Oldest Animal: Fossilized While Hatching
An anonymous reader writes "Thousands of 600 million years old embryo microfossils have been found in China that may be among the first animals. It is a case of preserving the seemingly unpreserveable. The Precambrian coral-like animals seem to have spiral patterns that show some were preserved at the moment of hatching, according to the researchers: 'These organisms lived 600 million years ago -- before big animals. This would be the very first moment of animal evolution preserved in the fossil record.'"
If anything, the smaller a fossil is, the more likely it is to survive. And, with micromanipulators, we can slice anything open these days, down to individual cells.