Hmmm ... the oldest known fossil stromatolites are over 3 billion years old The Cambrian started about 550 million years ago. You just took a bite of 20 million years or so from nearly 3 billion years. Still leaves a lot of time in my book - almost 2.5 billion years, or rougly five times the time span from the start of the Cambrian to today. Hardly anything to use to triumphantly denounce evolutionary theory.
And while we are on the Cambrian, please explain why there are many major clastical families missing from its rocks. Amphibians. Reptiles. Fish did not appear until late in the Cambrian, which is rather inconvenient for claims that no evolution happened.
Hey! Were you looking over my shoulder?