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| Sooo, dinosaurs have officially turned into birds | |
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| Tweet Topic Started: Nov 3 2012, 08:13 AM (10,711 Views) | |
| Godzillasaurus | Nov 3 2012, 08:13 AM Post #1 |
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Reptile King
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Not in the evolutionary sense, but in the sarcastic sense. Dinosaurs used to be large, scaly, beasts. Now, everyone thinks they all (yes, including sauropods) had feathers. If there have been countless dinosaur skin-impressions, and only a couple feathered non-ceoulosaur theropods, I guess that just puts feathers on every dinosaur, even when the evidence states otherwise. Anyone else bothered by this?
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| theropod | Nov 4 2012, 07:38 AM Post #16 |
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palaeontology, open source and survival enthusiast
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It doesn´t have to, but it is likely, at least mroe likely than such similar structures devoloping for several times in one group, and quills can lead to feathers or vice versa, for example you can see it in ratite birds. Most likely the quill-like structures are nothing but a precursor of more derived structures, or a case of reversed evolution like in a cassowary. Also, the protofeathers of some theropods are said to be just the same as the quills in Tianyulong (beipiaosaurus for example). This just shows how related the two forms are.
But unfortunately for you heterodontosauridae is not part of ornithopoda, and mostly acknowledged to be a very basal clade of Ornithischia. OR they could have simply derived from the same ancestor, developing slightly different shapes (remaining quills in the one branch and evolving into pennaceous feathers in the other) |
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| theropod | Nov 4 2012, 08:01 AM Post #17 |
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palaeontology, open source and survival enthusiast
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![]() think about it this way: which is more likely, that all these groups did develop their filaments independently, or that their common ancestor had some sort of filamentous integument that developed slightly different shapes or stayed in an ancestral condition in some, attained a derived one in others or was secondarily lost or reduced? Consider we have little evidence AGAINST a body covering in those in between, but a lot of evidence for it in many taxa. By mere likelyhood it is clear which is the most probably, isn´t it? Edited by theropod, Nov 4 2012, 08:02 AM.
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| Fist of the North Shrimp | Nov 4 2012, 11:57 AM Post #18 |
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vá á orminum
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There is a theropod handprint(or a foot, I am not an expert ichnologist) with bristle like integument from the Triassic of Germany... (Oh, and I knew about it for quite some time, but I wanted to see how desperate some people are) |
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| Black Ice | Nov 4 2012, 12:02 PM Post #19 |
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Drom King
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What i find confusing is that all of a sudden it went from theropods not having feathers, to only certain groups having it, to all having it, now back to sauropods having it..... Wtf? Everyone knows herbivourus dinosaurs had more lizard like traits then theropods. Example, theropods were bird hipped, and bipedal. The herbivors were lizard hipped. That gives some clue what had what. |
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| Fist of the North Shrimp | Nov 4 2012, 12:21 PM Post #20 |
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vá á orminum
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Theropods(not including birds) were not saurischians? And I am not saying that all dinosaur were looking like a funky parrot but they probaly all had some type of integument tha was probaly homologous with feathers, be it small folicles or bristles. And as I posted, there is a palaeontolist claiming to work on a feathered sauropod. I do not know what to think of it. |
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| theropod | Nov 4 2012, 07:30 PM Post #21 |
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palaeontology, open source and survival enthusiast
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actually that´s not true. ornithischians which are all herbovires have a birdlike pelvis, while most saurioschians, including most theropods and sauropods, have a "lizard hip". the birdlike pelvise only quite recently evolved analogous in maniraptorans. The herbivores being less birdlike is merely a matter of perspective. of course, if you ignore all the findings of filaments in them they might seem less birdlike, but if you consider the facts they are probably just as likely to have integument and non-avian dinosaurs alltogether where probably even more similar to aves than tought |
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| Godzillasaurus | Nov 5 2012, 12:15 AM Post #22 |
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Reptile King
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Correction: Theropods and sauropods were lizard hipped (not including birds of course). All of the other herbivorous dinosaurs were bird hipped. |
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| Tyrant | Nov 5 2012, 06:41 AM Post #23 |
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Omnivore
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Feathers actually are able to warm up and cool animals down. Unegalia or whatever his name was whipped my ass on this issue. Most theropods were feathered and many herbivorous dinosaurs could have been feathered get over it.
Your dinosaur/trex bashing is getting extremely irritating. Stay on topic and make contributions to the discussion or get the hell out. Edited by Tyrant, Nov 5 2012, 06:41 AM.
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| Jinfengopteryx | Nov 5 2012, 07:31 AM Post #24 |
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Aspiring paleontologist, science enthusiast and armchair speculative fiction/evolution writer
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Tyrant, don't take Kurtz seriously, when it comes to T-rex. |
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| Black Ice | Nov 5 2012, 07:42 AM Post #25 |
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Drom King
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Oh my bad, never got the memo on that
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| Godzillasaurus | Nov 5 2012, 08:25 AM Post #26 |
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Reptile King
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| theropod | Nov 7 2012, 11:54 PM Post #27 |
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palaeontology, open source and survival enthusiast
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| Admantus | Nov 8 2012, 07:38 AM Post #28 |
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Herbivore
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Again, that's just like saying that fur evolved seperately in carnivorians and aryctodactyls. |
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| SpinoInWonderland | Nov 8 2012, 02:32 PM Post #29 |
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The madness has come back...
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Ornithopods were not feathered... |
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| FelinePowah | Nov 8 2012, 06:36 PM Post #30 |
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Pussy Lover
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This looks far coolerThe this
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looks far cooler
9:43 AM Jul 11