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| New theory on Dinosaur Extinction | |
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| Topic Started: Oct 27 2009, 06:10 AM (1,362 Views) | |
| Paul_de_Vries | Nov 6 2009, 08:54 PM Post #31 |
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Newborn
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I dont think the human brain can really process or imagine with any degree of certainty whether an asteroid of a given size is enough to cause the KT event or not. I mean...if I remember correctly it would have been followed by several months of blackness... killing ALOT of the photosynthetic life. Is that or isn't it enough (along with the other effects of the asteroid) to cause the KT event? Its mind-boggling. But: are there any models or computer simulations or that can help us decide whether or not the Mexican asteroid could have could all the damage?
Edited by Paul_de_Vries, Nov 6 2009, 08:54 PM.
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| Holben | Nov 7 2009, 04:19 AM Post #32 |
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Rumbo a la Victoria
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I thought they had? |
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Time flows like a river. Which is to say, downhill. We can tell this because everything is going downhill rapidly. It would seem prudent to be somewhere else when we reach the sea. "It is the old wound my king. It has never healed." | |
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| Carlos | Nov 7 2009, 04:33 AM Post #33 |
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Adveho in me Lucifero
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There are models, and they pretty much indicate the world is screwed. However, I still can't figure out how many small, adaptable animals like notosuchians, enantiornithes and many mammals went extinct despiste their adaptability. Probably the KT event did involved two asteroids |
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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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| Holben | Nov 7 2009, 05:33 AM Post #34 |
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Rumbo a la Victoria
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Maybe.. or maybe it was just chance and location that meant some survived. |
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Time flows like a river. Which is to say, downhill. We can tell this because everything is going downhill rapidly. It would seem prudent to be somewhere else when we reach the sea. "It is the old wound my king. It has never healed." | |
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| Paul_de_Vries | Nov 7 2009, 08:26 PM Post #35 |
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Yeah... maybe because of chance/location a very small group of these animals survived, and despite the adaptability you are referring to, it was not able to adapt due to a lack of genetic variation; if you have no mutations to choose from, your potential to evolve is pretty much zero. This combined with fierce competition resulting from resources growing scarcer, might have done the trick. A competing group of animals with more genetic variation (because more survived...) might have been able to get the upperhand. |
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| Holben | Nov 8 2009, 07:13 AM Post #36 |
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Rumbo a la Victoria
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And mammals are very adaptable. So are birds, and that's why they (both groups) stole the Cenozoic. |
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Time flows like a river. Which is to say, downhill. We can tell this because everything is going downhill rapidly. It would seem prudent to be somewhere else when we reach the sea. "It is the old wound my king. It has never healed." | |
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| Kingpin | Nov 17 2009, 11:25 PM Post #37 |
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Prime Specimen
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I'm sticking with the 'drowned in their own dung' theory. But I agree. And asteriod is the most likely cause of a mass extinction. Maybe not 100% of all the deaths, but at least 85%. |
-Last Olympian, Rick Riordan.
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| Holben | Nov 18 2009, 10:28 AM Post #38 |
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You're underestimating the after-effects. |
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Time flows like a river. Which is to say, downhill. We can tell this because everything is going downhill rapidly. It would seem prudent to be somewhere else when we reach the sea. "It is the old wound my king. It has never healed." | |
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| lamna | Nov 18 2009, 11:03 AM Post #39 |
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No, despite what all African Evidence would show you both bears and Marsupials are alive and well. And you're face is underestimating the after-effects. Oh wait is the fighting over? Damn too slow again. Anyway about adaptable animals going extinct, it could just be rotten luck. At the end of the day chance still plays a part. And even adaptable animals go extinct when faced with something more adaptable. Just look at the Black Rat, Brown Rats are pushing them out. |
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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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| Holben | Nov 19 2009, 04:31 AM Post #40 |
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The survival of the fittest. |
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Time flows like a river. Which is to say, downhill. We can tell this because everything is going downhill rapidly. It would seem prudent to be somewhere else when we reach the sea. "It is the old wound my king. It has never healed." | |
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3:28 AM Jul 11