Cambrian Explosion Caused by Carnivores Caused by Oxygen?

That's the explanation advanced by a team from Scripps in La Jolla, Harvard and Andhra University in India. This is different than the great oxygenation event, which occurred much earlier. The argument is that consistently high oxygen levels in the oceans (where basically, everything interesting still lived at that time) allowed the development of more and more diverse carnivore strategies and therefore body plans.