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| Extinct Animal Questions | |
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| Topic Started: Nov 26 2013, 10:24 PM (193,230 Views) | |
| 54godamora | Jan 14 2018, 05:05 PM Post #3961 |
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ok then. other question: what are some of the largest non- dinosaurian predators of the Triassic that have their limbs under their body? Edited by 54godamora, Jan 14 2018, 05:13 PM.
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| magpiealamode | Jan 14 2018, 10:46 PM Post #3962 |
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No good hero is a one-trick phony.
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What immediately comes to mind is the rauisuchians, which, though they're not currently considered an actual clade, does represent a group of Triassic predators with erect stances. They are pseudosuchians, so, related to dinosaurs, but much more closely related to crocodiles. Their hips evolved a stance known as "pillar erect", where the socket faced downwards, nestled under a shelf of bone, like so: Most would have looked something like this in life, although this reconstruction might be outdated: Edited by magpiealamode, Jan 14 2018, 10:48 PM.
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| 54godamora | Jan 14 2018, 11:41 PM Post #3963 |
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question: isn't saurosuchus an rauisuchid? also: what are the largest known dicynodonts? |
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| TheNotFakeDK | Jan 15 2018, 11:50 AM Post #3964 |
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200% Authentic
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Not with the way Rauisuchidae is currently defined, no. Rauisuchidae is defined as to exclude the crocodylomorphs. However, because crocodylomorphs are actually nested well within typical "rauisuchians", Rauisuchidae is limited exclusively to the group that split from the crocodylomorphs. That means that Saurosuchus and several other typical "rauisuchians" that are outside of the rauisuchid-crocodylomorph split cannot be included in Rauisuchidae. There are some out there that are suggested to be pretty flippin' big, like Elephantosaurus, but they're pretty fragmentary and their size is difficult to gauge. The largest dicynodonts we can reliably judge the size of would be the big Triassic stahlekeriids like Placerias, Ischigualastia, Jachaleria and so on. A purported 5-6 metre monster of a dicynodont is reported from the same locality as Smok, but it hasn't been formally described yet so we can't make a firm call on its size yet. |
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| Galliwasp | Jan 21 2018, 11:09 AM Post #3965 |
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There is a way out. Just not for you.
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So what's all this about Tyrannosaurus apparently having orange brows, a cowl of bristly feathers on the nape of its neck, and dark patches on its skin? Curiously, I've only seen this reported in trashy tabloids. Anyone seen the documentary they refer to? (It's not in the U.S.) If true, it's a far sigh of relief from the myriad of disappointing ways I've dreaded it looking (mainly gray, fleshy, elephantine, mostly featherless, red-faced, etc). |
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| stargatedalek | Jan 21 2018, 12:58 PM Post #3966 |
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I'm not slow! That's just my moe!
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That entire documentary is nonsense. Don't trust a word of it. |
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| Acinonyx Jubatus | Jan 21 2018, 01:17 PM Post #3967 |
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I AM THE UNSHRINKWRAPPER!
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That's a bit of an oversimplification. The Real T. rex was, overall, a pretty good dinosaur documentary- WAY better than things like Clash of the Dinosaurs. It's main problem is that it takes possibilities and presents them as fact. The science they used to reconstruct its sounds, possible feather coverage, and colour patterns was sound, but the results they came up with are just a few of the many, many possibilities. Saying the whole thing's nonsense is a bit like throwing the baby out with the bathwater. Regardless of its problems, it presents at least a halfway accurate T. rex, and I think if there was more media like it it'd go a long way towards destroying the JP-style image that most people associate with Tyrannosaurus. |
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| stargatedalek | Jan 21 2018, 04:14 PM Post #3968 |
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I'm not slow! That's just my moe!
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I would hardly say that, the reconstruction is shrink-wrapped and the feathers are presented extremely unrealistically, like giant 20 foot long stalks of down. |
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| Incinerox | Jan 22 2018, 01:09 PM Post #3969 |
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Āeksiot Zaldrīzoti
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![]() I must ask, what documentary are you watching? It's hardly perfect, but it's hardly shrinkwrapped either. As for the integument: ![]() Could be better, but it's not exactly bad either when you compare it to particularly hairy elephants. A lot of the speculation in the documentary weren't as concrete as this discussion made it out to be either. They were actually presented as speculation on what T. rex could have been like. Wasn't perfect, but it's a bit harsh calling the whole thing nonsense, to be honest. |
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| stargatedalek | Jan 22 2018, 04:33 PM Post #3970 |
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I'm not slow! That's just my moe!
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I can see the outline of the skull, that's shrink-wrapped, not sure how you can argue otherwise. That's a baby elephant, it's hair is a lot shorter than you make it seem. The feathers on that Tyrannosaurus are at least a meter long, they shouldn't be able to stand up like that. |
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| magpiealamode | Jan 22 2018, 07:27 PM Post #3971 |
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No good hero is a one-trick phony.
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![]() For the sake of argument here is Jeff Goldblum, who is in my opinion a strange-looking man, but one with a normal human face. In the image you can see the outline of his skull in several places. I wouldn't say his face has been shrinkwrapped, and I don't think the T. rex is much more revealing. Bones show through, it's what we vertebrates get for having large, rigid objects inside our bodies. Not gonna lie, that's a pretty ugly reconstruction. I wouldn't call it nonsense, though. Edited by magpiealamode, Jan 23 2018, 08:50 AM.
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| Acinonyx Jubatus | Jan 22 2018, 07:58 PM Post #3972 |
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I AM THE UNSHRINKWRAPPER!
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Exactly. And here's a blog post by Mark Witton to drive the point home: https://markwitton-com.blogspot.ca/2017/08/the-convention-of-shrink-wrapping.html |
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| BossAggron | Jan 22 2018, 10:08 PM Post #3973 |
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Formerly Dilophoraptor
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it doesn't seem shrink wrapped on the skull at all, I can't even see the antorbital fenestra at all, which can generally be used as a benchmark for the tightness of the skin. the only one that could be made a case is the orbit, but even then, it looks like it's surrounded by a raise of keratin rather than the skin in that area being sunken in. |
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| stargatedalek | Jan 22 2018, 11:07 PM Post #3974 |
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I'm not slow! That's just my moe!
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I meant the back edge of the skull, which should not be visible as that is where it anchors to the neck. The "crests" following the shape of the underlying skull is, to be frank, an enraging trope, but technically plausible. Human (and frankly, most mammal) skulls are not a good reference of comparison for theropods. Our chins, cheeks, and eyes are so prominent they make up more or less most of our appearance, but that isn't true of a theropod. Our skulls specifically are also quite oblong, what we think of as the top or back of the skull is really the middle of it. |
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| BossMan, Jake | Jan 23 2018, 12:02 AM Post #3975 |
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Son of God
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I honestly hate how they depicted the Trex, while it is a step in the right direction I'm getting more Godzilla/Kaiju vibes from it...Again a step in the right direction however there is still more work that needs to be the done. Some things I've noticed is that the lower ja is way to short, the arms are to small and the brows seem to exaggerated and the legs are to narrow and might even say to bird like Edited by BossMan, Jake, Jan 23 2018, 12:04 AM.
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