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The cambrian explosion
#33
RE: The cambrian explosion
(January 2, 2015 at 7:43 pm)Lemonvariable72 Wrote: Short answer: No
Long answer: Our understanding of evolution is vastly better then it was 150 years ago, and we now have enough of the fossil record to see something called punctuated equaliburium which shows that some organisms will keep the same form for a long time then change relatively quickly. This depends on both species and environment and we see a change in the environment in the Cambrian that opened up a lot of ecological niches, strongly encouraging evolutionary diversification. So no.

Lemon, thanks for this fact!

What proof do we have that the environment changed?

I run up against this stupid shit a lot, and if I can point to this fact, it will shut some people up at least for awhile.

(January 3, 2015 at 3:09 pm)Stimbo Wrote: The important factor is the emergence of free oxygen in the atmosphere, in the first great pollution event. Oxygen is basically rocket fuel for multicellular life.

Thanks Stimbo...should have read further
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Messages In This Thread
The cambrian explosion - by king krish - January 2, 2015 at 6:52 pm
RE: The cambrian explosion - by CapnAwesome - January 2, 2015 at 6:54 pm
RE: The cambrian explosion - by king krish - January 2, 2015 at 6:58 pm
RE: The cambrian explosion - by Alex K - January 2, 2015 at 6:58 pm
RE: The cambrian explosion - by king krish - January 2, 2015 at 7:04 pm
RE: The cambrian explosion - by Alex K - January 2, 2015 at 7:07 pm
RE: The cambrian explosion - by Jenny A - January 2, 2015 at 7:03 pm
RE: The cambrian explosion - by Jackalope - January 2, 2015 at 7:11 pm
RE: The cambrian explosion - by Alex K - January 2, 2015 at 7:15 pm
RE: The cambrian explosion - by Jenny A - January 2, 2015 at 7:18 pm
RE: The cambrian explosion - by JesusHChrist - January 8, 2015 at 11:28 am
RE: The cambrian explosion - by Lucanus - January 2, 2015 at 7:26 pm
RE: The cambrian explosion - by Mudhammam - January 2, 2015 at 7:31 pm
RE: The cambrian explosion - by Lemonvariable72 - January 2, 2015 at 7:43 pm
RE: The cambrian explosion - by polar bear - January 3, 2015 at 8:23 pm
RE: The cambrian explosion - by abaris - January 3, 2015 at 8:27 pm
RE: The cambrian explosion - by JuliaL - January 2, 2015 at 7:56 pm
RE: The cambrian explosion - by downbeatplumb - January 3, 2015 at 12:39 pm
RE: The cambrian explosion - by Anomalocaris - January 3, 2015 at 12:49 pm
RE: The cambrian explosion - by Cyberman - January 3, 2015 at 2:47 pm
RE: The cambrian explosion - by robvalue - January 3, 2015 at 1:09 pm
RE: The cambrian explosion - by The Grand Nudger - January 3, 2015 at 1:13 pm
RE: The cambrian explosion - by robvalue - January 3, 2015 at 1:14 pm
RE: The cambrian explosion - by The Grand Nudger - January 3, 2015 at 1:15 pm
RE: The cambrian explosion - by robvalue - January 3, 2015 at 1:17 pm
RE: The cambrian explosion - by The Grand Nudger - January 3, 2015 at 1:19 pm
RE: The cambrian explosion - by Whateverist - January 3, 2015 at 1:21 pm
RE: The cambrian explosion - by Gawdzilla - January 3, 2015 at 1:25 pm
RE: The cambrian explosion - by Esquilax - January 3, 2015 at 2:58 pm
RE: The cambrian explosion - by Cyberman - January 3, 2015 at 3:09 pm
