New Ediacaran fossils (Introduction)

by BBella , Wednesday, February 23, 2011, 04:41 (4813 days ago) @ David Turell


> > > David, in a post awhile back (couldn't find it to verify) I'd asked what caused the jump in complexity and you said more oxygen. Seems to me I may have asked what caused more oxygen and you said more plants? 
> > 
> > I remember our conversation. And it is always the oxygen that is pointed to as a cause. But a lot more had to happen. Those Ediacaran pictures helped make my point. Look at how simple they are compaired to what appeared in the Cambrian.http://denisdutton.com/newsweek_coolingworld.pdf
> 
> A new entry in the Cambrian debate. Plancton caused the huge jump in oxygen in the atmosphere:
> 
> http://wattsupwiththat.com/ 2/22/11-I read this article and it seems to say that upheavals in the earths crust (volcanic activity/earthquakes?) is what created the increase in plankton that caused more oxygen. Does this then mean when we have earthquakes and volcanic activity now more oxygen is a by-product? We sure could use more O2!