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Post by Theropod on Jun 29, 2014 13:57:57 GMT
I didn't say that T-Rex would fall at a speed of 29,8 km/h. I said that it would fall at a speed of 40 km/h You actually didn't say either of those, but this doesn't actually invalidate my case anyway. I believe that T-Rex was mostly feeding on slow creatures (like ceratopsians) This mostly depends on what it would feed on. A predator will usually feed on anything it can, and with many taxa recognized from the same region and period as Tyrannosaurus rex, it surely wouldn't feed mostly on ceratopsians, which only comprised a very small part of its biodiversity, even more when there were easier prey items at display, which would waste less energy to kill, this behaviour is observed in extant predators as well. Of course, it can be argued that larger creatures like Triceratops horridus were slower due to carrying more mass (with the smallest estimates being around the same as male Loxodonta africana), but they would also be a lot more dangerous. About the speed of Tyrannosaurus rex, I found another source: From " Analysis of hindlimb muscle moment arms in Tyrannosaurus rex using a three-dimensional musculoskeletal computer model: implications for stance, gait, and speed" (hyperlink).
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Post by ornitholestes on Jul 5, 2014 12:30:31 GMT
Ceratopsians were not slow animals at all.
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Post by Theropod on Jul 5, 2014 15:25:12 GMT
Definitely not, they had strong enough limbs for locomotion and I wouldn't be surprised if most ceratopsian taxa were faster than the average human.
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Post by ornitholestes on Jul 5, 2014 18:02:25 GMT
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Post by Theropod on Jul 5, 2014 18:43:55 GMT
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Post by ornitholestes on Jul 6, 2014 20:33:16 GMT
Thanks! I actually didn’t find it myself though, I think it was someone on cf who posted the link. Anyway, I think the analogy of ceratopsians being giant rhinos isn’t actually bad, because they could have behaved in a fairly similar manner. What they are definitely not is some sort of elephant analogue.
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Post by Theropod on Jul 7, 2014 2:21:03 GMT
ornitholestesI agree, although figures like 12 tons for Triceratops horridus would probably make it not that fast in comparison to other ceratopsians, but still potentially fast.
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Post by ornitholestes on Jul 7, 2014 12:37:16 GMT
Faster than similar-sized elephants (way more graviportal animals), and, when size-corrected, likely comparable to rhinos or hippos.
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Post by Theropod on Jul 7, 2014 12:55:43 GMT
Yes, in fact the point Mercurysaurus was bringing up actually included one concept that should suit this thread.
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Post by ornitholestes on Jul 7, 2014 22:15:52 GMT
I’ve got another one: Dilophosaurs, abelisauroids and/or spinosaurs could swallow large prey whole in snakelike manner.
These have actually been hypothesized by scientists!
Of course there are many things wrong with that, starting with their vastly different tooth design (either straight and conical or curved and ziphodont, none hook-like) and the fact that no theropods except perhaps a few maniraptorans had kinetic quadrates (a prominent feature increasing gape and mandibular flexibility in snakes) or other notable adaptions for this kind of behaviour (such as palatopterygoid teeth), except an intramandibular joint (which is nothing special and shared with most squamates, whether they swallow prey whole or not).
Funny enough the most extreme adaptions for gape within theropoda are not found in any of those taxa above, but in allosaurids.
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Post by Angilasuruda on Jul 9, 2014 12:51:37 GMT
SpinoBro14Please do not report posts unless they are a serious violation of the rules, thank you. Looking back at this here I am going to say..... LOLOLOLOL PWNED BY AN ADMINnow excuse me while I go shoot myself now
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Post by jurassicjohn on Aug 1, 2014 22:34:02 GMT
The old theories of what people thought dinosaurs looked like 100 or so years ago. They had them out to be these fat lizards that dragged theyre stomachs across the ground. They were so boring looking. I dont know about you but jurassic park would be far less awesome if these versions of dinos were running around.
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Post by Theropod on Aug 2, 2014 0:08:11 GMT
The old concept looks so classical, although I gotta admit that dinosaurs were so brutally inaccurately depicted back then I get headaches by merely thinking that people actually believed in that.
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Post by ornitholestes on Aug 2, 2014 21:26:36 GMT
Those old depictions definitely qualify as among the worst theories. But actually a good old 19th-century megalosaurus would have been something I’d love to see in a movie, although not necessarily as a dinosaur.
I wonder what present-day theories on dinosaurs are going to be regarded as in a few hundreds of years, given there are still humans then…
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Post by Theropod on Aug 2, 2014 21:42:00 GMT
ornitholestesThat actually reminds me of someone I saw on Deviantart, who made humorous, inaccurate depictions of extant animals as a way of making fun of how we could be depicting extinct taxa completely wrong.
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