited by The Reptile, Nov 26 2014, 10:37 AM.
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| Ceratodromeus | Nov 27 2014, 10:07 AM Post #33 |
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Aspiring herpetologist
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heated? not at all. i'd appreciate it if you read my posts more carefully before jumping to conclusions |
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| The Reptile | Nov 28 2014, 11:12 AM Post #34 |
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Herbivore
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See? Right there. You just added more unnecessary intensity/heaviness to this innocent conversation by explicitly demanding that I reduce my laziness |
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| Ceratodromeus | Nov 28 2014, 11:29 AM Post #35 |
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Aspiring herpetologist
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please direct me to the point where i “demand you reduce your laziness” this post has me like ![]() i see no where that i'm heated( unless you have deduced the “.” at the ends if my statements as being heated for some weird reason) i suggest you unrustle your jimmies there, kind sir. i'm not agitated, heated, or whathaveyou. in fact, i'm calmly eating pumpkin pie
Edited by Ceratodromeus, Nov 28 2014, 11:32 AM.
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| Teratophoneus | Feb 7 2015, 10:44 AM Post #36 |
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Herbivore
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I'm pretty sure Cau wasn't talking about size. He mentioned how Carcharodontosaurus' femur was more gracile than Tyrannotitan's. |
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| theropod | Feb 8 2015, 07:43 PM Post #37 |
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palaeontology, open source and survival enthusiast
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But firstly, the Carcharodontosaurus femur is distorted, and secondly, the Tyrannotitan femur was 12% longer, so it could be allometrical variation. |
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| Soopairik | Oct 17 2017, 08:24 AM Post #38 |
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Carnoferox's sex toy
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Tyrannotitan wins because Spino isn't suited for land combat. Sorry, Spino fans. |
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