New findings in Australan minerals may be due to fossilised life from 4.1 billion years ago - 300 million years older than hte previous earliest date for life.
That's quite a genealogy for you, Ken.
http://economictimes.indiatimes.com/magazines/panache/hints-of-life-on-what-was-thought-to-be-desolate-early-earth/articleshow/49467914.cms