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| Topic Started: Oct 12 2010, 08:08 PM (1,442 Views) | |
| Owl Streak | Oct 12 2010, 08:08 PM Post #1 |
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Newborn
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Lets say dinosaurs some how became dominant creatures AGAIN after they lived a long time ago what would happen? |
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| Kamidio | Oct 16 2010, 10:05 AM Post #16 |
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The Game Master of the SSU:NC
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Either Discovery Kids was lying to me or you are. |
SSU:NC - Finding a new home. Quotes WAA
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| Pando | Oct 16 2010, 12:46 PM Post #17 |
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Obey or I'll send you to the moon
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Yup, it was land crocodiles that kept the mammals small during the time that non-avian dinos ruled the land, then the worldwide rainforest was part of the reason mammals stayed small after it, except for a few large mammals that adapted to being a large ground herbivore in a rainforest. |
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| Carlos | Oct 16 2010, 01:35 PM Post #18 |
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Adveho in me Lucifero
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Pterosaur eggs seemed to have had extremely thin, calcium-less shells. Presumably, much like modern lizards, ovovipary could be developed. In addition, it is very likely pterosaurs were actually related to drepanosaurs, not derived archosaurs. @lamna: Yes, I do realise pterosaurs were not dinosaurs by any stretch of imagination. No, I will not shut up on how awesome they were. As pointed out above, crocodillians make also extremely good competitors against mammals. The only disandvantage seems to be obligatory ovipary, much like in birds; no known crocodillian had decent heat conserving integrument either, but that could easily be solved. |
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Lemuria: http://s1.zetaboards.com/Conceptual_Evolution/topic/5724950/ Terra Alternativa: http://s1.zetaboards.com/Conceptual_Evolution/forum/460637/ My Patreon: https://www.patreon.com/Carliro ![]() | |
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| Flisch | Oct 16 2010, 01:37 PM Post #19 |
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Superhuman
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... *facepalms* |
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| Kamidio | Oct 16 2010, 01:41 PM Post #20 |
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The Game Master of the SSU:NC
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So Discovery Kids and Ben Stiller by being the narrator lied to me? Bullcrap.
Edited by Kamidio, Oct 16 2010, 01:41 PM.
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SSU:NC - Finding a new home. Quotes WAA
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| Toad of Spades | Oct 16 2010, 11:00 PM Post #21 |
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Clorothod
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There is no real reason for them not to become quadrupedal again. Of course it would be difficult for them to evolve to walk on their hands again, but its not impossible for them to. Their arms and shoulders could adapt to carry weight and walk again. Once they do they can evolve into more flexible body plans based on their limbs. It doesn't have to start on the ground either. They could start out in the trees and cliffs using their arms as well as their legs similar to hoatzin chicks. Once they evolve their arms back into a use of locomotion that isn't based on flight, they could adapt their limbs further to able to bear weight. They could also evolve back their long tail for balance, though it wouldn't be flexible, instead becoming stiff and flexible at the base like dromaeosaur tails. Some lineages could leave the trees and become totally land based creatures. Once the environment turns in favor of reptiles/birds, they could evolve on a similar course to the early archosaurs. The scenario above isn't the only way birds could re-adapt into a flexible bodyplan again. Their are many ways they could evolve towards this kind of body plan and isn't impossible. Look at the early archosauriformes. If an intelligent species lived back then do you think any of them would have thought that it would be plausible that creatures like those could evolve into the early archosaurs, the very diverse crurotarsans, the pterosaurs, and the dinosaurs/birds. Evolution is random and life always finds solutions to problems. Also look at the archosaurs. They laid eggs, but that didn't stop them from flourishing once the environment turned in their favor. Once the environment turns in the favor of reptiles/birds the tables will certainly turn. Edited by Toad of Spades, Oct 16 2010, 11:02 PM.
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Sorry Link, I don't give credit. Come back when you're a little...MMMMMM...Richer. Bread is an animal and humans are %90 aluminum. | |
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| colddigger | Oct 17 2010, 02:25 AM Post #22 |
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Joke's over! Love, Parasky
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I thought one of the major issues for birds was that their skeletons were fused... |
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Oh Fine. Oh hi you! Why don't you go check out the finery that is SGP?? v Don't click v Spoiler: click to toggle | |
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| Carlos | Oct 17 2010, 05:14 AM Post #23 |
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Adveho in me Lucifero
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I'm honestly sick of saying many reasons of why quadrupedality in birds is for all purposes impossible. But even if it was, it would still take time, and for what? For lizards to take over while birds would still be shifting from pure bipedality to the ancestral pose? |
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Lemuria: http://s1.zetaboards.com/Conceptual_Evolution/topic/5724950/ Terra Alternativa: http://s1.zetaboards.com/Conceptual_Evolution/forum/460637/ My Patreon: https://www.patreon.com/Carliro ![]() | |
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| lamna | Oct 17 2010, 05:33 AM Post #24 |
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Might I remind you again this is about Dinosaurs taking over again, not crocodiles or pterosaurs or lizards or jellyfish or motorcycles. Dinosaurs. |
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Living Fossils Fósseis Vibos: Reserva Natural 34 MYH, 4 tonne dinosaur. [flash=500,450] Video Magic! [/flash] | |
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| Kamidio | Oct 17 2010, 11:20 AM Post #25 |
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The Game Master of the SSU:NC
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*pupils dialate into pinholes* CARDGAMES ON MOTORCYCLES!!!!!! |
SSU:NC - Finding a new home. Quotes WAA
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| Ook | Oct 17 2010, 11:25 AM Post #26 |
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not a Transhuman
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or flying pigs? |
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| Toad of Spades | Oct 17 2010, 12:22 PM Post #27 |
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Clorothod
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The body shift doesn't have to occur during a major climate change. It could happen when mammals are still dominant. When the climate shifts in favor of reptiles/birds, they would already be prepared. |
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Sorry Link, I don't give credit. Come back when you're a little...MMMMMM...Richer. Bread is an animal and humans are %90 aluminum. | |
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| colddigger | Oct 17 2010, 02:59 PM Post #28 |
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Joke's over! Love, Parasky
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I think what's being suggested here is not that birds have a change in their body structure and as a result become dominant but rather that a small group changes for a tiny little niche and then when a mass extinction happens that one group diversifies. Or something like that, if it's the hoatzin and using their front limbs to clamber around the trees (I would imagine that would still retain some flight or gliding or something, too good to lose ya know?) then I think that's... believable, or more believable that geese falling over and knuckle walking.
Yes. |
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Oh Fine. Oh hi you! Why don't you go check out the finery that is SGP?? v Don't click v Spoiler: click to toggle | |
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| Toad of Spades | Oct 17 2010, 04:25 PM Post #29 |
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Clorothod
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That's what I'm suggesting. I doubt that my version of quadrupedal arboreal birds will be common at first. After all, the first dinosaurs weren't common at first either. |
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Sorry Link, I don't give credit. Come back when you're a little...MMMMMM...Richer. Bread is an animal and humans are %90 aluminum. | |
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| Practically Uninformed | Oct 17 2010, 04:50 PM Post #30 |
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Informed enough to care
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So, JohnFaa, if I may ask, if pterosaurs and crocodiles were oh-so-better at everything than stinky birds and rats, why is one group dead and the other limited to about 10 species? |
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