What may be the oldest complete fossil on Earth paints a smelly but colorful picture of our microbial ancestors from nearly 3.5 billion years ago.
The fossil is the remains of what once was a purple-and-green slimy, smelly mat of single cell microbes that worked, lived and even communicated in what is a lot like a prehistoric microscopic society.
Nora Noffke of Old Dominion University in the US found the remnants of this life in sandstone rock in western Australia.
This is likely an ancestor of ours, researchers said.
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