It would be more appropriate to say that nearly all animal phyla were recorded in the fossil record during what has come to be called the Cambrian Explosion.
9 posted on 10/30/2009 8:59:13 AM PDT by GodGunsGuts
I did a little research on this for a previous post. It appears that saying most animal phyla appeared during the CE is an exaggeration, let alone saying nearly all.