Originally posted by Live4Jesus
here try this, I don't think I can psots a link because I haven't been here long enough... just add the http part to the front of this:
biocrs.biomed.brown.edu/Books/Chapters/Ch%2019/Fossil-Embryos/Time-Cambrian.html
I went to the website. Here is a quote: "But until about 600 million years ago, there were no organisms more complex than bacteria, multicelled algae and single-celled plankton."
Now, the article was written in 1995. Since you want us to go to the scientific literature, here is some of it since then:
5. RA Kerr, Pushing back the origin of animals, Science 279: 803-804, 6 Feb. 1998. The peer reviewed article is C-W Li, J-Y Chen, T-E Hua, Precambrian sponges with cellular structures. Science 279: 879-882. Got embryonic animal fossils that lived 40-50 million years before the Cambrian. Correlates with the molecular data and removes the Cambrian "explosion".
6. RA Kerr, Tracks of billion year old animals? Science 282: 19-20, Oct. 2, 1998. Primary article is A Selachner, PK Bose, F Pfluger, Triploblastic animals more than 1 billion years ago: trace fossil evidence from India. Science 282: 80-83, Oct. 2, 1998. Shows tracks of worms 200-500 million years before Cambrian.
7. S Jensen, JG Gehling, MI Droser, Ediacara-type fossils in Cambrian sediments. Nature 393: 567-569, June 11, 1998. Some ediacarans survived into the Cambrian period.
Notice that the ediacaran fossils were much more complex than "algae". It's a nice article, but even when published it was wrong. It's even more wrong now.
Here's some more scientific articles. Each show "complex" life prior to the Cambrian explosion.
1: Chen JY, Huang DY.
A possible Lower Cambrian chaetognath (arrow worm).
Science. 2002 Oct 4;298(5591):187.
2: Droser ML, Jensen S, Gehling JG.
Trace fossils and substrates of the terminal Proterozoic-Cambrian transition:
implications for the record of early bilaterians and sediment mixing.
Proc Natl Acad Sci U S A. 2002 Oct 1;99(20):12572-6.
3: Chen JY, Oliveri P, Gao F, Dornbos SQ, Li CW, Bottjer DJ, Davidson EH.
Precambrian animal life: probable developmental and adult cnidarian forms from
Southwest China.
Dev Biol. 2002 Aug 1;248(1):182-96.
4: Hausdorf B.
Early evolution of the bilateria.
Syst Biol. 2000 Mar;49(1):130-42.