IIRC, it's in the "Origin", I don't have the precise reference handy
...this discovery is major evidence against Darwin!
Huh? In what way? Sometimes you see anti-evolutionists attempt to use the "Cambrian explosion" as evidence against standard biology - now you're saying preCambrian life is!
Perhaps you should question these so-called facts once in a while. Even Gould had to admit that the fossil record shows no trend toward increased complexity. "Most structural complexity entered in a grand burst at the Cambrian explosion, and the history of Phanerozoic life since then has largely been a tale of endless variation upon a set of basic body plans...So was'nt Darwin's theory based upon a clear progression from simple to complex? Try and find your evidence that the Cambrian explosion was predicted by Darwin....it remains one of the evolutionists biggest problems ...alas until we're now able to study biochemistry and see so much disturbing complexity. LOL