SCIENCE and me expects you to prove full blown Darwinian Evolution, early life is your best (clear easy to see) shot at proving it
I don't have time to fully respond to your latest response, but I will say this. Why is this the best shot at proving that evolution happened and common ancestry? There is already an abundance of "clear easy to see" evidence that shows that evolution happened that come from different fields of scientific study that indepenedenly verify that evolutuion happened:
- Dna [pylogenetic analysis, psuedogenes, retroviruses, human chromosome 2, nearly universal genetic code, etc.]
- Embryology (human embryo's with tail bugs, dolphins with hindlimb buds)
- Biogeography (look into Marsipuls)
- Transitional forms in periods later than the pre-Cambrian (evolutionary prediction of where to find fish/amphibian transitional form resulting in the discovery of Tiakaaak)
- Vestiges and atavisms (Ostrich wings, human's with tails, whales with vestigial pelvis/hind-leg bones)
Evolution indeed has happened. It seems more like you are wanting to use the pre-cambrian/cambrian era not becuase it should be easy to see evolution, but precisely becuase it would be hard to see the common ancestry.
If what you are wanting to do is find evidence that would completly blow common ancestry out of the water in the pre-cambrian strata (since this is what you are focusing on) would be to find avian or mammilian fossils in that strata (i.e. something that common ancestry says is impossible to exisit at that time period).