RE: The cambrian explosion - by Thumpalumpacus - January 3, 2015 at 3:21 pm
RE: The cambrian explosion - by Gawdzilla - January 3, 2015 at 5:26 pm
RE: The cambrian explosion - by Cyberman - January 3, 2015 at 5:12 pm
RE: The cambrian explosion - by Thumpalumpacus - January 3, 2015 at 6:22 pm
RE: The cambrian explosion - by Cyberman - January 3, 2015 at 7:13 pm
RE: The cambrian explosion - by downbeatplumb - January 4, 2015 at 1:31 pm
RE: The cambrian explosion - by pocaracas - January 3, 2015 at 8:48 pm
RE: The cambrian explosion - by Jenny A - January 3, 2015 at 9:02 pm
RE: The cambrian explosion - by pocaracas - January 3, 2015 at 9:11 pm
RE: The cambrian explosion - by Minimalist - January 3, 2015 at 9:37 pm
RE: The cambrian explosion - by polar bear - January 4, 2015 at 12:58 pm
RE: The cambrian explosion - by abaris - January 4, 2015 at 1:00 pm
RE: The cambrian explosion - by Creed of Heresy - January 7, 2015 at 4:56 am
RE: The cambrian explosion - by pocaracas - January 7, 2015 at 5:24 am
RE: The cambrian explosion - by Mudhammam - January 7, 2015 at 5:20 am
RE: The cambrian explosion - by Alex K - January 7, 2015 at 5:29 am
RE: The cambrian explosion - by Mudhammam - January 7, 2015 at 6:27 am
RE: The cambrian explosion - by Hoopington - January 7, 2015 at 11:35 am
RE: The cambrian explosion - by Cyberman - January 7, 2015 at 5:02 pm
RE: The cambrian explosion - by Hoopington - January 8, 2015 at 10:34 am
RE: The cambrian explosion - by Angrboda - January 7, 2015 at 6:13 pm
RE: The cambrian explosion - by h4ym4n - January 7, 2015 at 12:41 pm
RE: The cambrian explosion - by Gawdzilla - January 8, 2015 at 11:54 am
RE: The cambrian explosion - by JesusHChrist - January 8, 2015 at 11:57 am
RE: The cambrian explosion - by popeyespappy - January 8, 2015 at 12:10 pm
RE: The cambrian explosion - by JesusHChrist - January 8, 2015 at 12:25 pm
RE: The cambrian explosion - by Creed of Heresy - January 8, 2015 at 4:17 am
RE: The cambrian explosion - by robvalue - January 8, 2015 at 4:38 am
RE: The cambrian explosion - by Creed of Heresy - January 8, 2015 at 4:40 am
RE: The cambrian explosion - by robvalue - January 8, 2015 at 11:29 am
RE: The cambrian explosion - by JesusHChrist - January 8, 2015 at 11:33 am
RE: The cambrian explosion - by FatAndFaithless - January 8, 2015 at 11:31 am
RE: The cambrian explosion - by robvalue - January 8, 2015 at 11:35 am
RE: The cambrian explosion - by JesusHChrist - January 8, 2015 at 11:47 am
RE: The cambrian explosion - by robvalue - January 8, 2015 at 11:50 am
RE: The cambrian explosion - by Cyberman - January 8, 2015 at 12:19 pm
RE: The cambrian explosion - by popeyespappy - January 8, 2015 at 12:37 pm
RE: The cambrian explosion - by JesusHChrist - January 8, 2015 at 12:58 pm
RE: The cambrian explosion - by Cyberman - January 8, 2015 at 1:38 pm
RE: The cambrian explosion - by Gawdzilla - October 31, 2015 at 3:24 pm
RE: The cambrian explosion - by Anomalocaris - October 31, 2015 at 3:27 pm
RE: The cambrian explosion - by drfuzzy - October 31, 2015 at 3:50 pm
RE: The cambrian explosion - by Gawdzilla - November 1, 2015 at 11:04 pm
RE: The cambrian explosion - by Esquilax - November 1, 2015 at 11:44 pm
RE: The cambrian explosion - by SteelCurtain - October 31, 2015 at 3:25 pm

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