The tree of life. Get a clue about it.
There were sexually reproducing animals 850 million years ago. They had nuclei, mitochondria, ribosomes, the whole bit.
Nobody knows the total variety of life before the presumed big freeze hit 700 mya. The fossil record is very scant and ambiguous. Your statements on the subject have been ill-informed--very ill-informed--ranting and no more.
A drawing is proof of nothing. Five year olds can draw. There is no tree of life. In fact, science shows us it looks more like a bush with many origins. That is what the Cambrian shows us and you and evolutionists can draw all the pretty pictures you like and it will not be any evidence against that incontrovertible fact.
And yes, we do know that there were photosynthetic bacteria long before the Cambrian and that if the world had been covered with ice as the dishonest SciAm article you linked to claims, they would have never survived as we know they did.
BTW - continuing to throw irrelevancies in the hope that one of them will stick shows very well your utter desperation and inability to refute my statement made some 160 posts ago.