Get "Up To Date" with the Ediacaran

Earth Logs, a favourite source of mine, in THIS ARTICLE has brought THIS WONDERFUL ARTICLE to my attention. It has, in reasonably clear fashion, all you need to know about life before the Cambrian. 

Was there a Cambrian Explosion of life - perhaps not. The article has lots of pictures and references to follow.

Organisms named Fractofusus cover the sea floor some 560 million years ago, in a reconstruction of fossils from Newfoundland, Canada. Credit: Dr Charlotte G. Kenchington