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| Extinct Animal Questions | |
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| Topic Started: Nov 26 2013, 10:24 PM (193,278 Views) | |
| Mathius Tyra | Jul 16 2016, 01:33 AM Post #3241 |
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Rat snake is love... Rat snake is life
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Australovenator, Megaraptorans are known to be fast-running predator, pursuing prey by chasing it down and dispatch with large claws on their hands. Carcharodontosaurs and Allosaurs, iirc are not known to be fast runner and I don't know about Afrovenator. |
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| BossMan, Jake | Jul 16 2016, 01:44 AM Post #3242 |
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Son of God
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I thought Concavenator was thought/calculated to have been one of the fastest theropods around? |
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| Incinerox | Jul 16 2016, 06:12 AM Post #3243 |
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Āeksiot Zaldrīzoti
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In what universe, exactly? |
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| BossMan, Jake | Jul 16 2016, 09:57 AM Post #3244 |
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Son of God
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http://www.seeker.com/top-10-fastest-dinosaurs-1770784673.html This one... |
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Jul 16 2016, 10:17 AM Post #3245 |
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That list also has Tyrannosaurus and Nanotyrannus on it, above Carnotaurus, let's not forget, and not a single Ornithomimid. |
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| TheNotFakeDK | Jul 16 2016, 11:56 AM Post #3246 |
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200% Authentic
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To be fair on the last point, the study deliberately excluded "presumed herbivorous or largely herbivorous" theropods for a number of reasons relating to their aim. Naturally, that list decided to drop or completely ignored that part and just went with "Top 10 Fastest Dinosaurs". 10/10 journalism. Speaking of that list, I'm struggling to figure out just how they ended up with the list they did. The study was done to determine "cursorial limb proportions", that is to say how cursorially adapted the limbs of each species were, NOT to determine the actual speed of the animals. In fact, to quote the paper (bolded for emphasis):
Furthermore, the list presented doesn't even match up with the theropods with the highest CLP scores: a number of taxa included in the CLP score chart are missing, Guanlong is out of order, and Carnotaurus wasn't even included in the dataset! How they got that "Top 10" list is beyond me. Regardless of all that, Concavenator was recorded as having a positive CPL score, though only just, so its limbs were at the very least suited for cursoriality. |
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| Incinerox | Jul 16 2016, 12:42 PM Post #3247 |
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Āeksiot Zaldrīzoti
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4728391/ It's this paper, for anyone interested. |
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| CyborgIguana | Jul 16 2016, 10:36 PM Post #3248 |
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Doesn't Allosaurus at least have a fairly cursorial build IIRC? It may not have been all that fast, but certainly it could run. |
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| Incinerox | Jul 17 2016, 11:48 AM Post #3249 |
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Āeksiot Zaldrīzoti
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According to one paper that compared feeding behaviour and mechanics between Allosaurus and Ceratosaurus (with T. rex as a comparison point), Allosaurus was found to have greater cursoriality AND top speed than Ceratosaurus. While Ceratosaurus was found to have quicker acceleration. I forgot what it said about T. rex. It was odd considering that most of the paper talked jaw and neck mechanics. |
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| Furka | Jul 17 2016, 01:54 PM Post #3250 |
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Would it be possible for you to send a link to the paper ? Always good to get more infos about those two theropods and how they could have coexisted. |
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| Acinonyx Jubatus | Jul 17 2016, 04:11 PM Post #3251 |
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I AM THE UNSHRINKWRAPPER!
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Any data on the facial innervation of non-mammalian Synapsids? |
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| CyborgIguana | Jul 17 2016, 05:06 PM Post #3252 |
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Of course, when is it ever not?
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| Incinerox | Jul 17 2016, 07:55 PM Post #3253 |
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Āeksiot Zaldrīzoti
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T. rex is a scientifically acknowledged unit of measurement after all: http://onlinelibrary.wiley.com/doi/10.1002/ar.20563/full |
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| Acinonyx Jubatus | Jul 17 2016, 10:44 PM Post #3254 |
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I AM THE UNSHRINKWRAPPER!
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So I happened to be reading about the history of ancient Tyre, and came across a mention in an old manuscript that said that Tyre imported ivory from Cyprus. This account would have dated to about 500 BC. The only sources of ivory in Cyprus would have been pygmy elephants (Palaeoloxodon cypriotes) and hippos (Hippopotamus minor.) Both of these animals are thought to have gone extinct about 8,500 years before the time period this account described. Is it possible that pygmy elephants survived much longer than we thought? |
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| heliosphoros | Jul 17 2016, 10:58 PM Post #3255 |
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It is a possibility, but it is equally as likely that the ivory was imported from somewhere else before coming to Cyprus.
Edited by heliosphoros, Jul 17 2016, 10:58 PM.
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